繰返熱応力に対する耐熱材料の強度に関する研究(第1報熱疲労試験機ならびに試験結果)

概要

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The machinery part which is to be exposed to a high temperature is designed on the basis of creep strength, creep rupture strength and high temperature fatigue strength. However, in the design of jet engine part and other machinery part as well as gas turbine for naval vessels subject to temperature fluctuation because of many start-and stops, the above data are not sufficient, and data on cyclic thermal stress are required. This is an interim report on the tests we have been making on three kinds of heat resisting material by means of thermal fatigue test apparatuses manufactured to meet this requirement. The test apparatuses used are indirect heating thermal cycling test apparatuses, direct heating thermal cycling test apparatuses and a high temperature constant strain cycling test apparatus ; the indirect heating thermal cycling test apparatus is mainly used at present. It has been found from the tests that thermal fatigue strength depends to a great extent on heat treatment condition of material, and has no relation with creep rupture strength.
社団法人日本材料学会の論文
1960-02-15