破壊靭性を考慮した船体用鋼板の低温使用に関する一考察

概要

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In the previous paper, the Use of Material Grades for Hull Structural Members (plate thickness≦80mm), in which the allowable crack lengths corresponding to the critical plate thicknesses at 0℃ were reasonable, was proposed. In this paper, based on what has been done before, for the application of ship hull steel plates at low temperature, that is, 0℃〜-50℃, the critical plate thicknesses of ship hull steel plates of various material grades are determined with considering fracture toughness, for example: (1) Both the mild steels and high-tensile steels can be applied to use as the materials for the hull structural members in material class I sufficiently until -50℃. (2) For the hull structural members of material grades E and FH in material class II, the critical plate thickness is up to 50mm at -30℃.
社団法人日本船舶海洋工学会の論文
1999-03-29