@article{Wollert2015, author = {Wollert, J{\"o}rg}, title = {IO-Link - f{\"u}r smarte Sensoren}, series = {elektroniknet.de}, journal = {elektroniknet.de}, year = {2015}, language = {de} } @article{Wollert2015, author = {Wollert, J{\"o}rg}, title = {Echtzeit-Ethernet : Protokoll-Reigen}, series = {elektroniknet.de}, journal = {elektroniknet.de}, year = {2015}, language = {de} } @article{Gebhardt2015, author = {Gebhardt, Andreas}, title = {3D-Druck ist {\"u}berall. Modische Accessoires, Kleidung, Medikamente, Nahrungsmittel, Autos, H{\"a}user, Waffen, B{\"u}sten, Musikinstrumente - alles geht}, series = {Kunststoffe}, volume = {105}, journal = {Kunststoffe}, number = {10}, publisher = {Hanser}, address = {M{\"u}nchen}, issn = {0023-5563}, pages = {62 -- 70}, year = {2015}, language = {de} } @inproceedings{KilicRaatschenAstanehAsletal.2015, author = {Kilic, S. A. and Raatschen, Hans-J{\"u}rgen and Astaneh-Asl, A. and Apaydin, N. M.}, title = {Finite element modeling of the Fatih Sultan Mehmet Suspension Bridge}, series = {Multi-Span Large Bridges - Proceedings of the International Conference on Multi-Span Large Bridges}, booktitle = {Multi-Span Large Bridges - Proceedings of the International Conference on Multi-Span Large Bridges}, publisher = {CRC Press}, address = {Leiden}, isbn = {9781138027572}, pages = {1169 -- 1173}, year = {2015}, language = {en} } @inproceedings{Wollert2016, author = {Wollert, J{\"o}rg}, title = {Industrie 4.0 - warten bis die Revolution vorbei ist?}, series = {Automatisierung im Fokus von Industrie 4.0 : Tagungsband AALE 2016 ; 13. Fachkonferenz, L{\"u}beck}, booktitle = {Automatisierung im Fokus von Industrie 4.0 : Tagungsband AALE 2016 ; 13. Fachkonferenz, L{\"u}beck}, publisher = {DIV Deutscher Industrieverlag GmbH}, address = {M{\"u}nchen}, isbn = {978-3-8356-7312-0}, pages = {127 -- 136}, year = {2016}, language = {de} } @inproceedings{KallweitSchleupenDahmannetal.2016, author = {Kallweit, Stephan and Schleupen, Josef and Dahmann, Peter and Bagheri, Mohsen and Engemann, Heiko}, title = {Entwicklung eines Kletterroboters zur Diagnose und Instandsetzung von Windenergieanlagen (SMART)}, series = {Automatisierung im Fokus von Industrie 4.0 : Tagungsband AALE 2016 ; 13. Fachkonferenz, L{\"u}beck}, booktitle = {Automatisierung im Fokus von Industrie 4.0 : Tagungsband AALE 2016 ; 13. Fachkonferenz, L{\"u}beck}, publisher = {DIV Deutscher Industrieverlag GmbH}, address = {M{\"u}nchen}, isbn = {978-3-8356-7312-0}, pages = {207 -- 212}, year = {2016}, language = {de} } @inproceedings{Wollert2015, author = {Wollert, J{\"o}rg}, title = {Wireless systems for machinery safety : Requirements and solutions for wireless real time systems}, series = {16th International Conference on Research and Education in Mechatronics (REM), 2015}, booktitle = {16th International Conference on Research and Education in Mechatronics (REM), 2015}, isbn = {978-3-945728-01-7}, doi = {10.1109/REM.2015.7380377}, pages = {88 -- 91}, year = {2015}, language = {en} } @inproceedings{NakagawaKallweitMichauxetal.2016, author = {Nakagawa, Masaki and Kallweit, Stephan and Michaux, Frank and Hojo, Teppei}, title = {Typical Velocity Fields and Vortical Structures around a Formula One Car, based on Experimental Investigations using Particle Image Velocimetry}, series = {SAE International Journal of Passenger Cars - Mechanical Systems}, booktitle = {SAE International Journal of Passenger Cars - Mechanical Systems}, issn = {1946-4002}, doi = {10.4271/2016-01-1611}, pages = {18 S.}, year = {2016}, language = {en} } @article{Wollert2016, author = {Wollert, J{\"o}rg}, title = {Rapid Application Development}, series = {Design \& Elektronik}, journal = {Design \& Elektronik}, number = {4}, publisher = {WEKA-Fachmedien}, address = {M{\"u}nchen}, issn = {0933-8667}, pages = {8 -- 11}, year = {2016}, abstract = {Das IoT ist ohne eingebettete Systeme undenkbar. Erst kleine und kleinste Mikrocontroller mit intelligenten Kommunikationsschnittstellen und Anbindung ans Internet erm{\"o}glichen sinnvolles und fl{\"a}chendeckendes Einsammeln von Daten. Doch wie kompliziert ist der Einstieg in die Embedded-Welt? Dieser Artikel gibt Einblick, wie die »Arduino-Plattform« die Einstiegsh{\"u}rden f{\"u}r eingebettete Systeme dramatisch reduzieren kann.}, language = {de} } @article{Wollert2016, author = {Wollert, J{\"o}rg}, title = {Industrial Internet of Things : Seifenblase oder Revolution}, series = {Elektronik}, journal = {Elektronik}, number = {7}, publisher = {WEKA-Fachmedien}, address = {M{\"u}nchen}, issn = {0013-5658}, pages = {39 -- 45}, year = {2016}, language = {de} } @book{GebhardtHoetter2016, author = {Gebhardt, Andreas and H{\"o}tter, Jan-Steffen}, title = {Additive manufacturing : 3D printing for prototyping and manufacturing}, publisher = {Hanser Publishers}, address = {Munich}, isbn = {978-1-56990-582-1 ; 978-1-56990-583-8}, pages = {591 S.}, year = {2016}, language = {en} } @article{HaagZontarSchleupenetal.2014, author = {Haag, S. and Zontar, D. and Schleupen, Josef and M{\"u}ller, T. and Brecher, C.}, title = {Chain of refined perception in self-optimizing assembly of micro-optical systems}, series = {Journal of sensors and sensor systems}, volume = {3}, journal = {Journal of sensors and sensor systems}, number = {1}, publisher = {Copernicus Publ.}, address = {G{\"o}ttingen}, issn = {2194-878X}, doi = {10.5194/jsss-3-87-2014}, pages = {87 -- 95}, year = {2014}, abstract = {Today, the assembly of laser systems requires a large share of manual operations due to its complexity regarding the optimal alignment of optics. Although the feasibility of automated alignment of laser optics has been shown in research labs, the development effort for the automation of assembly does not meet economic requirements - especially for low-volume laser production. This paper presents a model-based and sensor-integrated assembly execution approach for flexible assembly cells consisting of a macro-positioner covering a large workspace and a compact micromanipulator with camera attached to the positioner. In order to make full use of available models from computer-aided design (CAD) and optical simulation, sensor systems at different levels of accuracy are used for matching perceived information with model data. This approach is named "chain of refined perception", and it allows for automated planning of complex assembly tasks along all major phases of assembly such as collision-free path planning, part feeding, and active and passive alignment. The focus of the paper is put on the in-process image-based metrology and information extraction used for identifying and calibrating local coordinate systems as well as the exploitation of that information for a part feeding process for micro-optics. Results will be presented regarding the processes of automated calibration of the robot camera as well as the local coordinate systems of part feeding area and robot base.}, language = {en} } @article{RieperGebhardtStucker2016, author = {Rieper, Harald and Gebhardt, Andreas and Stucker, Brent}, title = {Selective Laser Melting of the Eutectic Silver-Copper Alloy Ag 28 wt \% Cu}, series = {RTejournal - Forum f{\"u}r Rapid Technologie}, volume = {13}, journal = {RTejournal - Forum f{\"u}r Rapid Technologie}, issn = {1614-0923}, url = {http://nbn-resolving.de/nbn:de:0009-2-44141}, year = {2016}, abstract = {The aim of this work was to perform a detailed investigation of the use of Selective Laser Melting (SLM) technology to process eutectic silver-copper alloy Ag 28 wt. \% Cu (also called AgCu28). The processing occurred with a Realizer SLM 50 desktop machine. The powder analysis (SEM-topography, EDX, particle distribution) was reported as well as the absorption rates for the near-infrared (NIR) spectrum. Microscope imaging showed the surface topography of the manufactured parts. Furthermore, microsections were conducted for the analysis of porosity. The Design of Experiments approach used the response surface method in order to model the statistical relationship between laser power, spot distance and pulse time.}, language = {en} } @book{Gebhardt2016, author = {Gebhardt, Andreas}, title = {Additive Fertigungsverfahren : Additive Manufacturing und 3D-Drucken f{\"u}r Prototyping - Tooling - Produktion}, edition = {5. aktualisierte und erweiterte Auflage}, publisher = {Hanser}, address = {M{\"u}nchen}, isbn = {978-3-446-44401-0 ; 978-3-446-44539-0}, doi = {10.3139/9783446445390}, pages = {XXIV, 711 S. : zahlr. Ill. u. graph. Darst.