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  - https://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  - Optimization of laser welding of DP/TRIP steel sheets using statistical approach
JF  - Optics and laser technology
N2  - Generally, the quality of a weld joint is directly influenced by the welding input parameter settings. Selection of proper process parameters is important to obtain the desired weld bead profile and quality. In this research work, numerical and graphical optimization techniques of the CO2 laser beam welding of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets were carried out using response surface methodology (RSM) based on Box–Behnken design. The procedure was established to improve the weld quality, increase the productivity and minimize the total operation cost by considering the welding parameters range of laser power (2–2.2 kW), welding speed (40–50 mm/s) and focus position (−1 to 0 mm). It was found that, RSM can be considered as a powerful tool in experimental welding optimization, even when the experimenter does not have a model for the process. Strong, efficient and low cost weld joints could be achieved using the optimum welding conditions.
Y1  - 2012
U6  - https://doi.org/10.1016/j.optlastec.2011.06.028
SN  - 1879-2545 (E-Journal); 0030-3992 (Print); 0308-4280 (Print)
VL  - 44
IS  - 1
SP  - 255
EP  - 262
PB  - Elsevier
CY  - Amsterdam
ER  - 
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  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Zabirov, Alexander
A1  - Füssel, Uwe
A1  - Schnick, Michael
A1  - Hertel, Martin
A1  - Jaeckel, Sebastian
T1  - Modelling and visualisation of the GMA process
JF  - Welding and Cutting
Y1  - 2012
SN  - 1612-3433
VL  - 11
IS  - 4
SP  - 242
EP  - 249
PB  - DVS Verlag
CY  - Düsseldorf
ER  - 
TY  - CHAP
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Scheik, Sven
A1  - Michaeli, Walter
A1  - Grönlund, Oliver
A1  - Neuß, Andreas
A1  - Wunderle, Johannes
A1  - Poprawe, Reinhart
A1  - Rösner, A.
A1  - Bobzin, Kirsten
A1  - Schläfer, Thomas
A1  - Theiß, Sebastian
A1  - Kutschmann, Pia
A1  - Haberstroh, Edmund
A1  - Flock, Dustin
A1  - Bührig-Polaczek, Andreas
A1  - Jakob, M.
ED  - Thoben, Klaus-Dieter
T1  - Novel process chains for the production of plastics/metal-hybrids
T2  - 17th International Conference on Concurrent Enterprising (ICE 2011) : Aachen, Germany, 20 - 22 June 2011
Y1  - 2011
SN  - 978-1-457-70772-8 ; 978-3-943024-05-0
SP  - 596
EP  - 604
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - CHAP
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Schoene, Jens
A1  - Hegger, Josef
A1  - Gallwoszus, Jörg
A1  - Feldmann, Markus
A1  - Kopp, Maik
A1  - Gündel, Max
ED  - Cairns, John W.
T1  - Investigation on bond mechanisms of innovative small-scale shear connectors between steel and concrete
T2  - Bond in concrete 2012. Vol. 2. Bond in new materials and under severe conditions
Y1  - 2012
SN  - 978-88-907078-3-4
SP  - 893
EP  - 898
PB  - Publisher creations
CY  - Manerbio, Brescia
ER  - 
TY  - CHAP
A1  - Reisgen, Uwe
A1  - Schoene, Jens
A1  - Schleser, Markus
A1  - Gries, Thomas
A1  - Glowania, Michael
T1  - Impregnated textile reinforcements for concrete applications
T2  - European Coatings Congress : Nürnberg, Germany, 30.3. - 1.4. 2009
Y1  - 2009
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  - GEN
A1  - Reiswich, Martin
A1  - Brandt, Hannes
A1  - Czupalla, Markus
T1  - Passive thermal control by integration of phase change material into additively manufactured structures
T2  - E2. 47th Student conference
N2  - Optical Instruments require an extremely stable thermal surrounding to prevent loss of data quality by misalignments of the instrument components resulting from material deformation due to temperature f luctuations (e.g. from solar intrusion). Phase Change Material (PCM) can be applied as a thermal damper to achieve a more uniform temperature distribution. The challenge of this method is, among others, the integration of PCM into affected areas. If correctly designed, incoming heat is latently absorbed during phase change of the PCM, i.e. the temperature of a structure remains almost constant. In a cold phase, the heat during phase change is released again latently until the PCM returns to its original state of aggregation. Thus, the structure is thermally stabilized. At FH Aachen– University of Applied Sciences research is conducted to apply PCM directly into the structures of affected components (baffles, optical benches, electronic boxes, etc.). Through the application of Additive Manufacturing, the necessary voids are directly printed into these structures and filled later with PCM. Additive Manufacturing enables complex structures that would not have been possible with conservative manufacturing methods. A corresponding Breadboard was developed and manufactured by Selective Laser Melting (SLM). The current state of research includes the handling and analysis of the Breadboard, tests and a correlation of the thermal model. The results have shown analytically and practically that it is possible to use PCM as an integral part of the structure as a thermal damper. The results serve as a basis for the further development of the technology, which should maximize performance and enable the integration of PCM into much more complex structures.
