Journal Published Online: 01 January 2000
Volume 28, Issue 1

A Proposal for Specimen Size Requirements in Toughness Qualification with the Weibull Stress Criterion



The specimen size requirements in toughness qualification are discussed on the basis of a statistical local fracture criterion approach. The Weibull stress criterion for cleavage fracture is applied to the constraint loss field at the crack tip described with the toughness scaling model (TSM). The proposed new model demonstrates that the TSM is a particular case for a material with a particular combination of the Weibull shape parameter, m, and the strain hardening exponent, n. Based on this model, alternative size requirements for ASTM standards are proposed.

Author Information

Miyata, T
Materials Science & Engineering, Nagoya University, Nagoya, Japan
Tagawa, T
Materials Science & Engineering, Nagoya University, Nagoya, Japan
Yang, H
Sumitomo Construction Machinery Co., Ltd., Nagoya, Japan
Pages: 4
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Stock #: JTE12076J
ISSN: 0090-3973
DOI: 10.1520/JTE12076J