}, year = {2016}, language = {de} } @inproceedings{KesslerBalcGebhardt2016, author = {Kessler, Julia and Balc, Nicolae and Gebhardt, Andreas}, title = {Basic research on lattice structures focused on the strut shape and welding beads}, series = {Physics Procedia}, volume = {Vol. 83}, booktitle = {Physics Procedia}, issn = {1875-3884}, doi = {10.1016/j.phpro.2016.08.086}, pages = {833 -- 838}, year = {2016}, language = {en} } @inproceedings{BagheriSchleupenDahmannetal.2016, author = {Bagheri, Mohsen and Schleupen, Josef and Dahmann, Peter and Kallweit, Stephan}, title = {Kletternde Wartungsplattform f{\"u}r die wetterunabh{\"a}ngige Instandhaltung von Rotorbl{\"a}ttern an Windenergieanlagen - SMART}, series = {AKIDA 2016 Aachener Kolloquium f{\"u}r Instandhaltung, Diagnose und Anlagen{\"u}berwachung (AKIDA) am 15. und 16.11.2016, Technologiezentrum Aachen}, booktitle = {AKIDA 2016 Aachener Kolloquium f{\"u}r Instandhaltung, Diagnose und Anlagen{\"u}berwachung (AKIDA) am 15. und 16.11.2016, Technologiezentrum Aachen}, pages = {21 Folien}, year = {2016}, abstract = {In Deutschland liegt der Anteil der Windkraft an der Gesamtstromerzeugung bei 13,3\% mit mehr als 25.000 installierten Windenergieanlagen (WEA). Weltweit erf{\"a}hrt die Windbranche ein rasantes Wachstum. Indien und China berichten eine j{\"a}hrliche Wachstumsrate an Neuinstallationen von 45\%. Die Technologie zur Erzeugung elektrischer Energie aus Windkraft ist noch vergleichsweise jung. Durch die weltweit steigende Anzahl an Windenergieanlagen w{\"a}chst zunehmend der Bedarf an innovativen Wartungsl{\"o}sungen. Komponenten wie Generator oder Getriebe sind inzwischen weitestgehend ausgereift. Der Fokus richtet sich zunehmend auf die wesentliche Kernkomponente - die Rotorbl{\"a}tter. Industriekletterer inspizieren die Rotorbl{\"a}tter oder T{\"u}rme i.d.R. in einem zwei Jahres Rhythmus. Sie werden zunehmend durch Seilarbeitsb{\"u}hnen unterst{\"u}tzt. F{\"u}r gr{\"o}ßere Reparaturen kommen Kr{\"a}ne zum Einsatz, mit denen das Rotorblatt f{\"u}r die Instandhaltung demontiert wird. Die Standardinspektion besteht aus Sicht- und Klopfpr{\"u}fung der Rotorblattoberfl{\"a}che und ist nur bei sehr ruhiger Wetterlage durchf{\"u}hrbar. Seit September 2014 wird das Forschungsprojekt SMART (Scanning, Monitoring, Analysis, Repair and Transportation), Entwicklung einer Wartungsplattform f{\"u}r WEA, vom BMWi gef{\"o}rdert. Das Konsortium besteht aus zwei Firmen und der Fachhochschule Aachen. Die SMART-Anlage klettert reibschl{\"u}ssig am Turm der WEA mittels speziellen Kettenfahrwerken (Abbildung) auf- und abw{\"a}rts. Ein ringf{\"o}rmiges Spannsystems, basierend auf dem Konzept der „N{\"u}rnberger"-Schere, erzeugt die erforderliche Anpresskraft f{\"u}r den Kletterprozess. Wettergesch{\"u}tzte Arbeitskabinen erm{\"o}glichen die ganzj{\"a}hrige Instandhaltung von Rotorbl{\"a}ttern und ebenso T{\"u}rmen. Dadurch k{\"o}nnen Wartungsarbeiten auf 24 Stunden am Tag ausgeweitet werden. Der kombinierte Einsatz (Sensorfusion) bildgebender Messtechnik wie Thermografie, Ultraschall, und Terahertz in der Arbeitskabine kann die Dokumentation, Effizienz und Qualit{\"a}t der Instandhaltungsarbeiten erheblich verbessern. Langfristiges Ziel von SMART ist ein Condition Monitoring f{\"u}r Rotorbl{\"a}tter und T{\"u}rme auf Basis digitalisierter dreidimensionaler Volumenscans. Der kooperative Einsatz mit UAVs erweitert die Instandhaltungsstrategie. UAVs erm{\"o}glichen die schnelle, kosteng{\"u}nstige globale optische Inspektion von Rotorblattoberfl{\"a}chen zur Detektion potentieller Fehlstellen. Der „Proof-of-Concept" Meilenstein wurde mit der Demonstration eines funktionsf{\"a}higen Modells im Dezember 2015 erfolgreich abgeschlossen.}, language = {de} } @book{Feuerriegel2016, author = {Feuerriegel, Uwe}, title = {Verfahrenstechnik mit EXCEL: Verfahrenstechnische Berechnungen effektiv durchf{\"u}hren und professionell dokumentieren}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, isbn = {978-3-658-02902-9}, doi = {10.1007/978-3-658-02903-6}, pages = {XVII, 381 Seiten}, year = {2016}, language = {de} } @article{Wollert2018, author = {Wollert, J{\"o}rg}, title = {TSN - Schluss mit dem Feldbuskrieg?}, series = {Design \& Elektronik}, journal = {Design \& Elektronik}, number = {3}, publisher = {WEKA-Fachmedien}, address = {M{\"u}nchen}, issn = {0933-8667}, pages = {26 -- 31}, year = {2018}, language = {de} } @article{MichauxMatternKallweit2018, author = {Michaux, F. and Mattern, P. and Kallweit, Stephan}, title = {RoboPIV: how robotics enable PIV on a large industrial scale}, series = {Measurement Science and Technology}, volume = {29}, journal = {Measurement Science and Technology}, number = {7}, publisher = {IOP}, address = {Bristol}, issn = {1361-6501}, doi = {10.1088/1361-6501/aab5c1}, pages = {074009}, year = {2018}, abstract = {This work demonstrates how the interaction between particle image velocimetry (PIV) and robotics can massively increase measurement efficiency. The interdisciplinary approach is shown using the complex example of an automated, large scale, industrial environment: a typical automotive wind tunnel application. Both the high degree of flexibility in choosing the measurement region and the complete automation of stereo PIV measurements are presented. The setup consists of a combination of three robots, individually used as a 6D traversing unit for the laser illumination system as well as for each of the two cameras. Synchronised movements in the same reference frame are realised through a master-slave setup with a single interface to the user. By integrating the interface into the standard wind tunnel management system, a single measurement plane or a predefined sequence of several planes can be requested through a single trigger event, providing the resulting vector fields within minutes. In this paper, a brief overview on the demands of large scale industrial PIV and the existing solutions is given. Afterwards, the concept of RoboPIV is introduced as a new approach. In a first step, the usability of a selection of commercially available robot arms is analysed. The challenges of pose uncertainty and importance of absolute accuracy are demonstrated through comparative measurements, explaining the individual pros and cons of the analysed systems. Subsequently, the advantage of integrating RoboPIV directly into the existing wind tunnel management system is shown on basis of a typical measurement sequence. In a final step, a practical measurement procedure, including post-processing, is given by using real data and results. Ultimately, the benefits of high automation are demonstrated, leading to a drastic reduction in necessary measurement time compared to non-automated systems, thus massively increasing the efficiency of PIV measurements.}, language = {en} } @article{Wollert2018, author = {Wollert, J{\"o}rg}, title = {Echtzeit-Ethernet - Basis f{\"u}r Industrie 4.0}, series = {Design \& Elektronik}, journal = {Design \& Elektronik}, publisher = {WEKA-Fachmedien}, address = {M{\"u}nchen}, isbn = {0933-8667}, year = {2018}, language = {de} } @article{KunkelGebhardtMpofuetal.2018, author = {Kunkel, Maximilian Hugo and Gebhardt, Andreas and Mpofu, Khumbaulani and Kallweit, Stephan}, title = {Statistical assessment of mechanical properties of selective laser melted specimens of stainless steel}, series = {The International Journal of Advanced Manufacturing Technology}, volume = {98}, journal = {The International Journal of Advanced Manufacturing Technology}, number = {5-8}, publisher = {Springer}, address = {London}, issn = {0268-3768}, doi = {10.1007/s00170-018-2040-8}, pages = {1409 -- 1431}, year = {2018}, abstract = {The rail business is challenged by long product life cycles and a broad spectrum of assembly groups and single parts. When spare part obsolescence occurs, quick solutions are needed. A reproduction of obsolete parts is often connected to long waiting times and minimum lot quantities that need to be purchased and stored. Spare part storage is therefore challenged by growing stocks, bound capital and issues of part ageing. A possible solution could be a virtual storage of spare parts which will be 3D printed through additive manufacturing technologies in case of sudden demand. As mechanical properties of additive manufactured parts are neither guaranteed by machine manufacturers nor by service providers, the utilization of this relatively young technology is impeded and research is required to address these issues. This paper presents an examination of mechanical properties of specimens manufactured from stainless steel through the selective laser melting (SLM) process. The specimens were produced in multiple batches. This paper interrogates the question if the test results follow a normal distribution pattern and if mechanical property predictions can be made. The results will be put opposite existing threshold values provided as the industrial standard. Furthermore, probability predictions will be made in order to examine the potential of the SLM process to maintain state-of-the-art mechanical property requirements.}, language = {en} } @inproceedings{RieperGebhardtStucker2016, author = {Rieper, Harald and Gebhardt, Andreas and Stucker, Brent}, title = {Process parameters for Selective Laser Melting of AgCu7}, series = {DDMC, Fraunhofer Direct Digital Manufacturing Conference, 3}, booktitle = {DDMC, Fraunhofer Direct Digital Manufacturing Conference, 3}, publisher = {Fraunhofer-Verlag}, address = {Stuttgart}, isbn = {978-3-8396-1001-5}, pages = {171 -- 176}, year = {2016}, language = {en} } @article{WingensMayPfaff2019, author = {Wingens, Niklas and May, J{\"o}rg and Pfaff, Raphael}, title = {Betrieblich-technische Innovationsans{\"a}tze zur Bremsprobe nach einer Prozess{\"a}nderung}, series = {Eisenbahntechnische Rundschau : ETR ; Zeitschrift f{\"u}r die gesamte Eisenbahntechnik}, journal = {Eisenbahntechnische Rundschau : ETR ; Zeitschrift f{\"u}r die gesamte Eisenbahntechnik}, number = {5}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {5}, year = {2019}, language = {de} } @incollection{FranzenSteckenPfaffetal.2019, author = {Franzen, Julian and Stecken, Jannis and Pfaff, Raphael and Kuhlenk{\"o}tter, Bernd}, title = {Using the Digital Shadow for a Prescriptive Optimization of Maintenance and Operation : The Locomotive in the Context of the Cyber-Physical System}, series = {Advances in Production, Logistics and Traffic}, booktitle = {Advances in Production, Logistics and Traffic}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-13535-5}, doi = {10.1007/978-3-030-13535-5_19}, pages = {265 -- 276}, year = {2019}, abstract = {In competition with other modes of transport, rail freight transport is looking for solutions to become more attractive. Short-term success can be achieved through the data-driven optimization of operations and maintenance as well as the application of novel strategies such as prescriptive maintenance. After introducing the concept of prescriptive maintenance, this paper aims to prove that vehicle-focused applications of this approach indeed have the potential to increase attractiveness. However, even greater advantages can be activated if data from the horizontal network of the vehicle is available. Drawing on the state of the art in research and technology in the field of cyber-physical systems (CPS) as well as digital twins and shadows, our work serves to design a system of systems for the horizontal interconnection of a rail vehicle and to conceptualize a draft for a digital twin of a locomotive.