TY - CHAP A1 - Doynov, Nikolay A1 - Ossenbrink, Ralf A1 - Kloshek, Alexander A1 - Michailov, Vesselin T1 - Simulation of the Welding Distortions in Large Welded Structures KW - Simulation KW - Welding Distortions KW - Distortions KW - Welded Structures KW - welding KW - schweißen KW - fügen KW - Simulation KW - Fügetechnik Y1 - 2007 UR - http://www.fabtechexpo.com ER - TY - CHAP A1 - Deflorio, Andrea A1 - Klingler, M. A1 - Brinkmann, D. A1 - Michailov, Vesselin ED - Cerjak, Horst-Hannes T1 - Laser Beam Welding Simulation with two Different Approaches T2 - Mathematical modelling of weld phenomena 8 KW - Laser Beam Welding KW - Simulation KW - Different Approaches KW - Laserstrahlschweißen KW - welding KW - schweißen KW - fügen KW - Fügetechnik Y1 - 2007 SN - 978-3-902465-69-6 PB - Verl. der Techn. Univ. Graz CY - Graz ER - TY - CHAP A1 - Ossenbrink, Ralf A1 - Michailov, Vesselin ED - Cerjak, Horst-Hannes T1 - Thermomechanical Numerical Simulation with the Maximum Temperature Austenisation Cooling Time Model (STAAZ) T2 - Mathematical modelling of weld phenomena KW - thermomechanical numerical simulation KW - thermomechanical KW - simulation KW - welding KW - fügen KW - schweißen KW - Fügetechnik Y1 - 2007 SN - 978-3-902465-69-6 PB - Verl. der Techn. Univ. Graz CY - Graz ER - TY - CHAP A1 - Stadtaus, Marc A1 - Doynov, Nikolay A1 - Michailov, Vesselin ED - Cerjak, Horst-Hannes T1 - Investigation of the Modified CTS-Test for the Prediction of Cold Cracking Susceptibility by Numerical Models T2 - Mathematical modelling of weld phenomena 8 KW - CTS-Test KW - cold cracking susceptibility KW - numerical models KW - Kaltriss KW - numerische Modelle KW - welding KW - schweißen KW - fügen KW - Fügetechnik Y1 - 2007 SN - 978-3-902465-69-6 PB - Verl. der Techn. Univ. Graz CY - Graz ER - TY - CHAP A1 - Karkhin, Victor A. A1 - Levchenko, A. M. A1 - Homich, P. N. A1 - Michailov, Vesselin ED - Cerjak, Horst-Hannes T1 - Computer-Aided Determination of Diffusible Hydrogen in Deposited Weld Metal T2 - Mathematical Modelling of Weld Phenomena 8 KW - computer determination KW - determination KW - diffusible hydrogen KW - hydrogen KW - deposited weld metal KW - welding KW - fügen KW - schweißen KW - Fügetechnik Y1 - 2007 SN - 978-3-902465-69-6 SP - 785 EP - 798 PB - Verl. der Techn. Univ. Graz CY - Graz ER - TY - CHAP A1 - Karkhin, Victor A. A1 - Homich, P. N. A1 - Michailov, Vesselin ED - Cerjak, Horst-Hannes T1 - Models for Volume Heat Sources and Functional-Analytical Technique for Calculating the Temperature Fields in Butt Welding T2 - Mathematical modelling of weld phenomena 8 KW - functional-analytical technique KW - calculating temperature fields KW - temperature fields KW - butt welding KW - welding KW - schweißen KW - fügen KW - Fügetechnik Y1 - 2007 SN - 978-3-902465-69-6 PB - Verl. der Techn. Univ. Graz CY - Graz ER - TY - CHAP A1 - Doynov, Nikolay A1 - Ossenbrink, Ralf A1 - Schmidt, J. A1 - Michailov, Vesselin T1 - Utilization of Weld Pool Models in Thermal-Mechanical Simulations T2 - Mathematical modelling of weld phenomena 8 KW - weld pool models KW - model KW - thermal-mechanical simulation KW - simulation KW - welding KW - fügen KW - schweißen KW - Fügetechnik Y1 - 2007 SN - 978-3-902465-69-6 PB - Verl. der Techn. Univ. Graz CY - Graz ER - TY - CHAP A1 - Schwenk, C. A1 - Rethmeier, M. A1 - Dilger, Klaus A1 - Michailov, Vesselin ED - Cerjak, Horst-Hannes T1 - Sensitivity Analysis of Welding Simulation Depending on Material Properties Value Variation T2 - Mathematical modelling of weld phenomena 