TY - CONF A1 - Rethmeier, Michael A1 - Bakir, Nasim A1 - Gumenyuk, Andrey T1 - Experimental study and numerical simulation of hot crack formation for novel laser weldability test N2 - Hot cracking susceptibility in laser beam welding was assessed for several stainless steels by means of the CTW test The strain rate has a significant influence on the formation of the hot crack It was possible to determine the critical strain and strain rate that led to shot crack formation A material ranking of hot cracking resistance could be made.A three-dimensional FEM using the contact element technique to simulate hot cracking during LBW under external load conditions was developed. Good agreement between the strain field measured using the DIC technique and the simulation results Susceptibility to hot cracking can be predicted by using FEM with the correct mechanical and thermo-physical material properties T2 - 8th International Conference Beam Technologies & Laser Application CY - St. Petersburg, Russia DA - 21.09.2015 KW - CTW-Test KW - Investigated materials KW - FEM study KW - Hot cracking PY - 2015 AN - OPUS4-38347 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -