@article{HeinrichsWeck1981, author = {Heinrichs, Horst and Weck, H.}, title = {Efficient finite-element structural analysis by interactive graphic mesh generation}, series = {CIRP Annals. 30 (1981), H. 1}, journal = {CIRP Annals. 30 (1981), H. 1}, pages = {279 -- 284}, year = {1981}, language = {en} } @article{HaselgruberMautnerThiele2010, author = {Haselgruber, Nikolaus and Mautner, Karin and Thiele, Jan}, title = {Usage Space Analysis for Reliability Testing}, series = {Quality and Reliability Engineering International}, volume = {26}, journal = {Quality and Reliability Engineering International}, number = {8}, publisher = {Wiley}, address = {New York}, issn = {1099-1638}, doi = {10.1002/qre.1155}, pages = {877 -- 885}, year = {2010}, abstract = {During the development process of a complex technical product, one widely used and important technique is accelerated testing where the applied stress on a component is chosen to exceed the reference stress, i.e. the stress encountered in field operation, in order to reduce the time to failure. For that, the reference stress has to be known. Since a complex technical product may fail regarding numerous failure modes, stress in general is highly dimensional rather than scalar. In addition, customers use their products individually, i.e. field operation should be described by a distribution rather than by one scalar stress value. In this paper, a way to span the customer usage space is shown. It allows the identification of worst case reference stress profiles in significantly reduced dimensions with minimal loss of information. The application example shows that even for a complex product like a combustion engine, stress information can be compressed significantly. With low measurement effort it turned out that only three reference stress cycles were sufficient to cover a broad range of customer stress variety.}, language = {en} } @article{HanrathPlesken1985, author = {Hanrath, Wilhelm and Plesken, Wilhelm}, title = {Group rings and irreducible representations of space groups / by W. Hanrath and W. Plesken}, series = {Journal f{\"u}r die reine und angewandte Mathematik. 362 (1985)}, journal = {Journal f{\"u}r die reine und angewandte Mathematik. 362 (1985)}, isbn = {0075-4102}, pages = {130 -- 140}, year = {1985}, language = {en} } @article{HanrathPlesken1984, author = {Hanrath, Wilhelm and Plesken, Wilhelm}, title = {The lattices of six-dimensional euclidean space}, series = {Mathematics of computation. 43 (1984), H. 168}, journal = {Mathematics of computation. 43 (1984), H. 168}, isbn = {0025-5718}, pages = {573 -- 587}, year = {1984}, language = {en} } @article{Hanrath1989, author = {Hanrath, Wilhelm}, title = {Character tables of some factor groups of space groups}, series = {Perfect groups / Derek F. Holt and W. Plesken}, journal = {Perfect groups / Derek F. Holt and W. Plesken}, publisher = {Clarendon Press}, address = {Oxford}, isbn = {0-19-853559-7}, pages = {357 -- 359}, year = {1989}, 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{Grundmann1992, author = {Grundmann, Reinhard}, title = {Design Criteria for Aeroacoustic Wind Tunnels}, year = {1992}, language = {en} } @article{GlowaniaGriesSchoeneetal.2011, author = {Glowania, Michael and Gries, Thomas and Schoene, Jens and Schleser, Markus and Reisgen, Uwe}, title = {Innovative coating technology for textile reinforcements of concrete applications}, series = {13th International Congress on Polymers in Concrete : 10 - 12 February 2010, Funchal, Madeira, Portugal.(Key engineering materials. Vol. 466)}, journal = {13th International Congress on Polymers in Concrete : 10 - 12 February 2010, Funchal, Madeira, Portugal.