}, language = {en} } @inproceedings{BraunChengLaietal.2019, author = {Braun, Sebastian and Cheng, Chi-Tsun and Lai, Chow Yin and Wollert, J{\"o}rg}, title = {Microservice Architecture for Automation - Realization by the example of a model-factory's manufacturing execution system}, series = {Proceedings of the 23rd World Multi-Conference on Systemics, Cybernetics and Informatics: WMSCI 2019}, booktitle = {Proceedings of the 23rd World Multi-Conference on Systemics, Cybernetics and Informatics: WMSCI 2019}, pages = {33 -- 37}, year = {2019}, language = {en} } @article{Thomas2019, author = {Thomas, Axel}, title = {Die Wiederbelebung der Mitarbeiterwohnungsidee bei kommunalen Unternehmen}, series = {VM Verwaltung und Management}, volume = {25}, journal = {VM Verwaltung und Management}, number = {6}, publisher = {Nomos-Verl.-Ges.}, address = {Baden-Baden}, issn = {0947-9856}, doi = {10.5771/0947-9856-2019-6-286}, pages = {286 -- 291}, year = {2019}, language = {de} } @article{WilbringEnning2019, author = {Wilbring, Daniela and Enning, Manfred}, title = {Stromversorgung auf G{\"u}terwagen - Aktuelle Bem{\"u}hungen zur Standardisierung}, series = {ETR - Eisenbahntechnische Rundschau}, volume = {68}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {11}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {64 -- 67}, year = {2019}, language = {de} } @inproceedings{LuftGebhardtBalc2019, author = {Luft, Angela and Gebhardt, Andreas and Balc, Nicolae}, title = {Challenges of additive manufacturing in production systems}, series = {Modern technologies in manufacturing (MTeM 2019)}, volume = {299}, booktitle = {Modern technologies in manufacturing (MTeM 2019)}, number = {Article 01003}, doi = {10.1051/matecconf/201929901003}, pages = {6 Seiten}, year = {2019}, language = {en} } @inproceedings{AbbasThurnKessleretal.2019, author = {Abbas, Karim and Thurn, Laura and Kessler, Julia and Eichler, Fabian}, title = {Basic research of the consideration of additive manufactured lattice structures under thermoand fluid dynamic loads}, series = {Modern technologies in manufacturing (MTeM 2019)}, volume = {299}, booktitle = {Modern technologies in manufacturing (MTeM 2019)}, number = {Article 01009}, doi = {10.1051/matecconf/201929901009}, pages = {8 Seiten}, year = {2019}, language = {en} } @inproceedings{EichlerSkupinThurnetal.2019, author = {Eichler, Fabian and Skupin, Marco and Thurn, Laura and Kasch, Susanne and Schmidt, Thomas}, title = {Operating limits for beam melting of glass materials}, series = {Modern Technologies in Manufacturing (MTeM 2019)}, volume = {299}, booktitle = {Modern Technologies in Manufacturing (MTeM 2019)}, number = {Article 01004}, doi = {10.1051/matecconf/201929901004}, pages = {8 Seiten}, year = {2019}, abstract = {Laser-based Additive Manufacturing (AM) processes for the use of metals out of the powder bed have been investigated profusely and are prevalent in industry. Although there is a broad field of application, Laser Powder Bed Fusion (LPBF), also known as Selective Laser Melting (SLM) of glass is not fully developed yet. The material properties of glass are significantly different from the investigated metallic material for LPBF so far. As such, the process cannot be transferred, and the parameter limits and the process sequence must be redefined for glass. Starting with the characterization of glass powders, a parameter field is initially confined to investigate the process parameter of different glass powder using LPBFprocess. A feasibility study is carried out to process borosilicate glass powder. The effects of process parameters on the dimensional accuracy of fabricated parts out of borosilicate and hints for the post-processing are analysed and presented in this paper.}, language = {en} } @book{GebhardtKesslerSchwarz2019, author = {Gebhardt, Andreas and Kessler, Julia and Schwarz, Alexander}, title = {Produktgestaltung f{\"u}r die additive Fertigung}, publisher = {Hanser}, address = {M{\"u}nchen}, isbn = {978-3-446-45285-5}, pages = {XVI, 266 Seiten : Illustrationen, Diagramme}, year = {2019}, language = {de} } @inproceedings{GerhardsSchleserOttenetal.2019, author = {Gerhards, Benjamin and Schleser, Markus and Otten,, Christian and Schwarz, Alexander and Gebhardt, Andreas}, title = {Innovative Laser Beam Joining Technology for Additive Manufactured Parts}, series = {Conference Proceedings 72nd IIW Annual Assembly and International Conference, 7-12 July 2019, Bratislava}, booktitle = {Conference Proceedings 72nd IIW Annual Assembly and International Conference, 7-12 July 2019, Bratislava}, pages = {1 -- 8}, year = {2019}, language = {en} } @inproceedings{GerhardsSchleserOtten2019, author = {Gerhards, Benjamin and Schleser, Markus and Otten, Christian}, title = {Advancements of mobile vacuum laser welding for industrial thick sheet applications}, series = {Conference Proceedings 72nd IIW Annual Assembly and International Conference, 7-12 July 2019, Bratislava}, booktitle = {Conference Proceedings 72nd IIW Annual Assembly and International Conference, 7-12 July 2019, Bratislava}, pages = {1 -- 8}, year = {2019}, language = {en} } @article{WollbrinkMasloZimmeretal.2020, author = {Wollbrink, Moritz and Maslo, Semir and Zimmer, Daniel and Abbas, Karim and Arntz, Kristian and Bergs, Thomas}, title = {Clamping and substrate plate system for continuous additive build-up and post-processing of metal parts}, series = {Procedia CIRP}, volume = {93}, journal = {Procedia CIRP}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {10.1016/j.procir.2020.04.015}, pages = {108 -- 113}, year = {2020}, abstract = {The manufacturing share of laser powder bed fusion (L-PBF) increases in industrial application, but still many process steps are manually operated. Additionally, it is not possible to achieve tight dimensional tolerances or low surfaces roughness. Hence, a process chain has to be set up to combine additive manufacturing (AM) with further machining technologies. To achieve a continuous workpiece flow as basis for further industrialization of L-PBF, the paper presents a novel substrate system and its application on L-PBF machines and post-processing. The substrate system consists of a zero-point clamping system and a matrix-like interface of contact pins to be substantially connected to the workpiece within the L-PBF process.}, language = {en} } @incollection{FateriGebhardt2020, author = {Fateri, Miranda and Gebhardt, Andreas}, title = {Introduction to Additive Manufacturing}, series = {3D Printing of Optical Components}, booktitle = {3D Printing of Optical Components}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-58960-8}, doi = {10.1007/978-3-030-58960-8_1}, pages = {1 -- 22}, year = {2020}, abstract = {Additive manufacturing (AM) works by creating objects layer by layer in a manner similar to a 2D printer with the "printed" layers stacked on top of each other. The layer-wise manufacturing nature of AM enables fabrication of freeform geometries which cannot be fabricated using conventional manufacturing methods as a one part. Depending on how each layer is created and bonded to the adjacent layers, different AM methods have been developed. In this chapter, the basic terms, common materials, and different methods of AM are described, and their potential applications are discussed.}, language = {en} } @inproceedings{ChavezBermudezWollert2019, author = {Chavez Bermudez, Victor Francisco and Wollert, J{\"o}rg}, title = {Gateway for Automation Controllers and Cloud based Voice Recognition Services}, series = {KommA, 10. Jahreskolloquium Kommunikation in der Automation}, booktitle = {KommA, 10. Jahreskolloquium Kommunikation in der Automation}, publisher = {Institut f{\"u}r Automation und Kommunikation}, address = {Magdeburg}, organization = {KommA, 2019, Jahreskolloquium Kommunikation in der Automation, 10., Lemgo, DE, 2019-11-20 - 2019-11-21}, isbn = {978-3-944722-85-6}, pages = {1 -- 8}, year = {2019}, language = {en} } @article{UlmerGroeningerBraunetal.2020, author = {Ulmer, Jessica and Gr{\"o}ninger, Marc and Braun, Sebastian and Wollert, J{\"o}rg}, title = {AR Arbeitspl{\"a}tze: F{\"u}r hochflexible und skalierbare Produktionsumgebungen}, series = {atp Magazin}, volume = {62}, journal = {atp Magazin}, number = {10}, publisher = {Vulkan-Verlag}, address = {Essen}, issn = {2364-3137}, doi = {10.17560/atp.v62i10.2495}, year = {2020}, abstract = {Trotz fortschreitender Automatisierung bleiben manuelle T{\"a}tigkeiten ein wichtiger Baustein der Fertigung kundenindividueller Produkte. Um die Mitarbeiter(innen) zu unterst{\"u}tzen und um eine effiziente Arbeit zu erm{\"o}glichen, werden zunehmend auf Augmented Reality (AR) basierende Systeme eingesetzt. Die vorgestellte Arbeit konzentriert sich auf die Entwicklung ganzheitlicher AR-Arbeitspl{\"a}tze f{\"u}r den Einsatz in kleinen und mittleren Unternehmen (KMU). Das entwickelte AR- Handarbeitskonzept beinhaltet eine Just-in-time-Darstellung der Arbeitsaufgaben auf Werkst{\"u}cken mit automatisierter Fertigungskontrolle. Als Reaktion auf kurze Produktlebenszyklen und hohe Produktvielfalten sind alle Komponenten auf maximale Flexibilit{\"a}t ausgelegt. Ein Umr{\"u}sten auf neue Produkte kann innerhalb von Minuten erfolgen.