球状黒鉛鋳鉄の弾性係数と黒鉛の弾性効果

概要

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The elastic effect of graphite on elastic moduli of spheroidal graphite cast iron, that is related to fatigue strength, was studied by theoretical and experimental procedures. The equations for elastic moduli of spheroidal graphite cast iron were obtained theoretically and the elastic moduli and fatigue limits of spheroidal graphite cast iron were measured. The following results were obtained. (1) By the elastic effect of graphite, in the case of spheroidal graphite cast iron, the reduction ratio of the maximum stress of graphite boundary ranged from 1.0 to 1.2. (2) The elastic effects of graphite on the elastic moduli and the fatigue limit are approximately equal. Therefore, the elastic effect of graphite on the fatigue limit can be predicted nondestructively by measurement of the elastic modulus.
一般社団法人日本機械学会の論文
1989-01-25