(Key engineering materials. Vol. 466)}, publisher = {Trans Tech Publications}, address = {B{\"a}ch}, organization = {International Congress Polymers in Concrete <13, 2010, Funchal, Madeira>}, isbn = {978-3-03785-008-4}, issn = {1013-9826 (E-Journal) ; 0252-1059 (Print)}, pages = {167 -- 173}, year = {2011}, language = {en} } @article{GebhardtSchmidtHoetteretal.2010, author = {Gebhardt, Andreas and Schmidt, Frank-Michael and H{\"o}tter, Jan-Steffen and Sokalla, Wolfgang and Sokalla, Patrick}, title = {Additive Manufacturing by selective laser melting the realizer desktop machine and its application for the dental industry}, series = {Physics Procedia}, volume = {5}, journal = {Physics Procedia}, number = {2}, isbn = {1875-3892}, pages = {543 -- 549}, year = {2010}, language = {en} } @article{GebhardtSchmidt2002, author = {Gebhardt, Andreas and Schmidt, Frank-Michael}, title = {Practical experiences with making and finishing of coloured models using 3D printing}, year = {2002}, language = {en} } @article{GebhardtFateri2013, author = {Gebhardt, Andreas and Fateri, Miranda}, title = {3D printing and its applications}, series = {RTejournal - Forum f{\"u}r Rapid Technologie}, volume = {10}, journal = {RTejournal - Forum f{\"u}r Rapid Technologie}, number = {1}, publisher = {Fachhochschule Aachen}, address = {Aachen}, issn = {1614-0923}, url = {http://nbn-resolving.de/urn:nbn:de:0009-2-35626}, year = {2013}, abstract = {Eine zunehmende Anzahl von Artikeln in Publikumszeitschriften und Journalen r{\"u}ckt die direkte Herstellung von Bauteilen und Figuren immer mehr in das Bewusstsein einer breiten {\"O}ffentlichkeit. Leider ergibt sich nur selten ein einigermaßen vollst{\"a}ndiges Bild davon, wie und in welchen Lebensbereichen diese Techniken unseren Alltag ver{\"a}ndern werden. Das liegt auch daran, dass die meisten Artikel sehr technisch gepr{\"a}gt sind und sich nur punktuell auf Beispiele st{\"u}tzen. Dieser Beitrag geht von den Bed{\"u}rfnissen der Menschen aus, wie sie z.B. in der Maslow'schen Bed{\"u}rfnispyramide strukturiert dargestellt sind und unterstreicht dadurch, dass 3D Printing (oder Additive Manufacturing resp. Rapid Prototyping) bereits alle Lebensbereiche erfasst hat und im Begriff ist, viele davon zu revolutionieren.}, language = {en} } @article{Gebhardt2001, author = {Gebhardt, Andreas}, title = {Rapid Prototyping and PIV}, year = {2001}, language = {en} } @article{Gebhardt2001, author = {Gebhardt, Andreas}, title = {Laserwelding with fillerwire}, series = {LIA handbook of laser material processing / Laser Institute of America}, journal = {LIA handbook of laser material processing / Laser Institute of America}, address = {Orlando, Florida}, isbn = {3-540-41770-2}, year = {2001}, language = {en} } @article{Gebhardt2006, author = {Gebhardt, Andreas}, title = {Generative Manufacturing of Ceramic Parts "Vision Rapid Prototyping"}, year = {2006}, abstract = {Table of Contents Introduction 1. Generative Manufacturing Processes 2. Classification of Generative Manufacturing Processes 3. Application of Generative Processes on the Fabrication of Ceramic Parts 3.1 Extrusion 3.2 3D-Printing 3.3 Sintering - Laser Sintering 3.4 Layer-Laminate Processes 3.5 Stereolithography (sometimes written: Stereo Lithography) 4. Layer Milling 5. Conclusion - Vision}, subject = {Rapid prototyping}, language = {en} } @article{Gebhardt2004, author = {Gebhardt, Andreas}, title = {Rapid Prototyping}, series = {Landolt-B{\"o}rnstein - Group VIII Advanced Materials and Technologies‡Vol. 1 Laser Physics and Applications‡Subvol. C Laser Applications / authors: B{\"a}uerle, D. ...}, journal = {Landolt-B{\"o}rnstein - Group VIII Advanced Materials and Technologies‡Vol. 1 Laser Physics and Applications‡Subvol. C Laser Applications / authors: B{\"a}uerle, D. ...