}, language = {de} } @incollection{GebhardtHoetter2019, author = {Gebhardt, Andreas and Hoetter, Jan-Steffen}, title = {Rapid Tooling}, series = {CIRP Encyclopedia of Production Engineering}, booktitle = {CIRP Encyclopedia of Production Engineering}, publisher = {Springer}, address = {Berlin, Heidelberg}, isbn = {978-3-662-53120-4}, doi = {10.1007/978-3-662-53120-4}, pages = {39 -- 52}, year = {2019}, language = {en} } @inproceedings{ChavezBermudezWollert2020, author = {Chavez Bermudez, Victor Francisco and Wollert, J{\"o}rg}, title = {Arduino based Framework for Rapid Application Development of a Generic IO-Link interface}, series = {Kommunikation und Bildverarbeitung in der Automation. Ausgew{\"a}hlte Beitr{\"a}ge der Jahreskolloquien KommA und BVAu 2018}, booktitle = {Kommunikation und Bildverarbeitung in der Automation. Ausgew{\"a}hlte Beitr{\"a}ge der Jahreskolloquien KommA und BVAu 2018}, publisher = {Springer Vieweg}, address = {Berlin}, isbn = {978-3-662-59895-5}, doi = {10.1007/978-3-662-59895-5_2}, pages = {21 -- 33}, year = {2020}, abstract = {The implementation of IO-Link in the automation industry has increased over the years. Its main advantage is it offers a digital point-to-point plugand-play interface for any type of device or application. This simplifies the communication between devices and increases productivity with its different features like self-parametrization and maintenance. However, its complete potential is not always used. The aim of this paper is to create an Arduino based framework for the development of generic IO-Link devices and increase its implementation for rapid prototyping. By generating the IO device description file (IODD) from a graphical user interface, and further customizable options for the device application, the end-user can intuitively develop generic IO-Link devices. The peculiarity of this framework relies on its simplicity and abstraction which allows to implement any sensor functionality and virtually connect any type of device to an IO-Link master. This work consists of the general overview of the framework, the technical background of its development and a proof of concept which demonstrates the workflow for its implementation.}, language = {en} } @article{KaschSchmidtJahnetal.2021, author = {Kasch, Susanne and Schmidt, Thomas and Jahn, Simon and Eichler, Fabian and Thurn, Laura and Bremen, Sebastian}, title = {L{\"o}sungsans{\"a}tze und Verfahrenskonzepte zum Laserstrahlschmelzen von Glas}, series = {Schweissen und Schneiden}, volume = {73}, journal = {Schweissen und Schneiden}, number = {Heft 1-2}, publisher = {DVS Verlag}, address = {D{\"u}sseldorf}, isbn = {0036-7184}, pages = {32 -- 39}, year = {2021}, language = {de} } @inproceedings{KaschSchmidtEichleretal.2020, author = {Kasch, Susanne and Schmidt, Thomas and Eichler, Fabian and Thurn, Laura and Jahn, Simon and Bremen, Sebastian}, title = {Solution approaches and process concepts for powder bed-based melting of glass}, series = {Industrializing Additive Manufacturing. Proceedings of AMPA2020}, booktitle = {Industrializing Additive Manufacturing. Proceedings of AMPA2020}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-54333-4 (Print)}, doi = {10.1007/978-3-030-54334-1_7}, pages = {82 -- 95}, year = {2020}, abstract = {In the study, the process chain of additive manufacturing by means of powder bed fusion will be presented based on the material glass. In order to reliably process components additively, new concepts with different solutions were developed and investigated. Compared to established metallic materials, the properties of glass materials differ significantly. Therefore, the process control was adapted to the material glass in the investigations. With extensive parameter studies based on various glass powders such as borosilicate glass and quartz glass, scientifically proven results on powder bed fusion of glass are presented. Based on the determination of the particle properties with different methods, extensive investigations are made regarding the melting behavior of glass by means of laser beams. Furthermore, the experimental setup was steadily expanded. In addition to the integration of coaxial temperature measurement and regulation, preheating of the building platform is of major importance. This offers the possibility to perform 3D printing at the transformation temperatures of the glass materials. To improve the component's properties, the influence of a subsequent heat treatment was also investigated. The experience gained was incorporated into a new experimental system, which allows a much better exploration of the 3D printing of glass. Currently, studies are being conducted to improve surface texture, building accuracy, and geometrical capabilities using three-dimensional specimen. The contribution shows the development of research in the field of 3D printing of glass, gives an insight into the machine and process engineering as well as an outlook on the possibilities and applications.}, language = {en} } @inproceedings{UlmerBraunChengetal.2020, author = {Ulmer, Jessica and Braun, Sebastian and Cheng, Chi-Tsun and Dowey, Steve and Wollert, J{\"o}rg}, title = {Simulation und Verifikation komplexer Handarbeitsprozesse durch die Kombination von Virtual Reality und Augmented Reality im Single-Piece-Workflow}, series = {Tagungsband: AALE 2020}, booktitle = {Tagungsband: AALE 2020}, isbn = {978-3-8007-5180-8}, pages = {4 Seiten}, year = {2020}, language = {de} } @book{Schmidt2019, author = {Schmidt, Bernd}, title = {Grundlagen der Elektrotechnik und Elektronik f{\"u}r Ingenieure der Schienenfahrzeugtechnik und anderer Fachrichtungen : neu mit neuem SI-System und weiteren Inhalten f{\"u}r Mechantroniker}, edition = {3. vollst{\"a}ndig {\"u}berarbeitete Auflage}, publisher = {B. Schmidt, Fachverlag f{\"u}r Elektro- und Informationstechnik}, address = {Bielefeld}, isbn = {978-3-944131-04-7}, pages = {XXVI, 270 Seiten : Illustrationen, Diagramme}, year = {2019}, language = {de} } @article{WollertBooke2016, author = {Wollert, J{\"o}rg and Booke, Andreas}, title = {IoT von der Stange}, series = {elektronik}, journal = {elektronik}, number = {21 (2016)}, publisher = {WEKA-Fachmedien}, address = {M{\"u}nchen}, pages = {30 -- 37}, year = {2016}, abstract = {Heute sollte am besten jedes Ger{\"a}t in die große Rechnerwolke eingebettet werden. Doch so einfach ist das nicht, denn Cloud ist viel mehr als nur das Internet der Dinge. Als Anwender muss man sich also fragen, welche Dienste man m{\"o}chte und welchem Anbieter man sein Vertrauen schenkt.}, language = {de} } @book{Schmidt2016, author = {Schmidt, Bernd}, title = {Grundlagen der Elektrotechnik und Elektronik f{\"u}r Ingenieure der Schienenfahrzeugtechnik und anderer Fachrichtungen}, edition = {1. Aufl.}, publisher = {B. Schmidt, Fachverlag f{\"u}r Elektro- und Informationstechnik}, address = {Bielefeld}, isbn = {978-3-944131-02-3}, pages = {XXIII, 255 Seiten : Illustrationen}, year = {2016}, language = {de} } @book{Schmidt2017, author = {Schmidt, Bernd}, title = {Grundlagen der Elektrotechnik und Elektronik f{\"u}r Ingenieure der Schienenfahrzeugtechnik und anderer Fachrichtungen : mit 12 Tabellen und 221 Abbildungen ; NEU mit Verst{\"a}ndnisaufgaben und L{\"o}sungsbeispielen}, edition = {2. vollst{\"a}ndig {\"u}berarbeitete Auflage}, publisher = {B. Schmidt, Fachverlag f{\"u}r Elektro- und Informationstechnik}, address = {Bielefeld}, isbn = {978-3-944131-03-0}, pages = {XXV, 307 Seiten : Illustrationen, Diagramme}, year = {2017}, language = {de} } @article{PfaffSchmidt2016, author = {Pfaff, Raphael and Schmidt, Bernd}, title = {Daten in der Cloud - und dann?}, series = {Deine Bahn}, journal = {Deine Bahn}, number = {6}, publisher = {Bahn-Fachverlag}, address = {Berlin}, issn = {0948-7263}, pages = {50 -- 55}, year = {2016}, abstract = {Schienenverkehrssysteme stehen in zunehmendem Wettbewerb, sowohl untereinander als auch mit anderen Verkehrstr{\"a}gern. Als wichtiger Aspekt zur Steigerung der Kosteneffizienz wird die Digitalisierung des Betriebs und der Fahrzeuge betrachtet. {\"U}ber eine Prognose der Ausfallwahrscheinlichkeit bzw. Restlebensdauer von Subsystemen k{\"o}nnen mittels Digitalisierung die Instandhaltungskosten gesenkt werden. Die geringen Fehlerraten im System Bahn machen die Nutzung besonderer Simulationstechniken notwendig. In diesem Beitrag wird gezeigt, wie sich die Subsystemverf{\"u}gbarkeit aus den beobachteten Fehlerraten der Teilfunktionen vorhersagen l{\"a}sst.