Journal of the Korean Society of Safety (한국안전학회지)
- Volume 16 Issue 3
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- Pages.1-6
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- 2001
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- 1738-3803(pISSN)
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- 2383-9953(eISSN)
A Study on the Fatigue Crack Growth Behaviour for the Welded Configuration in Pressure Vessel Stiffener
압력용기 보강재의 용접 형태에 따른 피로균열성장 거동에 관한 연구
Abstract
The study is to investigate the influence on the fatigue crack growth behaviors for the welded configuration in pressure vessel stiffener. In order to perform this goal, the automatic welded specimens were prepared. The material is ASTM A516 grade 60 steel used in pressure vessel mainly. In skip welding of pad-on-plate, continuous fillet welding and PWHT specimen, fatigue crack is generally initiated at the starting and end old toe zone, and ruptured at the starting old toe zone. The fatigue life of pad-on-plate of the continuous fillet welding specimen is larger than that of pad-on-plate skip fillet welding specimen about 85% under low load, about 20% under high load and less than that of two-pad continuous fillet welding specimen about 85%. In da/dN-
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