}, publisher = {Heidelberg}, address = {Springer}, isbn = {3-540-00105-0}, pages = {105 -- 123}, year = {2004}, language = {en} } @article{FrohbergAnik1985, author = {Frohberg, Martin G. and Anik, Sabri}, title = {Thermodynamic relations between component activities and gas solubilities in binary metallic systems}, series = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, volume = {89}, journal = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, number = {2}, issn = {0940-483X}, pages = {130 -- 134}, year = {1985}, language = {en} } @article{FrohbergAnik1983, author = {Frohberg, Martin G. and Anik, Sabri}, title = {The application of a quadi-chemical lattice model to binary metallic solvents containing oxygen in higher concentrations}, series = {Zeitschrift f{\"u}r Metallkunde}, volume = {74}, journal = {Zeitschrift f{\"u}r Metallkunde}, number = {10}, issn = {0044-3093}, pages = {665 -- 666}, year = {1983}, language = {en} } @article{FrohbergAnik1985, author = {Frohberg, Martin G. and Anik, Sabri}, title = {The calculation of component activities of binary metallic melts from their gas solubilities}, series = {Zeitschrift f{\"u}r Metallkunde}, volume = {76}, journal = {Zeitschrift f{\"u}r Metallkunde}, number = {2}, issn = {0044-3093}, pages = {135 -- 137}, year = {1985}, 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} } @article{FrankoDuKallweitetal.2020, author = {Franko, Josef and Du, Shengzhi and Kallweit, Stephan and Duelberg, Enno Sebastian and Engemann, Heiko}, title = {Design of a Multi-Robot System for Wind Turbine Maintenance}, series = {Energies}, volume = {13}, journal = {Energies}, number = {10}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {10.3390/en13102552}, pages = {Article 2552}, year = {2020}, abstract = {The maintenance of wind turbines is of growing importance considering the transition to renewable energy. This paper presents a multi-robot-approach for automated wind turbine maintenance including a novel climbing robot. Currently, wind turbine maintenance remains a manual task, which is monotonous, dangerous, and also physically demanding due to the large scale of wind turbines. Technical climbers are required to work at significant heights, even in bad weather conditions. Furthermore, a skilled labor force with sufficient knowledge in repairing fiber composite material is rare. Autonomous mobile systems enable the digitization of the maintenance process. They can be designed for weather-independent operations. This work contributes to the development and experimental validation of a maintenance system consisting of multiple robotic platforms for a variety of tasks, such as wind turbine tower and rotor blade service. In this work, multicopters with vision and LiDAR sensors for global inspection are used to guide slower climbing robots. Light-weight magnetic climbers with surface contact were used to analyze structure parts with non-destructive inspection methods and to locally repair smaller defects. Localization was enabled by adapting odometry for conical-shaped surfaces considering additional navigation sensors. Magnets were suitable for steel towers to clamp onto the surface. A friction-based climbing ring robot (SMART— Scanning, Monitoring, Analyzing, Repair and Transportation) completed the set-up for higher payload. The maintenance period could be extended by using weather-proofed maintenance robots. The multi-robot-system was running the Robot Operating System (ROS). Additionally, first steps towards machine learning would enable maintenance staff to use pattern classification for fault diagnosis in order to operate safely from the ground in the future.}, language = {en} } @article{FeldmannPakGessleretal.2006, author = {Feldmann, Markus and Pak, Daniel and Geßler, Achim and Dilthey, Ulrich and Schleser, Markus}, title = {Bonded connections for textile reinforced concrete structures}, series = {Cailiao-gongcheng = Journal of materials engineering}, journal = {Cailiao-gongcheng = Journal of materials engineering}, number = {Special iss.