Plastic strains and energy density in cracked plates - Part I-experimental technique and results To facilitate presentation of data and comparison to available theory, this paper is divided into two parts: the first is primarily concerned with experimental procedure and results; and the second is concerned with correlation of data to elastic theory and a discussion of ductile fracture in light of

William W. Gerberich

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Abstract

A technique is presented which allows separation of the principal plastic strains within an enclave at a crack tip in relatively thin plates. For plates with a number of crack lengths, several degrees of tensile loading are applied to five ductile materials with widely varying mechanical properties. Principal plastic strain distributions, plastic distortional strain energy density and total plastic energy are determined within the resulting plastic encalves. It is shown that the degree of loading and strain hardening greatly affect the principal plastic strain and energy density distributions and that this is reflected in the amount of strain energy that can be plastically absorbed at a crack tip.

Original languageEnglish (US)
Pages (from-to)335-344
Number of pages10
JournalExperimental Mechanics
Volume4
Issue number11
DOIs
StatePublished - Nov 1 1964

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