8 KW - sensitivity analysis KW - analysis KW - welding simulation KW - simulation KW - material properties value variation KW - welding KW - schweißen KW - fügen KW - Fügetechnik Y1 - 2007 SN - 978-3-902465-69-6 PB - Verl. der Techn. Univ. Graz CY - Graz ER - TY - CHAP A1 - Karkhin, Victor A. A1 - Homich, P. N. A1 - Michailov, Vesselin T1 - Analytical-Experimental Technique for Calculating the Temperature Fields in Laser Welding T2 - 11th Nolamp Conference in Laser Processing of Materials, August 20-22, 2007 Lappeenranta KW - analytical experimental technique KW - analytical KW - calculating temperature fields KW - temperature fields KW - laser welding KW - welding KW - Laserschweißen KW - Temperaturfelder KW - Berechnung Temperaturfelder KW - schweißen KW - fügen KW - Fügetechnik Y1 - 2007 SP - 21 EP - 27 ER - TY - CHAP A1 - Stapelfeld, Christoph A1 - Doynov, Nikolay A1 - Atanasova, D. A1 - Michailov, Vesselin T1 - Calculation of Welding Distortions in Large Structures Using the Maximum Temperature Model and the Coupled Analytic-Numerical Shrinkage Force Model T2 - ESI Global Forum 2010, 19. - 20. Mai 2010, München KW - welding KW - temperature model KW - model KW - analytic KW - numerical KW - shrinkage force model KW - schweißen KW - fügen KW - simulieren Y1 - 2010 ER - TY - GEN A1 - Bokuchava, Gizo A1 - Petrov, Peter A1 - Genchev, Gancho Vladimirov A1 - Michailov, Vesselin A1 - Doynov, Nikolay A1 - Ossenbrink, Ralf T1 - Residual stress analysis in welded joints by neutron difffraction and comouter modeling T2 - Romanian Journal of Physics N2 - Numerical models for thermo-mechanical simulation of the welding residual stresses in laser beam and multi-pass arc welded joints are developed. The models describe the resulting microstructure as a function of the peak temperature, austenization time, cooling time and take into account the microstructure formed after single or multiple thermal cycles. The results of simulations are validated by neutron diffraction experiments performed on FSD diffractometer at the IBR-2 pulsed reactor in FLNP JINR (Dubna, Russia). The elaborated numerical models are in good agreement with obtained neutron diffraction data, which enable to study the influence of different conditions and process parameters on the distribution of residual welding stresses. KW - residual stress KW - neutron diffraction KW - computer modeling KW - welding Y1 - 2018 SN - 1221-146X VL - Vol. 63 IS - 7-8 ER - TY - GEN A1 - Bobrynina, E. V. A1 - Larionova, T. V. A1 - Koltsova, Tatiana S. A1 - Ginzburg, S. A. A1 - Michailov, Vesselin T1 - Effect of alumina addition on weld deposits microstructure at the welding of carbon steel T2 - Materials Physics and Mechanics N2 - The formation of acicular ferrite in the structure of weld deposits when welding carbon steels is often associated with the introduction of nonmetallic additives into the electrode material. Fe–alumina composite powders with alumina particles less than 1 µm were used as a filler for cored welding wire and the influence of aluminum oxide additives up to 2,5 wt.% on the structure of the welded seam was studied. It was shown that the addition of aluminum oxide to the welding wire led to the initiation of the formation of intragranular acicular ferrite in the weld deposit and to a more even distribution of hardness through the zones of weld seam. KW - acicular ferrite KW - alumina KW - welding KW - carbon steel Y1 - 2018 U6 - https://doi.org/10.18720/MPM.3812018_4 SN - 1605-8119 VL - Vol. 38 IS - 1 SP - 26 EP - 32 ER -