TY - JOUR A1 - Reisgen, Uwe A1 - Schleser, Markus A1 - Mokrov, Oleg A1 - Zabirov, Alexander T1 - Virtual welding equipment for simulation of GMAW processes with integration of power source regulation JF - Frontiers of materials science Y1 - 2011 SN - 2095-0268 (E-Journal); 2095-025X (Print) VL - Vol. 5 IS - Iss. 2 SP - 79 EP - 89 PB - Springer CY - Berlin ER - TY - CHAP A1 - Sedlacek, G. A1 - Geßler, A. A1 - Schleser, Markus A1 - Mund, F. A1 - Völling, B. T1 - Verbindungen vorgefertigter Textilbetonbauteile T2 - Textile reinforced structures : proceedings of the 2nd Colloquium on Textile Reinforced Structures (CTRS2), Dresden, Germany, 29.9. - 1.10.2003 Y1 - 2003 SN - 3-86005-386-8 SP - 481 EP - 493 PB - Techn. Univ. CY - Dresden ER - TY - JOUR A1 - Reisgen, Uwe A1 - Schleser, Markus A1 - Mokrov, Oleg A1 - Ahmed, Essam T1 - Uni- and bi-axial deformation behavior of laser welded advanced high strength steel sheets JF - Journal of materials processing technology N2 - Bead-on-plate butt joints of 2.5 mm hot rolled DP600/DP600 and 1.2 mm cold rolled TRIP700/TRIP700 steel sheets were performed using 6 kW CO2 laser beam welding. The welding speed ranged from 1.5 to 3.0 and from 2.1 to 3.9 m/min in DP/DP and TRIP/TRIP steel weldments respectively. A top surface helium gas was used as a shielding gas at a flow rate of 20 l/min. Metallographic examinations and transverse tensile testing (DIN EN 895: 1995) were carried out to characterize the weldments. The formability of base metals and weldments were investigated by standard Erichsen test (DIN EN ISO 20482). It was found that the uniaxial plastic behavior of both DP600 and TRIP700 base metals was in agreement with Swift and modified Mecking–Kocks models respectively. In a perpendicular tensile test to the weld line, all specimens were fractured at the base metal however the strengths were somewhat higher than those of base metal. There was a significant reduction in formability caused by welding of both DP/DP and TRIP/TRIP steel weldments and the formability has been improved with the increase of the welding speed. Y1 - 2010 U6 - http://dx.doi.org/http10.1016/j.jmatprotec.2010.08.003 SN - 0924-0136 VL - 210 IS - 15 SP - 2188 EP - 2196 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Reisgen, Uwe A1 - Schoene, Jens A1 - Schleser, Markus A1 - Jerabek, Jakub A1 - Keil, Allessandra ED - Brameshuber, Wolfgang T1 - Theoretical and experimental investigations on textile-reinforced concrete spalling behavior T2 - Textile reinforced concrete : 2nd ICTRC : International RILEM Conference on Material Science : Aachen Germany, September 6 - 8, 2010. Vol. 1. (RILEM Proceedings PRO ; 75) Y1 - 2010 SN - 978-2-35158-106-3 SP - 153 EP - 162 PB - RILEM Publ. CY - Bagneux ER - TY - CHAP A1 - Schoene, Jens A1 - Reisgen, Uwe A1 - Schleser, Markus A1 - Jerabek, Jakub A1 - Chudoba, Rostislav ED - Fisher, Gregor T1 - Theoretical and experimental investigations on textile-reinforced concrete spalling behavior T2 - 8th International PhD Symposium in Civil Engineering : Lyngby, June 20-23, 2010 : proceedings Y1 - 2010 SN - 9788778773012 SP - 383 EP - 388 PB - Technical University of Denmark, Dept. of Civil Engineering CY - Lyngby ER - TY - CHAP A1 - Walk-Lauffer, Bernd A1 - Raupach, Michael A1 - Dilger, Klaus A1 - Böhm, Stefan A1 - Mundt, F. A1 - Dilthey, Ulrich A1 - Schleser, Markus T1 - The interconnection between inner filaments of textile reinforcement by means of polymer modified concrete T2 - Proceedings of the First International