✦ LIBER ✦

The treatment of thermal and residual stresses in fracture assessments

✍ Scribed by R.A. Ainsworth

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 914 KB
Volume: 24
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(86)90008-1

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✦ Synopsis

The behaviour of a crack under combined mechanical and thermal/residual loads is described in terms of a reference stress or equivalent mechanical loading. The reference stress can be readily established from a knowledge of the stress intensity factor for the thermal/residual load, the magnitude of the mechanical load, and the material stress-strain curve. The result enables the Jintegral to be evaluated and is also used to define a procedure for the inclusion of thermal/residual stresses in the CEGB defect assessment method (R6). In particular, a detailed procedure is given for treating thermal/residual stresses in recent revisions of R6 which cater for structures made of materials which strongly work-harden.

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