}, language = {de} } @inproceedings{ThurnGebhardt2017, author = {Thurn, Laura and Gebhardt, Andreas}, title = {Arousing Enthusiasm for STEM: Teaching 3D Printing Technology}, series = {Conference Proceedings: New Perspectives in Science Education}, booktitle = {Conference Proceedings: New Perspectives in Science Education}, publisher = {liberiauniversitaria.it}, address = {Padua}, isbn = {978-88-6292-847-2}, pages = {87 -- 92}, year = {2017}, language = {en} } @article{PfaffEnning2017, author = {Pfaff, Raphael and Enning, Manfred}, title = {G{\"u}terwagen 4.0 - Der G{\"u}terwagen f{\"u}r das Internet der Dinge. Teil 2: Ausgew{\"a}hlte technische Aspekte und Prozesse}, series = {ETR - Eisenbahntechnische Rundschau}, volume = {66}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {5}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {74 -- 77}, year = {2017}, language = {de} } @article{ReisgenSchaeferWilmsetal.2017, author = {Reisgen, Uwe and Sch{\"a}fer, Johannes and Wilms, Konrad and Schleser, Markus}, title = {Aufmischungsarmes, dickschichtiges MSG-Auftragschweißen mit entkoppelter Zweidrahttechnik}, series = {Schweißen und Schneiden}, volume = {69}, journal = {Schweißen und Schneiden}, number = {12}, publisher = {DVS Verlag}, address = {D{\"u}sseldorf}, issn = {0036-7184}, pages = {838 -- 843}, year = {2017}, abstract = {F{\"u}r Auftragschweißaufgaben existiert eine Vielzahl an verfahrenstechnischen Prozessvarianten, die je nach Charakteristik und Anwendungsfall ausgew{\"a}hlt werden. Ein Nachteil der vorwiegend verwendeten Metall- Schutzgasschweißprozesse (MSG) f{\"u}r das Auftragschweißen ist durch die direkte Kopplung von Drahtvorschub zu Energieeintrag gegeben. Die vorgestellte Zweidraht-Prozessvariante kann durch die Ausbildung eines {\"u}bertragenen und eines nicht-{\"u}bertragenen Lichtbogens die elektrische Leistung beider Lichtb{\"o}gen variieren und damit einen direkten Einfluss auf die Prozessgr{\"o}ßen Abschmelzleistung und Aufschmelzgrad nehmen. Im Speziellen besteht {\"u}ber die Entkopplung von Drahtvorschub zu Schweißstromst{\"a}rke die M{\"o}glichkeit eines niederenergetischen Betriebs trotz hoher Drahtvorschubgeschwindigkeit. Damit lassen sich Aufschmelzgrade unter 2\% umsetzen und Abschmelzleistungen bis zu 15 kg/h realisieren.}, language = {de} } @inproceedings{KleineKallweitMichauxetal.2016, author = {Kleine, Harald and Kallweit, Stephan and Michaux, Frank and Havermann, Marc and Olivier, Herbert}, title = {PIV Measurement of Shock Wave Diffraction}, series = {18th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 2016, Lissabon}, booktitle = {18th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 2016, Lissabon}, pages = {1 -- 14}, year = {2016}, language = {en} } @inproceedings{SchleupenEngemannBagherietal.2016, author = {Schleupen, Josef and Engemann, Heiko and Bagheri, Mohsen and Kallweit, Stephan}, title = {The potential of SMART climbing robot combined with a weatherproof cabin for rotor blade maintenance}, series = {17th European Conference on Composite Materials - ECCM, Munich, Germany}, booktitle = {17th European Conference on Composite Materials - ECCM, Munich, Germany}, pages = {1 -- 8}, year = {2016}, language = {en} } @article{PfaffEnning2017, author = {Pfaff, Raphael and Enning, Manfred}, title = {Die nachhaltige Alternative zum autonomen Lastwagen}, series = {Deine Bahn}, journal = {Deine Bahn}, number = {10}, pages = {22 -- 26}, year = {2017}, language = {de} } @inproceedings{EnningFratscher2017, author = {Enning, Manfred and Fratscher, Ren{\´e}}, title = {Funk-Kommunikation f{\"u}r G{\"u}terwagen: Prinzipien und Anwendungsbeispiel}, series = {IRSA International Railway Symposium Aachen}, booktitle = {IRSA International Railway Symposium Aachen}, pages = {1 -- 16}, year = {2017}, language = {de} } @article{Reichert2017, author = {Reichert, Walter}, title = {Berufseinstieg f{\"u}r Wirtschaftsingenieure - Bachelor oder Master?}, series = {Berufsstart}, journal = {Berufsstart}, year = {2017}, language = {de} } @incollection{ChwallekGoelzerReichert2018, author = {Chwallek, Constanze and G{\"o}lzer, Kaan and Reichert, Walter}, title = {Faymonville - Wachstum als Komplexit{\"a}tstreiber}, series = {Fallstudienkompendium Hidden Champions - Innovationen f{\"u}r den Weltmarkt}, booktitle = {Fallstudienkompendium Hidden Champions - Innovationen f{\"u}r den Weltmarkt}, publisher = {Springer Gabler}, isbn = {978-3-658-17829-1}, doi = {10.1007/978-3-658-17829-1_18}, pages = {299 -- 312}, year = {2018}, abstract = {Die Fallstudie FAYMONVILLE besch{\"a}ftigt sich damit, wie es dem Familienunternehmen Faymonville aus Ostbelgien gelungen ist, sich zu einem der f{\"u}hrenden Hersteller in seiner Branche zu entwickeln. Die gezielte Identifizierung neuer M{\"a}rkte, die Fokussierung auf die relevanten Kundenbed{\"u}rfnisse und eine konsistente Produktpolitik mit einem abgestimmten Fertigungskonzept legen die Grundsteine f{\"u}r den Erfolg. Das vorliegende Fallbeispiel zeigt anschaulich, wie es gelingen kann, den prinzipiellen Widerspruch zwischen wirtschaftlicher und kundenindividueller Fertigung erfolgreich aufzul{\"o}sen.}, language = {de} } @inproceedings{ThurnBalcGebhardtetal.2017, author = {Thurn, Laura and Balc, Nicolae and Gebhardt, Andreas and Kessler, Julia}, title = {Education packed in technology to promote innovations: Teaching Additive Manufacturing based on a rolling Lab}, series = {Modern Technologies in Manufacturing (MTeM 2017 - AMaTUC)}, booktitle = {Modern Technologies in Manufacturing (MTeM 2017 - AMaTUC)}, issn = {2261-236X}, doi = {10.1051/matecconf/201713702013}, pages = {6 Seiten}, year = {2017}, language = {en} } @article{Wollert2017, author = {Wollert, J{\"o}rg}, title = {Echtzeit-Ethernet - Basis f{\"u}r Industrie 4.0}, series = {Design \& Elektronik}, journal = {Design \& Elektronik}, number = {12}, publisher = {WEKA-Fachmedien}, address = {Haar, M{\"u}nchen}, issn = {0933-8667}, pages = {38 -- 41}, year = {2017}, language = {de} } @article{KlockeRichertSube2018, author = {Klocke, Martina and Richert, Vera and Sube, Maike}, title = {Vier Jahre „Guter Studienstart im Ingenieurbereich": Entwicklung und Perspektiven des „Nullten Semesters" in Aachen}, series = {Zeitschrift f{\"u}r Beratung und Studium}, volume = {13}, journal = {Zeitschrift f{\"u}r Beratung und Studium}, number = {1}, publisher = {Universit{\"a}tsverlag Webler}, address = {Bielefeld}, issn = {1860-3068}, pages = {17 -- 22}, year = {2018}, abstract = {Bereits 2015 wurde in der Zeitschrift „Qualit{\"a}t in der Wissenschaft" (QiW) {\"u}ber das Kooperationsprojekt „Guter Studienstart im Ingenieurbereich", das Orientierungssemester von RWTH und FH Aachen, berichtet. In diesem Artikel legen wir den Schwerpunkt auf die Entwicklung des Projekts in den Jahren 2015 bis 2018 und geben eine R{\"u}ckschau sowie einen Ausblick auf die Entwicklungsperspektiven nach dem offiziellen Projektende.}, language = {de} } @article{BabilonWilbringTappertetal.2018, author = {Babilon, Katharina and Wilbring, Daniela and Tappert, Tim and Pfaff, Raphael and Enning, Manfred}, title = {Schienenfahrzeugtechnik hands on - FH Aachen IMechE Railway Challenge}, series = {Ingenieurspiegel}, journal = {Ingenieurspiegel}, number = {2}, publisher = {Public Verlag}, address = {Bingen}, issn = {1868-5919}, pages = {20 -- 22}, year = {2018}, language = {de} } @inproceedings{BueckingPfaffDirksmeier2018, author = {B{\"u}cking, Henrik and Pfaff, Raphael and Dirksmeier, Roger}, title = {Sensor positioning and thermal model for condition monitoring of pressure gas reservoirs in vehicles}, series = {Proceedings of the Fourth European Conference of the Prognostics and Health Management Society, Utrecht, Netherlands, 2018}, booktitle = {Proceedings of the Fourth European Conference of the Prognostics and Health Management Society, Utrecht, Netherlands, 2018}, pages = {5 Seiten}, year = {2018}, language = {en} } @inproceedings{GaoBabilonPfaffetal.2018, author = {Gao, H. and Babilon, Katharina and Pfaff, Raphael and Gan, F. and Reich, A.}, title = {Model of wheel-rail contact for sanding and adhesion enhancement}, series = {Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018}, booktitle = {Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018}, isbn = {978-946186963-0}, pages = {314 -- 321}, year = {2018}, language = {en} } @article{FranzenPindersPfaffetal.2018, author = {Franzen, Julius and Pinders, Erik and Pfaff, Raphael and Enning, Manfred}, title = {RailCrowd's virtual fleets: Make most of your asset data}, series = {Deine Bahn}, journal = {Deine Bahn}, number = {9}, publisher = {Bahn-Fachverlag}, address = {Berlin}, issn = {0948-7263}, pages = {11 -- 13}, year = {2018}, abstract = {For smaller railway operators or those with a diverse fleet, it can be difficult to collect sufficient data to improve maintenance programs. At the same time, new rules such as entity in charge of maintenance - ECM - regulations impose an additional workload by requiring a dedicated maintenance management system and specific reports. The RailCrowd platform sets out to facilitate compliance with ECM and similar regulations while at the same time pooling anonymised fleet data across operators to form virtual fleets, providing greater data insights.}, language = {en} } @inproceedings{Pfaff2018, author = {Pfaff, Raphael}, title = {Railway Challenge 2018 - Ein Wettbewerb f{\"u}r Parkbahn-Lokomotiven}, series = {Deine Bahn}, booktitle = {Deine Bahn}, issn = {0948-7263}, pages = {22 -- 24}, year = {2018}, language = {de} } @inproceedings{PfaffMelcherFranzen2018, author = {Pfaff, Raphael and Melcher, Karin and Franzen, Julian}, title = {Rare event simulation to optimise maintenance intervals of safety critical redundant subsystems}, series = {Proceedings of the European Conference of the PHM Society}, volume = {4}, booktitle = {Proceedings of the European Conference of the PHM Society}, number = {1}, pages = {1 -- 6}, year = {2018}, language = {en} } @article{ZieburaBremenSchleifenbaumetal.2018, author = {Ziebura, Dawid and Bremen, Sebastian and Schleifenbaum, Johannes Henrich and Gebhardt, Andreas}, title = {Machbarkeitsstudie zur Verarbeitung von nicht rostendem Stahl 1.4404 unter Verwendung einer Diodenlaser-basierten LPBF-Maschine mit kartesischem Achssystem}, series = {RTejournal - Forum f{\"u}r Rapid Technologie}, volume = {15}, journal = {RTejournal - Forum f{\"u}r Rapid Technologie}, issn = {1614-0923}, year = {2018}, language = {de} } @article{SchmidtEnningPfaff2018, author = {Schmidt, Bernd and Enning, Manfred and Pfaff, Raphael}, title = {G{\"u}terwagen 4.0 - Der G{\"u}terwagen f{\"u}r das Internet der Dinge Teil 3: Einf{\"u}hrungsszenarien f{\"u}r aktive, kommunikative G{\"u}terwagen}, series = {ETR - Eisenbahntechnische Rundschau}, volume = {67}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {5}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {60 -- 64}, year = {2018}, abstract = {Wenn durch innovative, automatisierte G{\"u}terwagen betriebswirtschaftliche Vorteile nutzbar gemacht werden sollen, muss die Migration auf das neue System in sinnvollen Teilschritten unter Ber{\"u}cksichtigung der organisationellen und betrieblichen Vereinbarkeit vorgenommen werden. Eine stufenweise Migration mit Nachr{\"u}stbarkeit und Kompatibilit{\"a}t kann die optimale Ausstattungsvariante f{\"u}r die unterschiedlichen Betriebsszenarien sowie eine Steigerung der Wirtschaftlichkeit des Gesamtsystems bieten.