An Estimation Model for the Application of the J-Integral

JA Begley; JD Landes; WK Wilson

doi:10.1520/STP33139S

SYMPOSIA PAPER Published: 01 January 1974

STP33139S

An Estimation Model for the Application of the J-Integral

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A technique is developed for estimating the J-integral for the case of a crack imbedded in a uniform strain field. Use of this technique provides a possible simple engineering method for applying the J-integral fracture criterion to small cracks imbedded in a plastic zone. Reliability of structural components could be evaluated without the need for sophisticated elastic-plastic stress analysis.

The application of this model to the case of a small crack emanating from a stress concentration illustrates how an attempt to extend linear elastic fracture concepts may lead to erroneous results.

Author Information

Begley, JA

Westinghouse Research Laboratories, Pittsburgh, Pa.

Landes, JD

Westinghouse Research Laboratories, Pittsburgh, Pa.

Wilson, WK

Westinghouse Research Laboratories, Pittsburgh, Pa.

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Details

Developed by Committee: E08

Pages: 155–169

DOI: 10.1520/STP33139S

ISBN-EB: 978-0-8031-4645-7

ISBN-13: 978-0-8031-0361-0

An Estimation Model for the Application of the J-Integral

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