鋼管の弾塑性破壊靭性

概要

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The strength evaluation of ductile and brittle fracture characteristics of high pressure steel tubes have to be comfirmed for the hydraulic pressure tests. The elastic-plastic fracture tough-ness;J_<in> tests were carried out with the small size arc-shape specimens from 2 kinds of steel tubes of different materials. The new tubes were made in several years before, and used tubes were made in 30 years before. (STBA 12, the chemical compositions are different from each other and used tubes might have the creep damage under 480℃, 2×10^5 hours in boiler super heater). And J_<in> characteristics were discussed on these rusults of elastic-plastic fracture toughness test.
一般社団法人日本機械学会の論文
2000-04-25