Y1  - 2019
N1  - 70th International Astronautical Congress, 21. - 25. Oktober 2019, Washington D.C., United States
ER  - 
TY  - JOUR
A1  - Reißel, Martin
T1  - Three-dimensional eddy-current computation using Krylov subspace methods / Reissel, Martin
JF  - IMA Journal of Mathematics Applied in Business and Industry. 8 (1997), H. 2
Y1  - 1997
SN  - 1471-678X
SP  - 99
EP  - 121
ER  - 
TY  - JOUR
A1  - Reißel, Martin
T1  - On a transmission boundary-value problem for the time-harmonic Maxwell equations without displacement currents / Martin Reissel
Y1  - 1992
N1  - Bericht der Arbeitsgruppe Technomathematik ; 84 ; Vorabdruck
SP  - 19 S.
ER  - 
TY  - JOUR
A1  - Reißel, Martin
T1  - On a Transmission Boundary Value Problem for the Time-Harmonic Maxwell Equations without Displacement Currents / Martin Reissel
JF  - SIAM Journal on Mathematical Analysis. 24 (1993), H. 6
Y1  - 1993
SN  - 0036-1410
SP  - 1440
EP  - 1457
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Bitsch, G.
A1  - Mawick, G.
A1  - Tokar, G.
T1  - Transient FEM Simulation of a Door Closing Process and Application to Fatigue / Bitsch, G. ; Mawick, G. ; Reißel, M. ; Tokar, G.
JF  - Proceedings of the 20. CAD-FEM Users Meeting, 2002
Y1  - 2002
N1  - 2.11.10
SP  - 1
EP  - 8
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Bitsch, G.
A1  - Stamm, H.
T1  - A Stern Door Slam Fatigue Calculation / Bitsch, G. ; Reißel, M. ; Stamm, H.
JF  - Proceedings of the 18. CAD-FEM Users Meeting
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Herbst, Michael
A1  - Gottschalk, Swen
A1  - Hardelauf, Horst
T1  - On preconditioning for a parallel solution of the Richards equation / Herbst, Michael ; Gottschalk, Swen ; Reißel, Martin ; Hardelauf, Horst ; Kasteel, Roy ; Javaux, Matthieu ; Vanderborght, Jan ; Vereecken, Harry
JF  - Computers & Geosciences. 34 (2008), H. 12
Y1  - 2008
SN  - 0098-3004
SP  - 1958
EP  - 1963
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Hirschfeld, J. A.
A1  - Lustfeld, H.
A1  - Steffen, B.
T1  - Magnetotomography and Electric Currents in a Fuel Cell / Lustfeld, H. ; Reißel, M. ; Steffen, B.
JF  - Fuel Cells. 9 (2009), H. 4
Y1  - 2009
SN  - 1615-6854
SP  - 474
EP  - 481
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Lustfeld, H.
A1  - Hirschfeld, J.
A1  - Steffen, B.
T1  - Uniqueness of magnetotomography for fuel cells and fuel cell stacks / Lustfeld, H. ; Hirschfeld, J. ; Reißel, M ; Steffen, B.
JF  - Journal of Physics A: Mathematical and Theoretical. 42 (2009), H.  495205
Y1  - 2009
SN  - 0022-3689
SP  - 9 S.
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Lustfeld, H.
A1  - Steffen, B.
A1  - Schmidt, U.
T1  - Reconstruction of Electric Currents in a Fuel Cell by Magnetic Field Measurements / Lustfeld, H. ; Reißel, M. ; Steffen, B. ; Schmidt, U.
JF  - Journal of fuel cell science and technology
Y1  - 2009
SN  - 1550-624X
VL  - Vol. 6
IS  - Iss. 2
SP  - 021012-1
EP  - 021012-8
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Quell, P.
T1  - On the Vanishing Displacement Current Limit for Eddy-Current Problems / Quell, P. ; Reißel, M.
JF  - ZAMM - Zeitschrift für Angewandte Mathematik und Mechanik. 76 (1996), H. S2
Y1  - 1996
SN  - 0044-2267
N1  - ICIAM/GAMM 95 Applied Analysis
SP  - 649
EP  - 650
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Takei, T.
A1  - Brune, M.
A1  - Köttgen, V.
T1  - FEM Based Durability Analysis of the Knuckle of a Passenger Car / Takei, T. ; Brune, M. ; Köttgen, V. ; Reissel, M.
JF  - Proceedings. JSAE Annual Congress (1999)
Y1  - 1999
SN  - 0919-1364
SP  - 17
EP  - 20
ER  -