Conference on Innovative Materials and Technologies for Construction and Restoration : : Lecce, June 6 - 9, 2004 / Università degli Studi di Lecce / ed. Antonio La Tegola. Vol. 1: Key-notes, materials, construction Y1 - 2004 SP - 150 EP - 159 PB - Liguori CY - Napoli ER - TY - JOUR A1 - Reisgen, Uwe A1 - Schleser, Markus A1 - Mokrov, Oleg A1 - Ahmed, Essam T1 - Statistical modeling of laser welding of DP/TRIP steel sheets JF - Optics and laser technology N2 - In this research work, a statistical analysis of the CO2 laser beam welding of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets was done using response surface methodology. The analysis considered the effect of laser power (2–2.2 kW), welding speed (40–50 mm/s) and focus position (−1 to 0 mm) on the heat input, the weld bead geometry, uniaxial tensile strength, formability limited dome height and welding operation cost. The experimental design was based on Box–Behnken design using linear and quadratic polynomial equations for predicting the mathematical models. The results indicate that the proposed models predict the responses adequately within the limits of welding parameters being used and the welding speed is the most significant parameter during the welding process. Y1 - 2012 U6 - http://dx.doi.org/10.1016/j.optlastec.2011.05.025 SN - 1879-2545 (E-Journal); 0030-3992 (Print); 0308-4280 (Print) VL - 44 IS - 1 SP - 92 EP - 101 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Reisgen, Uwe A1 - Schleser, Markus A1 - Mokrov, Oleg A1 - Ahmed, Essam T1 - Shielding gas influences on laser weldability of tailored blanks of advanced automotive steels JF - Applied surface science N2 - The effects of shielding gas types and flow rates on CO2 laser weldability of DP600/TRIP700 steel sheets were studied in this work. The evaluated shielding gases were helium (He), argon (Ar) and different mixtures of He and Ar. Weld penetration, tensile strength and formability (Erichsen test) of laser welds were found to be strongly dependent upon the shielding gas types. The ability of shielding gas in removing plasma plume and thus increasing weld penetration is believed to be closely related to ionization potential and atomic weight which determine the period of plasma formation and disappearance. It was found that the higher helium shielding gas flow rate, the deeper weld penetration and the lower weld width. Y1 - 2010 U6 - http://dx.doi.org/10.1016/j.apsusc.2010.08.042 SN - 0169-4332 (E-Journal); 0169-4332 (Print) VL - 257 IS - 5 SP - 1401 EP - 1406 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Quadflieg, Till A1 - Schoene, Jens A1 - Schleser, Markus A1 - Jockenhövel, Stefan A1 - Reisgen, Uwe A1 - Gries, Thomas ED - Heslehurst, Rikard Benton T1 - Shear connectors for hybrid joints of metal and FRP T2 - Diversity in composites : conference proceedings : Composites Australia and CRC-ACS 2012 conference Y1 - 2012 SN - 978-0-9873285-0-2 SP - [152] EP - [160] PB - Composites Australia CY - Hawthorne ER - TY - CHAP A1 - Chudoba, Rostislav A1 - Konrad, Martin A1 - Schleser, Markus A1 - Meskouris, Konstantin A1 - Reisgen, Uwe ED - Curbach, Manfred T1 - Parametric study of tensile response of TRC specimens reinforced with epoxy-penetrated multi-filament yarns T2 - Textilbeton - Theorie und Praxis : Tagungsband zum 4. Kolloquium zu textilbewehrten Tragwerken (CTRS4) und zur 1. Anwendertagung, Dresden, 3.6.2009 - 5.6.2009 Y1 - 2009 SN - 978-3-86780-122-5 SP - 87 EP - 98 PB - Techn. Univ. CY - Dresden ER -