}, issn = {1001-4381}, pages = {123 -- 127}, year = {2006}, language = {en} } @article{FateriHoetterGebhardt2012, author = {Fateri, Miranda and H{\"o}tter, Jan-Steffen and Gebhardt, Andreas}, title = {Experimental and Theoretical Investigation of Buckling Deformation of Fabricated Objects by Selective Laser Melting}, series = {Physics Procedia}, volume = {39}, journal = {Physics Procedia}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1875-3892}, doi = {10.1016/j.phpro.2012.10.062}, pages = {464 -- 470}, year = {2012}, abstract = {Although Selective Laser Melting (SLM) process is an innovative manufacturing method, there are challenges such as inferior mechanical properties of fabricated objects. Regarding this, buckling deformation which is caused by thermal stress is one of the undesired mechanical properties which must be alleviated. As buckling deformation is more observable in hard to process materials, silver is selected to be studied theoretically and experimentally for this paper. Different scanning strategies are utilized and a Finite Element Method (FEM) is applied to calculate the temperature gradient in order to determine its effect on the buckling deformation of the objects from experiments.}, language = {en} } @article{FateriGebhardtThuemmleretal.2014, author = {Fateri, Miranda and Gebhardt, Andreas and Th{\"u}mmler, Stefan and Thurn, Laura}, title = {Experimental investigation on selective laser melting of glass}, series = {Physics procedia : 8th International Conference on Laser Assisted Net Shape Engineering LANE 2014}, volume = {56 (2014)}, journal = {Physics procedia : 8th International Conference on Laser Assisted Net Shape Engineering LANE 2014}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1875-3892 (E-Journal); 1875-3884 (Print)}, doi = {10.1016/j.phpro.2014.08.118}, pages = {357 -- 364}, year = {2014}, language = {en} } @article{FateriGebhardt2015, author = {Fateri, Miranda and Gebhardt, Andreas}, title = {Additive manufactured mechanical disentanglement lock}, series = {RTejournal - Forum f{\"u}r Rapid Technologie}, volume = {12}, journal = {RTejournal - Forum f{\"u}r Rapid Technologie}, publisher = {Fachhochschule Aachen}, address = {Aachen}, issn = {1614-0923}, url = {http://nbn-resolving.de/urn:nbn:de:0009-2-42147}, year = {2015}, language = {en} } @article{FateriGebhardt2015, author = {Fateri, Miranda and Gebhardt, Andreas}, title = {Selective Laser Melting of Soda-Lime Glass Powder}, series = {International Journal of Applied Ceramic Technology}, volume = {12}, journal = {International Journal of Applied Ceramic Technology}, number = {1}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1744-7402}, doi = {10.1111/ijac.12338}, pages = {53 -- 61}, year = {2015}, language = {en} } @article{FateriGebhardt2015, author = {Fateri, Miranda and Gebhardt, Andreas}, title = {Process Parameters Development of Selective Laser Melting of Lunar Regolith for On-Site Manufacturing Applications}, series = {International Journal of Applied Ceramic Technology}, volume = {12}, journal = {International Journal of Applied Ceramic Technology}, number = {1}, publisher = {Wiley-Blackwell}, address = {Oxford}, isbn = {1744-7402}, doi = {10.1111/ijac.12326}, pages = {46 -- 52}, year = {2015}, language = {en} } @article{EnningZambouAbel2004, author = {Enning, Manfred and Zambou, Nathan and Abel, Dirk}, title = {Nonlinear spacing control of following vehicles within platoon a controlled lagrangian approach / Zambou, Nathan ; Enning, Manfred ; Abel, Dirk}, series = {NOLCOS, IFAC Symposium on Nonlinear Control Systems}, journal = {NOLCOS, IFAC Symposium on Nonlinear Control Systems}, pages = {1211 -- 1216}, year = {2004}, language = {en} } @article{EnningZambouAbel2005, author = {Enning, Manfred and Zambou, N. and Abel, D.