Numerical Simulation and Experimental Verification of CMOD in SENT Specimen: Application on FCGR of Welded Tool Steel

作者：Sultan Amir^*; Pasha Riffat Asim; Ali Mifrah; Khan Muhammad Zubair; Khan Muhammad Afzal; Dar Naeem Ullah; Shah Masood

来源：Acta Metallurgica Sinica (English Letters), 2013, 26(1): 92-96.

DOI：10.1007/s40195-012-0135-z

• Tool steel
• Weld
• Single-edged notched tension (SENT)
• CMOD
• Fatigue crack growth rate (FCGR)

Single-edged notched tension (SENT) specimen is used to study the fatigue crack growth rate (FCGR) behavior of AISI 50100 steel using MTS 810. Calibration tests are run to get plots of crack mouth opening displacement (CMOD) vs. load and CMOD vs. crack length-to-width ratio with the known crack lengths. Numerical simulation is also done to try to establish a relation between crack length and CMOD. FCGR of welded and un-welded specimens are plotted against stress intensity factor range to show the effect of welding on fatigue crack growth rate of AISI 50100 steel. The experimentally obtained CMOD values are compared with values obtained by numerical simulation using ABAQUS/Standard (TM) software package. Results show that numerical values are in good agreement with experimental data for small crack lengths and lower values of applied load.

• 出版日期2013-2