Accession Number:

AD0620393

Title:

PLASTIC STRAINS AND ENERGY DENSITY IN CRACKED PLATES. PART I. EXPERIMENTAL TECHNIQUE AND RESULTS,

Descriptive Note:

Corporate Author:

PHILCO RESEARCH LABS NEWPORT BEACH CALIF

Personal Author(s):

Report Date:

1964-01-01

Pagination or Media Count:

34.0

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 enclaves. 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. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE