@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} } @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} } @article{EnningPfaff2017, author = {Enning, Manfred and Pfaff, Raphael}, title = {G{\"u}terwagen 4.0 - Der G{\"u}terwagen f{\"u}r das Internet der Dinge. Teil 1: Gesamtsystembetrachtung und grundlegendes Konzept}, series = {ETR - Eisenbahntechnische Rundschau}, volume = {66}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {1/2}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {12 -- 16}, year = {2017}, language = {de} } @article{Enning2017, author = {Enning, Manfred}, title = {Vom "K{\"o}nig der Landstraße" zur "Ameise 4.0"}, series = {ETR - Eisenbahntechnische Rundschau}, volume = {66}, journal = {ETR - Eisenbahntechnische Rundschau}, number = {1/2}, publisher = {DVV Media Group}, address = {Hamburg}, issn = {0013-2845}, pages = {3}, year = {2017}, abstract = {Auf Eisenbahn- und Logistikkonferenzen werden gelegentlich Videos von Blattschneiderameisen gezeigt, die effizient und selbstorganisiert große Mengen Material durch den Dschungel transportieren. Daran sollen wir uns ein Beispiel nehmen.}, language = {de} } @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} } @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} } @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{Pfaff2017, author = {Pfaff, Raphael}, title = {Apps f{\"u}r den G{\"u}terwagen? Wie der G{\"u}terwagen 4.0 die effiziente Integration der G{\"u}terbahn in ERTMS erm{\"o}glicht}, series = {Ingenieurspiegel}, journal = {Ingenieurspiegel}, number = {2}, pages = {1 -- 2}, year = {2017}, language = {de} } @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} } @article{Reichert2017, author = {Reichert, Walter}, title = {Berufseinstieg f{\"u}r Wirtschaftsingenieure - Bachelor oder Master?}, series = {Berufsstart}, journal = {Berufsstart}, year = {2017}, language = {de} } @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{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{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} } @article{KampkerSchleserTriebsetal.2018, author = {Kampker, Achim and Schleser, Markus and Triebs, Johannes and Berg, Alexander-Karl and Hansen, Jan Ole and Fiedler, Falko}, title = {Bauteilintegrierte Vorrichtungsfunktionen im Karosseriebau : Aktuelle Ergebnisse im Forschungsprojekt ProeK}, series = {ZWF Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, volume = {113}, journal = {ZWF Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, number = {11}, publisher = {De Gruyter}, address = {Berlin}, issn = {0947-0085}, doi = {10.3139/104.112012}, pages = {767 -- 770}, year = {2018}, abstract = {Das Forschungsprojekt Produktionseffizienz in der Kleinserie (ProeK) erarbeitet kosteng{\"u}nstige und effiziente L{\"o}sungsans{\"a}tze f{\"u}r Prozessketten im Zukunftsfeld der Elektromobilit{\"a}t. Das Teilprojekt Karosserie setzt diese Zielsetzung durch innovative und praxisorientierte Produkt- und Prozesskonzepte mit neuartigen bauteilintegrierten Vorrichtungsfunktionen (BiV) um. Im Teilprojekt Außenhaut sollen Toleranzen adaptiv durch Anpassungen der Prozessparameter sowie Bauteilmanipulation kompensiert werden.}, language = {de} } @article{BergSchleserDelidovichetal.2018, author = {Berg, Alexander-Karl and Schleser, Markus and Delidovich, Artem and Houben, Alexander}, title = {Ultraschallunterst{\"u}tzter Schmelzklebstoffauftrag}, series = {adh{\"a}sion KLEBEN \& DICHTEN}, volume = {Volume 62}, journal = {adh{\"a}sion KLEBEN \& DICHTEN}, number = {Issue 12}, publisher = {Springer}, doi = {10.1007/s35145-018-0089-z}, pages = {32 -- 37}, year = {2018}, language = {de} } @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} } @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} }