Toughening analysis for warm prestressing

Warm prestressing of a cracked structure can result in an apparent elevation of its fracture toughness at lower temperature. In this paper, Chell's theory is re-examined, and it is found that the J e-integral defined by Chell should be reformulated. As a new control parameter the intergal J ̄ w...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 1991, Vol.48 (1), p.1-8
Main Authors: Fan, Xuejun, Yu, Shouwen
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical engineering. Machine design
Steel design
Steel tanks and pressure vessels
boiler manufacturing
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Summary:Warm prestressing of a cracked structure can result in an apparent elevation of its fracture toughness at lower temperature. In this paper, Chell's theory is re-examined, and it is found that the J e-integral defined by Chell should be reformulated. As a new control parameter the intergal J ̄ w is proposed to explain the warm prestressing phenomenon. By comparison with published warm prestressing data, the J ̄ w-integral is more available.
ISSN:0308-0161
1879-3541
DOI:10.1016/0308-0161(91)90053-5