@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{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} } @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} } @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} } @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} } @inproceedings{GregorioFatigatiKallweit2015, author = {Gregorio, Fabrizio de and Fatigati, Giovanni and Kallweit, Stephan}, title = {Tiltrotor airframe flow field characterization by SPIV}, series = {11th International Symposium on Partivle Image Velocimetry - PIV15 , Santa Barbara, California, Sept 14-16, 2015}, booktitle = {11th International Symposium on Partivle Image Velocimetry - PIV15 , Santa Barbara, California, Sept 14-16, 2015}, pages = {15 S.}, year = {2015}, language = {en} } @inproceedings{GrossmannGabrielliHerdrichetal.2015, author = {Großmann, Agnes and Gabrielli, Roland Antonius and Herdrich, Georg and Fasoulas, Stefanos and Schnauffer, Peter and Middendorf, Peter and Fateri, Miranda and Gebhardt, Andreas}, title = {Overview of the MultiRob 3D Lunar Industrial Development Project}, series = {Conference Contribution for the 30th ISTS, Kobe, Japan, 04.07.-10.07.2015}, booktitle = {Conference Contribution for the 30th ISTS, Kobe, Japan, 04.07.-10.07.2015}, pages = {8 S.}, year = {2015}, language = {en} } @article{Grundmann1992, author = {Grundmann, Reinhard}, title = {Design Criteria for Aeroacoustic Wind Tunnels}, year = {1992}, language = {en} } @inproceedings{GoettscheHinschWittwer1992, author = {G{\"o}ttsche, Joachim and Hinsch, Andreas and Wittwer, Volker}, title = {Electrochromic and optical properties of mixed WO3-TiO2 thin films produced by sputtering and the sol-gel technique}, series = {Optical materials technology for energy efficiency and solar energy conversion XI: chromogenics for smart windows : 19 and 21 May 1992, Toulouse-Lab{\`e}ge. (SPIE proceedings series. 1728)}, booktitle = {Optical materials technology for energy efficiency and solar energy conversion XI: chromogenics for smart windows : 19 and 21 May 1992, Toulouse-Lab{\`e}ge. (SPIE proceedings series. 1728)}, editor = {Hugo-Le Goff, Anne}, publisher = {SPIE}, address = {Bellingham, Wash.}, isbn = {0-8194-0901-4}, pages = {13 -- 25}, year = {1992}, 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{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{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} } @inproceedings{HartmannKallweitFeldusenetal.2012, author = {Hartmann, Axel and Kallweit, Stephan and Feldusen, Antje and Schr{\"o}der, Wolfgang}, title = {Detection of upstream propagating sound waves at buffet flow using high-speed PIV}, pages = {14 S. : graph. Darst.}, year = {2012}, 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{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} } @inproceedings{HuberBleckScheiketal.2011, author = {Huber, Fr{\´e}d{\´e}ric and Bleck, Wolfgang and Scheik, Sven and Schleser, Markus and Reisgen, Uwe}, title = {Investigation of galvanneal coating adherence in adhesive bonded joints using lap shear test}, series = {Galvatech 2011 : 8th International Conference on Zinc and Zinc Alloy Coated Steel Sheet, June 21 - 24, 2011, Genova (Italy) ; proceedings}, booktitle = {Galvatech 2011 : 8th International Conference on Zinc and Zinc Alloy Coated Steel Sheet, June 21 - 24, 2011, Genova (Italy) ; proceedings}, publisher = {Associazione Italiana di Metallurgia}, address = {Mailand}, organization = {International Conference on Zinc and Zinc Alloy Coated Steel Sheet <8, 2011, Genua>}, isbn = {978-88-85298-82-8}, pages = {Paper No. 43}, year = {2011}, language = {en} } @article{HoetterFateriGebhardt2012, author = {H{\"o}tter, Jan-Steffen and Fateri, Miranda and Gebhardt, Andreas}, title = {Selective laser melting of metals: desktop machines open up new chances even for small companies}, series = {Advanced materials research}, volume = {622-623}, journal = {Advanced materials research}, publisher = {Trans Tech Publ.}, address = {Baech}, issn = {1662-8985 (E-Journal); 1022-6680 (Print)}, doi = {10.4028/www.scientific.net/AMR.622-623.461}, pages = {461 -- 465}, year = {2012}, abstract = {Additive manufacturing (AM) of metal parts by using Selective Laser Melting (SLM) has become a powerful tool mostly in the area of automotive, aerospace engineering and others. Especially in the field of dentistry, jewelry and related branches that require individualized or even one-of-a-kind products, the direct digital manufacturing process opens up new ways of design and manufacturing. In these fields, mostly small and medium sized businesses (SME) are operating which do not have sufficient human and economic resources to invest in this technology. But to stay competitive, the application of AM can be regarded as a necessity. In this situation a new desktop machine (Realizer SLM 50) was introduced that cost about 1/3 of a shop floor SLM machine and promises small quality parts. To find out whether the machine really is an alternative for SMEs the University of Applied Science, Aachen, Germany, designed, build and optimized typical parts from the dentistry and the jewelry branches using CoCr and silver material, the latter being new with this application. The paper describes the SLM procedure and how to find and optimize the most important parameters. The test is accompanied by digital simulation in order to verify the build parameters and to plan future builds. The procedure is shown as well as the resulting parts made from CoCr and silver material.}, language = {en} } @article{KallweitDuesSiekmann1994, author = {Kallweit, Stephan and Dues, M. and Siekmann, H.}, title = {Particle-Image-Velocimetry (PIV) in rotierenden Maschinen / Dues, M. ; Kallweit, S. ; Siekmann, H.}, series = {Lasermethoden in der Str{\"o}mungsmesstechnik, 3. Fachtagung der Deutschen Gesellschaft f{\"u}r Laser-Anemometrie (GALA), Bremen, DE, 5.-7. Sep, 1994}, journal = {Lasermethoden in der Str{\"o}mungsmesstechnik, 3. Fachtagung der Deutschen Gesellschaft f{\"u}r Laser-Anemometrie (GALA), Bremen, DE, 5.-7. Sep, 1994}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8265-0162-4}, pages = {19.1 -- 19-5}, year = {1994}, language = {en} } @article{KallweitDuesSiekmann1994, author = {Kallweit, Stephan and Dues, M. W. and Siekmann, H. E.}, title = {Spectral Analysis of Pressure Fluctuations and Velocity Fields as Investigated on Propeller Pumps / Dues, M. W. ; Kallweit, S. D. ; Siekmann, H. E.}, series = {Preprints : Fifth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-5) : May 8 - 11, 1994, Maui Marriott Hotel, Kaanapali, Maui, Hawaii, U.S.A / sponsored by Pacific Center of Thermal-Fluids Engineering. [W.-J. Yang, chairman] / Vol. B.}, journal = {Preprints : Fifth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-5) : May 8 - 11, 1994, Maui Marriott Hotel, Kaanapali, Maui, Hawaii, U.S.A / sponsored by Pacific Center of Thermal-Fluids Engineering. [W.-J. Yang, chairman] / Vol. B.}, pages = {98 -- 112}, year = {1994}, language = {en} }