EXPERIENCES WITH STANDARDISED ELASTO-PLASTIC FRACTURE MECHANICS PARAMETERS TESTING AND CALCULATION

A standardized evaluation of elasto‐plastic fracture mechanics (EPFM) parameters, such as J‐integral [kJ/mm2] or crack‐tip opening displacement (CTOD [mm]) resistance curves, may be performed only on appropriate and specialized testing equipment. Furthermore, calculation of corresponding resistance curves, as defined in respective testing standard, e.g. ASTM E1820, present relatively challenging and complicated task. Therefore this paper present basic aspect of experimental testing and further calculation procedure of EPFM resistance curves. Particular attention is focused on elastic compliance, C [mm/kN], which is considered as key and critical parameter for reliable results. Finally, as result of demonstrative procedure, a typical EPFM resistance curves for selected high‐strength structural steel are provided..