Further results in J and CTOD estimation procedures for SE(T) fracture specimens - Part I: Homogeneous materials

Abstract This study provides further developments of the evaluation procedure for J and CTOD in SE(T) fracture specimens based on plastic η -factors and load separation analysis. Non-linear finite element analyses for plane-strain and 3-D models provide the relationship between plastic work and crack driving forces which define the η -values. Further analyses based on the load separation method define alternative η -values for the analyzed specimen configurations. Overall, the present results provide improved estimation equations for J and CTOD as a function of loading condition (pin load vs. clamp ends), crack geometry and strain hardening properties.

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