The application of constraint based fracture mechanics to engineering structures
Book
·
OSTI ID:122623
- Univ. of Glasgow (United Kingdom). Dept. of Mechanical Engineering
Elastic-plastic crack tip fields can be characterized by two parameters, J and a parameter (T/Q) which describes crack tip constraint (Betegon and Hancock 1991, O`Dowd and Shih 1991). This forms the foundation of a constraint based fracture mechanics in which toughness is expressed as a function of constraint in the form of a J-(T/Q) locus. The enhanced toughness associated with shallow cracks and defects can be used in a systematic manner by constraint matching, and implemented through a simple modification to a Failure Assessment Diagram. This methodology enables the conservatism associated with the use of deeply cracked fracture toughness measurements to be relaxed. In the present work these methods have been applied to a tubular welded joint such as those found in offshore structures.
- OSTI ID:
- 122623
- Report Number(s):
- CONF-950740--; ISBN 0-7918-1335-5
- Country of Publication:
- United States
- Language:
- English
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