A method of assessing the fracture stability of high strength material components subjected to history dependent loading is addressed. A question of using a far field parameter J for cracks subjected to the history dependent loading is raised. Suggesting a near crack parameter T* to be used, numerical investigations of cracked specimens that are unloaded and reloaded after an extensive plastic flow had occurred at the crack-tip were performed, and behavior of J and T* during the one and a half cycle loading is investigated. The results show the consequence of overestimating the material fracture integrity depending on what parameter is to be selected for assessing history dependent crack problems.
|Number of pages
|American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
|Published - 1989
|ASME Pressure Vessels and Piping Conference 1989 - Honolulu, HI, USA
Duration: Jul 23 1989 → Jul 27 1989