アルミニウム薄膜の疲労すべり変形を利用した疲労ゲージに関する基礎的研究 : 第5報, 振幅および平均応力が変動する場合の粗さ増加

概要

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The surface roughening phenomenon of aluminum foil is examined under variable stress, and the controlling parameter that dominates the roughness is clarified. It is found that constant mean stress does not affect surface roughness. When mean stress varies, however, mean stress causes surface roughening. In such a case, the range-pair counting method is appropriate, and the equivalent stress represented by (Σσ^_iN_i/ΣN_i)^<1/α> dominates surface roughness, where σ_i and N_i are stress amplitude and the number of stress cycles counted by the range-pair method, and a is a material factor. It is concluded that the fatigue gauge made of aluminum foil can evaluate the equivalent stress with high accuracy.
一般社団法人日本機械学会の論文
1991-10-25