}, language = {de} } @article{Thomas2018, author = {Thomas, Axel}, title = {Technologiezentren in der Aachener Region - Retrospektiven und Perspektiven}, series = {VM Verwaltung und Management}, volume = {24}, journal = {VM Verwaltung und Management}, number = {3}, publisher = {Nomos}, address = {Baden-Baden}, issn = {0947-9856}, doi = {10.5771/0947-9856-2018-3-147}, pages = {147 -- 156}, year = {2018}, language = {de} } @article{Thomas2018, author = {Thomas, Axel}, title = {Zielerreichungen der Technologie- und Gr{\"u}nderzentren aus Sicht der kommunalen Finanzwirtschaft - dargestellt am Beispiel der Aachener Region}, series = {Der Gemeindehaushalt}, volume = {119}, journal = {Der Gemeindehaushalt}, number = {7}, publisher = {Kohlhammer}, address = {Stuttgart}, issn = {0340-3645}, pages = {149 -- 155}, year = {2018}, language = {de} } @inproceedings{WiesenEngemannLimpertetal.2018, author = {Wiesen, Patrick and Engemann, Heiko and Limpert, Nicolas and Kallweit, Stephan}, title = {Learning by Doing - Mobile Robotics in the FH Aachen ROS Summer School}, series = {European Robotics Forum 2018, TRROS18 Workshop}, booktitle = {European Robotics Forum 2018, TRROS18 Workshop}, pages = {47 -- 58}, year = {2018}, language = {en} } @inproceedings{ThurnGebhardt2018, author = {Thurn, Laura and Gebhardt, Andreas}, title = {Strategy of Education on Materials for Students}, series = {Conference Proceedings: „New Perspectives in Science Education"}, booktitle = {Conference Proceedings: „New Perspectives in Science Education"}, address = {Florence, Italy}, isbn = {978-88-6292-976-9}, pages = {156 -- 161}, year = {2018}, language = {en} } @incollection{KlockeKatz2017, author = {Klocke, Martina and Katz, Christiane}, title = {Heterogenit{\"a}t von MINT-Studierenden als Herausforderung}, series = {Tagungsband zum 3. Symposium zur Hochschullehre in den MINT-F{\"a}chern}, booktitle = {Tagungsband zum 3. Symposium zur Hochschullehre in den MINT-F{\"a}chern}, publisher = {Technische Hochschule N{\"u}rnberg Georg Simon Ohm}, address = {N{\"u}rnberg}, pages = {31 -- 36}, year = {2017}, language = {de} } @incollection{Klocke2018, author = {Klocke, Martina}, title = {Schulter an Schulter - Zusammenarbeit in einem differenzierten Hochschulsystem}, series = {Lehre und Lehrentwicklung an Fachhochschulen - Festschrift f{\"u}r Prof. Dr. med. W. Huhn}, booktitle = {Lehre und Lehrentwicklung an Fachhochschulen - Festschrift f{\"u}r Prof. Dr. med. W. Huhn}, publisher = {Waxmann}, address = {M{\"u}nster}, isbn = {978-3-8309-3782-1}, pages = {75 -- 80}, year = {2018}, language = {de} } @article{PancContiuBocanetetal.2019, author = {Panc, Nicolae and Contiu, Glad and Bocanet, Vlad and Thurn, Laura and Sabau, Emilia}, title = {The influence of cutting technology on surface wear hardness}, series = {Academic Journal of Manufacturing Engineering}, volume = {17}, journal = {Academic Journal of Manufacturing Engineering}, number = {3}, issn = {1583-7904}, pages = {205 -- 210}, year = {2019}, language = {en} } @inproceedings{WiesenSchleser2019, author = {Wiesen, Andreas and Schleser, Markus}, title = {Entwicklung einer Qualit{\"a}tssicherung f{\"u}r das Laserstrahlschweißen im Vakuum mittels Bildverarbeitung}, series = {Große Schweißtechnische Tagung}, booktitle = {Große Schweißtechnische Tagung}, publisher = {DVS-Media}, address = {D{\"u}sseldorf}, isbn = {978-3-96144-066-5}, pages = {1 -- 6}, year = {2019}, language = {de} } @inproceedings{OttenGerhardsSchleseretal.2019, author = {Otten, Christian and Gerhards, Benjamin and Schleser, Markus and Schwarz, A. and Gebhardt, Andreas}, title = {Innovative Laserschweißtechnologie f{\"u}r additiv gefertigte Bauteile}, series = {Große Schweißtechnische Tagung}, booktitle = {Große Schweißtechnische Tagung}, publisher = {DVS-Media}, address = {D{\"u}sseldorf}, isbn = {978-3-96144-066-5}, pages = {150 -- 157}, year = {2019}, language = {de} } @incollection{FiedlerHennMelcher2015, author = {Fiedler, Gerda and Henn, Gudrun and Melcher, Karin}, title = {ANPAK - Ein Anpassungskurs f{\"u}r Studienanf{\"a}nger in den Ingenieurwissenschaften}, series = {Qualifizierung von Studierenden im Student-Life-Cycle. Tagungsband zum Mosbacher Tag der Lehre am 23.10.2014 /}, booktitle = {Qualifizierung von Studierenden im Student-Life-Cycle. Tagungsband zum Mosbacher Tag der Lehre am 23.10.2014 /}, editor = {Morschheuser, Petra}, publisher = {Duale Hochschule Baden-W{\"u}rttemberg (DHBW)}, address = {Mosbach}, isbn = {978-3-943656-02-2}, pages = {90 -- 93}, year = {2015}, language = {de} } @article{WilbringEnningPfaffetal.2020, author = {Wilbring, Daniela and Enning, Manfred and Pfaff, Raphael and Schmidt, Bernd}, title = {Neue Perspektiven f{\"u}r die Bahn in der Produktions- und Distributionslogistik durch Prozessautomation}, series = {ETR - Eisenbahntechnische Rundschau}, volume = {69}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {3}, issn = {0013-2845}, pages = {15 -- 19}, year = {2020}, language = {de} } @article{CosmaKesslerGebhardtetal.2020, author = {Cosma, Cosmin and Kessler, Julia and Gebhardt, Andreas and Campbell, Ian and Balc, Nicolae}, title = {Improving the Mechanical Strength of Dental Applications and Lattice Structures SLM Processed}, series = {Materials}, volume = {13}, journal = {Materials}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {1996-1944}, doi = {10.3390/ma13040905}, pages = {1 -- 18}, year = {2020}, abstract = {To manufacture custom medical parts or scaffolds with reduced defects and high mechanical characteristics, new research on optimizing the selective laser melting (SLM) parameters are needed. In this work, a biocompatible powder, 316L stainless steel, is characterized to understand the particle size, distribution, shape and flowability. Examination revealed that the 316L particles are smooth, nearly spherical, their mean diameter is 39.09 μm and just 10\% of them hold a diameter less than 21.18 μm. SLM parameters under consideration include laser power up to 200 W, 250-1500 mm/s scanning speed, 80 μm hatch spacing, 35 μm layer thickness and a preheated platform. The effect of these on processability is evaluated. More than 100 samples are SLM-manufactured with different process parameters. The tensile results show that is possible to raise the ultimate tensile strength up to 840 MPa, adapting the SLM parameters for a stable processability, avoiding the technological defects caused by residual stress. Correlating with other recent studies on SLM technology, the tensile strength is 20\% improved. To validate the SLM parameters and conditions established, complex bioengineering applications such as dental bridges and macro-porous grafts are SLM-processed, demonstrating the potential to manufacture medical products with increased mechanical resistance made of 316L.}, language = {en} } @article{EngelnMuellges1982, author = {Engeln-M{\"u}llges, Gisela}, title = {Entartungsbedingungen f{\"u}r Gleitfl{\"a}chennomogramme und Nomographierbarkeitsbedingungen f{\"u}r Fluchtebenennomogramme}, series = {ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik}, volume = {62}, journal = {ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik}, number = {2}, issn = {1521-4001}, doi = {10.1002/zamm.19820620203}, pages = {77 -- 93}, year = {1982}, language = {de} } @misc{Nordmann2022, type = {Master Thesis}, author = {Nordmann, Alexander}, title = {Prozess{\"u}berwachung beim Werkzeugschleifen von WC-Co Hartmetallschaftfr{\"a}sern}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {xi, 54 Seiten}, year = {2022}, language = {de} } @masterthesis{Vu2022, type = {Bachelor Thesis}, author = {Vu, Tuan Dat}, title = {Objekterkennung und Schienenerkennung in der Schienenfahrzeugtechnik}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {72 Seiten}, year = {2022}, language = {de} } @inproceedings{UlmerBraunChengetal.2021, author = {Ulmer, Jessica and Braun, Sebastian and Cheng, Chi-Tsun and Dowey, Steve and Wollert, J{\"o}rg}, title = {Adapting augmented reality systems to the users' needs using gamification and error solving methods}, series = {Procedia CIRP - 54th CIRP CMS 2021 - Towards Digitalized Manufacturing 4.0}, volume = {104}, booktitle = {Procedia CIRP - 54th CIRP CMS 2021 - Towards Digitalized Manufacturing 4.0}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {10.1016/j.procir.2021.11.024}, pages = {140 -- 145}, year = {2021}, abstract = {Animations of virtual items in AR support systems are typically predefined and lack interactions with dynamic physical environments. AR applications rarely consider users' preferences and do not provide customized spontaneous support under unknown situations. This research focuses on developing adaptive, error-tolerant AR systems based on directed acyclic graphs and error resolving strategies. Using this approach, users will have more freedom of choice during AR supported work, which leads to more efficient workflows. Error correction methods based on CAD models and predefined process data create individual support possibilities. The framework is implemented in the Industry 4.0 model factory at FH Aachen.