銅めっきはく疲労ゲージに関する基礎的研究 : 第3報, 成長粒子密度を利用した等価応力の評価

概要

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The possibility of measuring the magnitude and number of stress cycles of the machine parts subjected to service loading was examined by the fatigue gauge, made of electroplated copper. It is found that the recrystallized grains formed by cyclic stresses in the foil can be utilized as a measure for stress determination under both constant and variable amplitude stresses. This method is shown enough accurate to evaluate constant stress amplitude. In case of variable stress amplitude, the fatigue damage is correlated with that of the constant stress amplitude in terms of a equivalent stress. This equivalent stress is expressed by (Σ σ^α_iN_i/Σ N_i)^<1/α>, where σ_i, N_i. and α are the stress amplitude, the number of stress cycles of σ_i and the material constant of the gauge, respectively.
一般社団法人日本機械学会の論文
1992-02-25