322 アルミニウム鋳造合金の疲労限度信頼性の予測について(GS10 疲労33)

概要

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In this paper, a quantitative prediction method for the fatigue limit reliability of metal with different sorts of inhomogenities is proposed. The method is based on the stress-strength model which consists of "statistical characteristics of hardness in a small region" and "statistical characteristics of a mechanical condition in the small region containing the defect under a cyclic stress". The method was applied to the aluminum cast alloy JIS AC4B-T6, which has eutectic Si, Fe compound and porosity in the material. The fatigue strength at 10^7 stress cycles was defined as the fatigue limit. Rotating bending fatigue tests of plain specimens were also carried out. The validity of the present method was confirmed by comparing analyzed results with experimental results.
一般社団法人日本機械学会の論文
2005-11-03