}, title = {Longitudinal Control of Following Vehicles within Platoon : A Model-Based Predictive Approach / Zambou, N. ; Enning, M. ; Abel, D.}, series = {Advances in automotive control 2004 : a proceedings volume from the IFAC symposium, Salerno, Italy, 19 - 23 April 2004 / ed. C. Pianese}, journal = {Advances in automotive control 2004 : a proceedings volume from the IFAC symposium, Salerno, Italy, 19 - 23 April 2004 / ed. C. Pianese}, publisher = {Elsevier}, address = {Oxford}, isbn = {0080442501}, pages = {733 -- 738}, year = {2005}, language = {en} } @article{EnningStuetzleVierecketal.2006, author = {Enning, Manfred and St{\"u}tzle, Thorsten and Viereck, Uwe and Stribersky, Anton}, title = {Creepage control for use in wheelslide protection systems / St{\"u}tzle, Thorsten ; Viereck, Uwe ; Stribersky, Anton ; Rulka, Wolfgang ; Enning, Manfred ; Abel, Dirk}, series = {Control in transportation systems : proceedings of the 11th IFAC symposium on control in transportation systems (CTS 2006), August 29-31, 2006, Delft, the Netherlands / International Federation of Automatic Control}, journal = {Control in transportation systems : proceedings of the 11th IFAC symposium on control in transportation systems (CTS 2006), August 29-31, 2006, Delft, the Netherlands / International Federation of Automatic Control}, isbn = {0742-5953}, pages = {1 CD-ROM}, year = {2006}, language = {en} } @article{EnningMannBolligetal.2003, author = {Enning, Manfred and Mann, S. and Bollig, A. and Kaierle, S.}, title = {Autonomous Production Cell for Laser Beam Welding / Mann S. ; Bollig, A. ; Kaierle, S. ; Abel, D. ; Poprawe, R.}, publisher = {LIA}, address = {Orlando, Fla}, isbn = {0912035757}, year = {2003}, language = {en} } @article{EnningJenayehMuelleretal.1997, author = {Enning, Manfred and Jenayeh, I. and M{\"u}ller, C. and Rake, Heinrich}, title = {Development and realization of a manipulator for automatic decoupling of freight cars in marshalling yards / Jenayeh, I. ; M{\"u}ller, C. ; Enning, Manfred ; Rake, Heinrich ; Peter, J.}, year = {1997}, language = {en} } @article{EnningJenayehMuelleretal.1998, author = {Enning, Manfred and Jenayeh, I. and M{\"u}ller, C. and Kositza, N.}, title = {Mechatronics in automating shunting processes in marshalling yards / Jenayeh, I. ; M{\"u}ller, C.; Kositza, N. ; Enning, M. ; Rake, H.}, series = {Mechatronics '98 : proceedings of the 6th UK Mechatronics Forum International Conference, Sk{\"o}vde, Sweden, 9-11 September 1998}, journal = {Mechatronics '98 : proceedings of the 6th UK Mechatronics Forum International Conference, Sk{\"o}vde, Sweden, 9-11 September 1998}, publisher = {Pergamon}, address = {Amsterdam}, isbn = {0-08-043339-1}, pages = {xxi, 918 S. : graph. Darst.}, year = {1998}, language = {en} } @article{EnningJenayehMuelleretal.1998, author = {Enning, Manfred and Jenayeh, I. and M{\"u}ller, C. and Kositza, N.}, title = {A New Approach for Automating Shunting Processes in Marshalling Yards / Jenayeh, I.; M{\"u}ller, C. ; Kositza, N. ; Enning, M. ; Rake, H.}, series = {Computational Engineering in Systems Applications : 2nd IMACS International Multiconference CESA'98; [abstracts; Nabeul-Hammamet, Tunisia, April 1 - 4, 1998] / ed. by Pierre Borne}, journal = {Computational Engineering in Systems Applications : 2nd IMACS International Multiconference CESA'98; [abstracts; Nabeul-Hammamet, Tunisia, April 1 - 4, 1998] / ed. by Pierre Borne}, publisher = {UCIS}, address = {Villeneuve d'Ascq}, pages = {338 -- 343}, year = {1998}, language = {en} } @article{EnningHueckerJenayehetal.1999, author = {Enning, Manfred and H{\"u}cker, Jan and Jenayeh, Imad and Rake, Heinrich}, title = {A Parametric Identification Scheme for a Self-tuning Industrial Compact Controller - INTERKAMA 1999 / Hucker, Jan ; Jenayeh, Imad ; Enning, Manfred ; Rake, Heinrich}, year = {1999}, language = {en} } @article{EnningBernhardRake1994, author = {Enning, Manfred and Bernhard, S. and Rake, H.