}, language = {en} } @inproceedings{PfeifferBalcGebhardt2021, author = {Pfeiffer, Johann and Balc, N. and Gebhardt, Andreas}, title = {Studie zur Untersuchung der Auswirkung von Fr{\"a}sbahnstrategien auf die Oberfl{\"a}chenqualit{\"a}t von mittels SLM gefertigten Metallteilen}, series = {Tagungsband 21. Nachwuchswissenschaftler*innenkonferenz}, booktitle = {Tagungsband 21. Nachwuchswissenschaftler*innenkonferenz}, publisher = {Verlag Ernst-Abbe-Hochschule Jena}, address = {Jena}, isbn = {978-3-932886-36-2}, pages = {99 -- 102}, year = {2021}, abstract = {F{\"u}r die Herstellung von metallischen Bauteilen wird in der heutigen Zeit eine Vielzahl von Verfahren auf dem Markt angeboten. Dabei stehen die additiven im Wettbewerb zu den konventionellen Verfahren. Die erreichbaren Oberfl{\"a}chenqualit{\"a}ten der additiven sind nicht mit denen spanender Verfahren vergleichbar. F{\"u}r diesen Beitrag wurde analysiert, ob sich ein mittels Selektivem Laserschmelzen (SLM) additiv hergestellter Edelstahl hinsichtlich seiner Oberfl{\"a}chenqualit{\"a}t nach der Zerspanung von einem umgeformten konventionell hergestellten Edelstahl gleicher Sorte unterscheidet.}, language = {de} } @book{Feuerriegel2021, author = {Feuerriegel, Uwe}, title = {W{\"a}rme{\"u}bertragung mit EXCEL und VBA: W{\"a}rmetechnische Berechnungen und Simulationen effektiv durchf{\"u}hren und professionell dokumentieren}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-35905-8}, doi = {10.1007/978-3-658-35906-5}, pages = {XX, 439 Seiten}, year = {2021}, abstract = {Dieses Lehrbuch vermittelt die Grundlagen der W{\"a}rme{\"u}bertragung sowie den Umgang mit EXCEL-VBA von der Erstellung von Makros bis zu benutzerdefinierten Funktionen. Es legt damit eine Basis f{\"u}r die schnelle und professionelle Durchf{\"u}hrung von Berechnungen und Simulationen. Die angeleitete Erstellung von Berechnungsmodulen mit EXCEL und VBA aus allen wichtigen Bereichen der W{\"a}rme{\"u}bertragung bildet den inhaltlichen Schwerpunkt. Dazu z{\"a}hlen die station{\"a}re W{\"a}rmeleitung und der station{\"a}re W{\"a}rmedurchgang, die instation{\"a}re W{\"a}rmeleitung, der W{\"a}rme{\"u}bergang bei freier und erzwungener Konvektion sowie die W{\"a}rmestrahlung und der W{\"a}rme{\"u}bergang beim Kondensieren und Sieden. Soweit sinnvoll und m{\"o}glich werden die Stoffwertekorrelationen und die Berechnungsvorschriften aus dem VDI-W{\"a}rmeatlas verwendet. F{\"u}r ausgew{\"a}hlte Anwendungen werden zudem komplexere Auslegungen und Simulationen von Prozessen der W{\"a}rme{\"u}bertragung sowie von W{\"a}rme{\"u}bertragern erstellt. Die Zielgruppen: Studierende in Bachelor- und Masterstudieng{\"a}ngen, Praktiker im Engineering}, language = {de} } @inproceedings{WeissHeslenfeldSaeweetal.2022, author = {Weiss, Christian and Heslenfeld, Jonas and Saewe, Jasmin Kathrin and Bremen, Sebastian and H{\"a}fner, Constantin Leon}, title = {Investigation on the influence of powder humidity in Laser Powder Bed Fusion (LPBF)}, series = {Procedia CIRP 12th CIRP Conference on Photonic Technologies [LANE 2022]}, volume = {111}, booktitle = {Procedia CIRP 12th CIRP Conference on Photonic Technologies [LANE 2022]}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {10.1016/j.procir.2022.08.102}, pages = {115 -- 120}, year = {2022}, abstract = {In the Laser Powder Bed Fusion (LPBF) process, parts are built out of metal powder material by exposure of a laser beam. During handling operations of the powder material, several influencing factors can affect the properties of the powder material and therefore directly influence the processability during manufacturing. Contamination by moisture due to handling operations is one of the most critical aspects of powder quality. In order to investigate the influences of powder humidity on LPBF processing, four materials (AlSi10Mg, Ti6Al4V, 316L and IN718) are chosen for this study. The powder material is artificially humidified, subsequently characterized, manufactured into cubic samples in a miniaturized process chamber and analyzed for their relative density. The results indicate that the processability and reproducibility of parts made of AlSi10Mg and Ti6Al4V are susceptible to humidity, while IN718 and 316L are barely influenced.}, language = {en} } @article{AbbasBalcBremenetal.2022, author = {Abbas, Karim and Balc, Nicolae and Bremen, Sebastian and Skupin, Marco}, title = {Crystallization and aging behavior of polyetheretherketone PEEK within rapid tooling and rubber molding}, series = {Journal of Manufacturing and Materials Processing}, volume = {6}, journal = {Journal of Manufacturing and Materials Processing}, number = {5}, publisher = {MDPI}, address = {Basel}, issn = {2504-4494}, doi = {10.3390/jmmp6050093}, pages = {1 -- 12}, year = {2022}, abstract = {In times of short product life cycles, additive manufacturing and rapid tooling are important methods to make tool development and manufacturing more efficient. High-performance polymers are the key to mold production for prototypes and small series. However, the high temperatures during vulcanization injection molding cause thermal aging and can impair service life. The extent to which the thermal stress over the entire process chain stresses the material and whether it leads to irreversible material aging is evaluated. To this end, a mold made of PEEK is fabricated using fused filament fabrication and examined for its potential application. The mold is heated to 200 ◦C, filled with rubber, and cured. A differential scanning calorimetry analysis of each process step illustrates the crystallization behavior and first indicates the material resistance. It shows distinct cold crystallization regions at a build chamber temperature of 90 ◦C. At an ambient temperature above Tg, crystallization of 30\% is achieved, and cold crystallization no longer occurs. Additional tensile tests show a decrease in tensile strength after ten days of thermal aging. The steady decrease in recrystallization temperature indicates degradation of the additives. However, the tensile tests reveal steady embrittlement of the material due to increasing crosslinking.}, language = {en} } @article{EngemannCoenenDawaretal.2021, author = {Engemann, Heiko and C{\"o}nen, Patrick and Dawar, Harshal and Du, Shengzhi and Kallweit, Stephan}, title = {A robot-assisted large-scale inspection of wind turbine blades in manufacturing using an autonomous mobile manipulator}, series = {Applied Sciences}, volume = {11}, journal = {Applied Sciences}, number = {19}, publisher = {MDPI}, address = {Basel}, issn = {2076-3417}, doi = {10.3390/app11199271}, pages = {1 -- 22}, year = {2021}, abstract = {Wind energy represents the dominant share of renewable energies. The rotor blades of a wind turbine are typically made from composite material, which withstands high forces during rotation. The huge dimensions of the rotor blades complicate the inspection processes in manufacturing. The automation of inspection processes has a great potential to increase the overall productivity and to create a consistent reliable database for each individual rotor blade. The focus of this paper is set on the process of rotor blade inspection automation by utilizing an autonomous mobile manipulator. The main innovations include a novel path planning strategy for zone-based navigation, which enables an intuitive right-hand or left-hand driving behavior in a shared human-robot workspace. In addition, we introduce a new method for surface orthogonal motion planning in connection with large-scale structures. An overall execution strategy controls the navigation and manipulation processes of the long-running inspection task. The implemented concepts are evaluated in simulation and applied in a real-use case including the tip of a rotor blade form.}, language = {en} } @masterthesis{Keller2022, type = {Bachelor Thesis}, author = {Keller, Simon Mark}, title = {Risikoanalyse einer bordautonomen Schienenfahrzeugortung mittels GNSS}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {57 Seiten}, year = {2022}, abstract = {Bei Schienenfahrzeugen, die mit dem Zugsicherungssystem ETCS betrieben sind, wird die Odometrie durch eine diskrete Ortung mittels physischen Balisen zur{\"u}ckgesetzt. Diese Arbeit befasst sich mit der Innovation von virtuellen Balisen. Virtuelle Balisen, k{\"o}nnen eingesetzt werden, um physische, im Gleisbett montierte Balisen zu ersetzen. Durch den Einsatz von virtuellen Balisen soll der Infrastrukturausbau von ETCS vorangetrieben werden, indem sie als virtuelle Komponente auf Schienenfahrzeugen eingesetzt werden. Im Rahmen dieser Arbeit wird die Fragestellung beantwortet, ob eine bordautonome Zugortung mittels virtuellen Balisen in einem ausgew{\"a}hlten Szenario mit einem akzeptablen Risiko verbunden ist? Das Szenario besteht aus einem Schienenfahrzeug, welches mit dem Zugsicherungssystem ETCS Level 2 auf einer eingleisigen Nebenstrecke betreiben wird. Hierzu werden zun{\"a}chst die Grundlagen von ETCS und der satellitenbasierten Ortung erl{\"a}utert. Des Weiteren werden die Grundlagen des CSM Prozesses und der expliziten Risikoabsch{\"a}tzung eingef{\"u}hrt. Aufbauend auf diesen Grundlagen wird der CSM Prozess angewandt und dabei eine Systemdefinition mit den Schnittstellen des Systems zur Umwelt erstellt. Mit der Hazop-Methode werden die Gef{\"a}hrdungen der Schnittstellen erfasst und beurteilt. Die sicherheitsrelevanten Gef{\"a}hrdungen werden in einer FMEA bewertet. In der folgenden Diskussion werden sicherheitsrelevante Gef{\"a}hrdungen nochmals betrachtet. Das Ergebnis der Arbeit ist, dass im ausgew{\"a}hlten Szenario, unter der Verwendung der CSM-Prozesse und der industriell anerkannten Methoden Hazop und FMEA, die Integration der Board-autonomen-Ortung mit einem akzeptablen Risiko verbunden ist.