ボイラ鋼管の弾塑性破壊靱性

概要

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It becomes important problem to obtain the Elastic-Plastic Fracture Toughness J_<in> of high pressure boiler Tube, in order to avoid brittle fracture at the time of water pressure proof tests. In previous study, J_<in> tests were able to be carried by using the small size Arc specimens (50mm in outer diameter). In this study, the specimen thickness was needed to be more than 6mm, to keep the plane strain fracture toughness (STBA 12). And elastic-plastic fracture toughness J_<in> of welding HAZ (STBA 24) were tested. According to these tests, J_<in> test value did not almost differ between STBA 24 material and welding HAZ material.
一般社団法人日本機械学会の論文
2004-07-25