}, title = {Automation of a laboratory plant for direct casting of thin steel strips / Bernhard, S. ; Enning, M. ; Rake, H.}, series = {Control Engineering Practice. 2 (1994), H. 6}, journal = {Control Engineering Practice. 2 (1994), H. 6}, isbn = {0967-0661}, pages = {961 -- 967}, year = {1994}, language = {en} } @article{EnningBaier2009, author = {Enning, Manfred and Baier, M.}, title = {Energetic and operational use of FlexCargoRail freight wagons in the single wagon load traffic / Baier, M. ; Enning, M.}, series = {Towards zero emission : EVS 24, the 24th International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium \& Exhibition, Stavanger, Norway, May 13 - 16, 2009 ; symposium proceedings / organised by AVERE ... Robert St{\"u}ssi [Hrsg.]}, journal = {Towards zero emission : EVS 24, the 24th International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium \& Exhibition, Stavanger, Norway, May 13 - 16, 2009 ; symposium proceedings / organised by AVERE ... Robert St{\"u}ssi [Hrsg.]}, address = {Stavanger}, pages = {CD-Rom}, year = {2009}, language = {en} } @article{EngemannDuKallweitetal.2020, author = {Engemann, Heiko and Du, Shengzhi and Kallweit, Stephan and C{\"o}nen, Patrick and Dawar, Harshal}, title = {OMNIVIL - an autonomous mobile manipulator for flexible production}, series = {Sensors}, volume = {20}, journal = {Sensors}, number = {24, art. no. 7249}, publisher = {MDPI}, address = {Basel}, isbn = {1424-8220}, doi = {10.3390/s20247249}, pages = {1 -- 30}, year = {2020}, 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} } @article{DuesGebhardtKallweitetal.1994, author = {Dues, M. and Gebhardt, Andreas and Kallweit, Stephan and Scheffler, T. and Siekmann, H. and Uchiyama, T.}, title = {Flow Visualization in a Cavitating Flow}, series = {Proceedings of the German-Japanese Symposium on Multi-Phase Flow : Karlsruhe, Germany, August 23 - 25, 1994 / comp. by U. M{\"u}ller ...}, journal = {Proceedings of the German-Japanese Symposium on Multi-Phase Flow : Karlsruhe, Germany, August 23 - 25, 1994 / comp. by U. M{\"u}ller ...}, publisher = {Kernforschungszentrum Karlsruhe}, address = {Karlsruhe}, pages = {391 -- 402}, year = {1994}, language = {en} } @article{DiltheySchleserFeldmannetal.2008, author = {Dilthey, Ulrich and Schleser, Markus and Feldmann, Martin and Pak, Daniel and Geßler, Achim}, title = {Investigation of punctiform, plane and hybrid joints of textile-reinforced concrete parts}, series = {Cement and concrete composites}, volume = {Vol. 30}, journal = {Cement and concrete composites}, number = {iss. 2}, issn = {0958-9465}, pages = {82 -- 87}, year = {2008}, language = {en} } @article{DiltheyBrandenburgSchleser2004, author = {Dilthey, Ulrich and Brandenburg, Annette and Schleser, Markus}, title = {Dispensing and application of unfilled adhesives in the micro range}, series = {Welding and cutting. 3 (2004), H. 4}, journal = {Welding and cutting. 3 (2004), H. 4}, issn = {1612-3433}, pages = {250 -- 254}, year = {2004}, language = {en} } @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{BucurLazarescuPopetal.2019, author = {Bucur, Alexandru and Lazarescu, Lucian and Pop, Grigore Marian and Achimas, Gheorghe and Gebhardt, Andreas}, title = {Tribological performance of biodegradable lubricants under different surface roughness of tools}, series = {Academic Journal of Manufacturing Engineering}, volume = {17}, journal = {Academic Journal of Manufacturing Engineering}, number = {1}, issn = {1583-7904}, pages = {172 -- 178}, year = {2019}, language = {en} } @article{BraunChengDoweyetal.2021, author = {Braun, Sebastian and Cheng, Chi-Tsun and Dowey, Steve and Wollert, J{\"o}rg}, title = {Performance evaluation of skill-based