}, language = {de} } @inproceedings{FiedlerGottschlichMuellerMelcher2021, author = {Fiedler, Gerda and Gottschlich-M{\"u}ller, Birgit and Melcher, Karin}, title = {Online-Pr{\"u}fungen mit STACK Aufgaben}, series = {Tagungsband ASIM Workshop STS/GMMS/EDU 2021}, booktitle = {Tagungsband ASIM Workshop STS/GMMS/EDU 2021}, editor = {Liu-Henke, Xiaobo and Durak, Umut}, publisher = {ARGESIM Verlag}, address = {Wien}, isbn = {978-3-901608-69-8}, doi = {10.11128/arep.45}, pages = {173 -- 178}, year = {2021}, abstract = {Wir stellen hier exemplarisch STACK Aufgaben vor, die frei von der Problematik sind, welche sich durch diverse Kommunikationswege und (webbasierte) Computer Algebra Systeme (CAS) ergibt. Daher sind sie insbesondere f{\"u}r eine Open-Book Online Pr{\"u}fung geeignet, da eine faire Pr{\"u}fungssituation gew{\"a}hrleistet werden kann.}, language = {de} } @inproceedings{EvansBraunUlmeretal.2022, author = {Evans, Benjamin and Braun, Sebastian and Ulmer, Jessica and Wollert, J{\"o}rg}, title = {AAS implementations - current problems and solutions}, series = {20th International Conference on Mechatronics - Mechatronika (ME)}, booktitle = {20th International Conference on Mechatronics - Mechatronika (ME)}, publisher = {IEEE}, address = {New York, NY}, isbn = {978-1-6654-1040-3}, doi = {10.1109/ME54704.2022.9982933}, pages = {6 Seiten}, year = {2022}, abstract = {The fourth industrial revolution presents a multitude of challenges for industries, one of which being the increased flexibility required of manufacturing lines as a result of increased consumer demand for individualised products. One solution to tackle this challenge is the digital twin, more specifically the standardised model of a digital twin also known as the asset administration shell. The standardisation of an industry wide communications tool is a critical step in enabling inter-company operations. This paper discusses the current state of asset administration shells, the frameworks used to host them and their problems that need to be addressed. To tackle these issues, we propose an event-based server capable of drastically reducing response times between assets and asset administration shells and a multi-agent system used for the orchestration and deployment of the shells in the field.}, language = {en} } @book{GebhardtKesslerThurn2016, author = {Gebhardt, Andreas and Kessler, Julia and Thurn, Laura}, title = {3D-Drucken: Grundlagen und Anwendungen des additive manufacturing (AM)}, edition = {2., neu bearbeitete und erweiterte Auflage}, publisher = {Hanser}, address = {M{\"u}nchen}, isbn = {978-3-446-44672-4}, doi = {10.3139/9783446448452}, pages = {XVI, 218 Seiten}, year = {2016}, language = {de} } @article{KosterScheidweilerTieves2016, author = {Koster, Arie and Scheidweiler, Robert and Tieves, Martin}, title = {A flow based pruning scheme for enumerative equitable coloring algorithms}, series = {A flow based pruning scheme for enumerative equitable coloring algorithms}, journal = {A flow based pruning scheme for enumerative equitable coloring algorithms}, doi = {10.48550/arXiv.1607.08754}, pages = {1 -- 30}, year = {2016}, abstract = {An equitable graph coloring is a proper vertex coloring of a graph G where the sizes of the color classes differ by at most one. The equitable chromatic number is the smallest number k such that G admits such equitable k-coloring. We focus on enumerative algorithms for the computation of the equitable coloring number and propose a general scheme to derive pruning rules for them: We show how the extendability of a partial coloring into an equitable coloring can be modeled via network flows. Thus, we obtain pruning rules which can be checked via flow algorithms. Computational experiments show that the search tree of enumerative algorithms can be significantly reduced in size by these rules and, in most instances, such naive approach even yields a faster algorithm. Moreover, the stability, i.e., the number of solved instances within a given time limit, is greatly improved. Since the execution of flow algorithms at each node of a search tree is time consuming, we derive arithmetic pruning rules (generalized Hall-conditions) from the network model. Adding these rules to an enumerative algorithm yields an even larger runtime improvement.}, language = {en} } @article{BeckenbachScheidweiler2016, author = {Beckenbach, Isabel and Scheidweiler, Robert}, title = {Perfect ƒ-Matchings and ƒ-Factors in Hypergraphs - A Combinatorial Approach}, series = {Discrete Mathematics}, volume = {240}, journal = {Discrete Mathematics}, number = {10}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2192-7782}, doi = {10.1016/j.disc.2017.05.005}, pages = {2499 -- 2506}, year = {2016}, abstract = {We prove characterizations of the existence of perfect ƒ-matchings in uniform mengerian and perfect hypergraphs. Moreover, we investigate the ƒ-factor problem in balanced hypergraphs. For uniform balanced hypergraphs we prove two existence theorems with purely combinatorial arguments, whereas for non-uniform balanced hypergraphs we show that the ƒ-factor problem is NP-hard.}, language = {en} } @article{ScheidweilerTriesch2016, author = {Scheidweiler, Robert and Triesch, Eberhard}, title = {A note on the duality between matchings and vertex covers in balanced hypergraphs}, series = {Journal of Combinatorial Optimization}, volume = {32}, journal = {Journal of Combinatorial Optimization}, number = {2}, publisher = {Springer}, address = {Berlin}, issn = {1573-2886}, doi = {10.1007/s10878-015-9887-5}, pages = {639 -- 644}, year = {2016}, abstract = {We present a new Min-Max theorem for an optimization problem closely connected to matchings and vertex covers in balanced hypergraphs. The result generalizes Kőnig's Theorem (Berge and Las Vergnas in Ann N Y Acad Sci 175:32-40, 1970; Fulkerson et al. in Math Progr Study 1:120-132, 1974) and Hall's Theorem (Conforti et al. in Combinatorica 16:325-329, 1996) for balanced hypergraphs.}, language = {en} } @article{KilicRaatschenKoerfgenetal.2017, author = {Kilic, S. A. and Raatschen, Hans-J{\"u}rgen and K{\"o}rfgen, B. and Apaydin, N. M. and Astaneh-Asl, A.}, title = {FE Model of the Fatih Sultan Mehmet Suspension Bridge Using Thin Shell Finite Elements}, series = {Arabian Journal for Science and Engineering}, volume = {42}, journal = {Arabian Journal for Science and Engineering}, number = {3}, publisher = {Springer Nature}, issn = {2191-4281}, doi = {10.1007/s13369-016-2316-y}, pages = {1103 -- 1116}, year = {2017}, abstract = {This paper presents the results of an eigenvalue analysis of the Fatih Sultan Mehmet Bridge. A high-resolution finite element model was created directly from the available design documents. All physical properties of the structural components were included in detail, so no calibration to the measured data was necessary. The deck and towers were modeled with shell elements. A nonlinear static analysis was performed before the eigenvalue calculation. The calculated natural frequencies and corresponding mode shapes showed good agreement with the available measured ambient vibration data. The calculation of the effective modal mass showed that nine modes had single contributions higher than 5 \% of the total mass. They were in a frequency range up to 1.2 Hz. The comparison of the results for the torsional modes especially demonstrated the advantage of using thin shell finite elements over the beam modeling approach.}, language = {en} } @inproceedings{EngemannWiesenKallweitetal.2018, author = {Engemann, Heiko and Wiesen, Patrick and Kallweit, Stephan and Deshpande, Harshavardhan and Schleupen, Josef}, title = {Autonomous mobile manipulation using ROS}, series = {Advances in Service and Industrial Robotics}, booktitle = {Advances in Service and Industrial Robotics}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-61276-8}, doi = {10.1007/978-3-319-61276-8_43}, pages = {389 -- 401}, year = {2018}, language = {en} } @article{Pfaff2017, author = {Pfaff, Raphael}, title = {Einsatz von offenen Onlinekursen in der Eisenbahnlehre}, series = {Deine Bahn}, journal = {Deine Bahn}, number = {1}, publisher = {Bahn-Fachverlag}, address = {Berlin}, issn = {0948-7263}, pages = {12 -- 16}, year = {2017}, abstract = {Eigene positive Erfahrungen mit Onlinekursen sowie die geringen Studierendenzahlen in der Pr{\"a}senzlehre gaben den Anstoß zu einem Experiment mit einem offenen Onlinekurs auf der Plattform Udemy. Die Erfahrungen sowohl bei der Erstellung und als auch im Lehrbetrieb waren positiv und f{\"u}hrten zu einer neuen Besch{\"a}ftigung mit Inhalten und Lernenden, getrieben durch die Anforderungen der Lernplattform.}, language = {de} } @inproceedings{MoshiriKahakPfaffGaebeletal.2017, author = {Moshiri-Kahak, Amir and Pfaff, Raphael and G{\"a}bel, Markus and Reich, Alexander}, title = {Modellierung der Adh{\"a}sionsfl{\"a}che im Rad-Schiene-Kontakt unter Einsatz von reibwertverbessernden Mitteln}, series = {15. Internationale Schienenfahrzeugtagung Rad Schiene 2017, Dresden, M{\"a}rz 2017}, booktitle = {15. Internationale Schienenfahrzeugtagung Rad Schiene 2017, Dresden, M{\"a}rz 2017}, pages = {3 Seiten}, year = {2017}, language = {de} } @inproceedings{PfaffSchmidtEnning2017, author = {Pfaff, Raphael and Schmidt, B. D. and Enning, Manfred}, title = {Towards inclusion of the freight rail system in the industrial internet of things - Wagon 4.0}, series = {Stephenson Conference, London, March 2017}, booktitle = {Stephenson Conference, London, March 2017}, pages = {1 -- 10}, year = {2017}, language = {en} }