Journal article
An estimation method for evaluating energy release rates of circumferential through-wall cracked pipe welds
Engineering fracture mechanics, Vol.43(3), pp.417-430
1992
DOI: 10.1016/0013-7944(92)90110-Z
Abstract
A new methodology is proposed to estimate energy release rates of through-wall cracked (TWC) ductile pipe weldments subjected to pure bending loads. It is based on the deformation theory of plasticity, the constitutive law characterized by the Ramberg-Osgood model, and an equivalence criterion incorporating the reduced thickness analogy for simulating system compliance due to the presence of a crack in weld metal. A closed form solution is obtained in terms of elementary functions for approximate evaluation of the . The method utilizes the material properties of both base and weld metals, which are not considered in the current estimation methods. It is very general and can be applied in the complete range between elastic and fully plastic conditions. Several numerical examples are presented to illustrate the proposed technique. Comparisons of results with reference solutions from the finite element method indicate satisfactory prediction of energy release rates.
Details
- Title: Subtitle
- An estimation method for evaluating energy release rates of circumferential through-wall cracked pipe welds
- Creators
- S RAHMAN - Battelle, eng. mechanics dep., Columbus OH 43201, United StatesF. W BRUST - Battelle, eng. mechanics dep., Columbus OH 43201, United States
- Resource Type
- Journal article
- Publication Details
- Engineering fracture mechanics, Vol.43(3), pp.417-430
- Publisher
- Elsevier; Tarrytown, NY; Oxford
- DOI
- 10.1016/0013-7944(92)90110-Z
- ISSN
- 0013-7944
- eISSN
- 1873-7315
- Language
- English
- Date published
- 1992
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984064107002771
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