Assessment of high amplitude cyclic crack growth using a near crack parameter

F. W. Brust, M. Nakagaki, S. N. Atluri

Research output: Contribution to journalConference article

Abstract

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.

Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume166
StatePublished - 1989
EventASME Pressure Vessels and Piping Conference 1989 - Honolulu, HI, USA
Duration: Jul 23 1989Jul 27 1989

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