order-assignment in production environments with multi-agent systems}, series = {IEEE Journal of Emerging and Selected Topics in Industrial Electronics}, journal = {IEEE Journal of Emerging and Selected Topics in Industrial Electronics}, number = {Early Access}, publisher = {IEEE}, address = {New York}, issn = {2687-9735}, doi = {10.1109/JESTIE.2021.3108524}, year = {2021}, abstract = {The fourth industrial revolution introduces disruptive technologies to production environments. One of these technologies are multi-agent systems (MASs), where agents virtualize machines. However, the agent's actual performances in production environments can hardly be estimated as most research has been focusing on isolated projects and specific scenarios. We address this gap by implementing a highly connected and configurable reference model with quantifiable key performance indicators (KPIs) for production scheduling and routing in single-piece workflows. Furthermore, we propose an algorithm to optimize the search of extrema in highly connected distributed systems. The benefits, limits, and drawbacks of MASs and their performances are evaluated extensively by event-based simulations against the introduced model, which acts as a benchmark. Even though the performance of the proposed MAS is, on average, slightly lower than the reference system, the increased flexibility allows it to find new solutions and deliver improved factory-planning outcomes. Our MAS shows an emerging behavior by using flexible production techniques to correct errors and compensate for bottlenecks. This increased flexibility offers substantial improvement potential. The general model in this paper allows the transfer of the results to estimate real systems or other models.}, 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{AnikKapoorFrohberg1983, author = {Anik, Sabri and Kapoor, Madan Lal and Frohberg, Martin G.}, title = {Thermodynamic behaviour of oxygen in molten substitutional alloy solvents}, series = {Zeitschrift f{\"u}r Metallkunde}, volume = {74}, journal = {Zeitschrift f{\"u}r Metallkunde}, number = {1}, issn = {0044-3093}, pages = {53 -- 58}, year = {1983}, language = {en} } @article{AnikFrohbergKapoor1983, author = {Anik, Sabri and Frohberg, Martin G. and Kapoor, Madan Lal}, title = {Experiments and theoretical considerations on the solution of oxygen in binary metal alloys}, series = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, volume = {87}, journal = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, number = {12}, issn = {0005-9021}, pages = {1201 -- 1204}, year = {1983}, language = {en} } @article{AnikFrohbergKapoor1983, author = {Anik, Sabri and Frohberg, Martin G. and Kapoor, Madan Lal}, title = {Prediction of thermodynamic properties of oxygen in binary metallic solvents}, series = {Zeitschrift f{\"u}r Metallkunde}, volume = {74}, journal = {Zeitschrift f{\"u}r Metallkunde}, number = {6}, issn = {0044-3093}, pages = {372 -- 375}, year = {1983}, language = {en} } @article{AnikFrohberg1984, author = {Anik, Sabri and Frohberg, Martin G.}, title = {Thermodynamics and solubility of oxygen in liquid copper-lead alloys at 1200°C from E.M.F. measurements}, series = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, volume = {88}, journal = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, number = {8}, issn = {0940-483X}, pages = {707 -- 710}, year = {1984}, language = {en} } @article{AnikFrohberg1987, author = {Anik, Sabri and Frohberg, Martin G.}, title = {Thermodynamics and solubility of oxygen in liquid bismuth-lead and bismuth-antimony alloys}, series = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, volume = {91}, journal = {Berichte der Bunsengesellschaft f{\"u}r physikalische Chemie}, number = {7}, issn = {0940-483X}, pages = {790 -- 794}, year = {1987}, language = {en} }