Fracture capacity of modern pipeline girth welds with 3D surface cracks under extreme operating conditions
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- 作者：Tse-Ven Steven Chonga ; b ; steven.chong@dnvgl.com" class="auth_mail" title="E-mail the corresponding author ; Shashi Bhushan Kumarb ; Man On Laia ; Wai Lam Loha
- 关键词：High pressure/high temperature (HP/HT) ; Sour service ; Girth weld imperfections ; CRA clad ; Finite element method
- 刊名：Engineering Fracture Mechanics
- 出版年：2015
- 出版时间：September 2015
- 年：2015
- 卷：146
- 期：Complete
- 页码：139-160
- 全文大小：5639 K
文摘
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FEA to assess the fracture capacity of modern pipeline girth welds with cracks.
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Parameters include: temperature, environment, crack location and weld strength mis-match.
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Crack driving force is lower for under-matching than over-matching welds.
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Analytical method by BS7910 code was more conservative than FEA for deeper cracks.
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Recommendations for ECA methodology is provided based on the results.