アルミニウム薄膿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4報, 応力振幅が変動する場合における粗さ増加特性

概要

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The surface roughening phenomenon of aluminum foil under variable amplitude stress is examined in order to use the foil as the fatigue gauge to detect the total amount of cyclic stress. It is found that the effect of load history on the surface roughening phenomenon can be observed when the stress amplitude varies simply as in two-level single block loading. However, it is negligible small when the stress amplitude varies many times as in two-level multiple loading. In such a case, the stress evaluated from the surface roughness using the aluminum foil fatigue gauge is represented by (Σσ^α_iN_i/ΣN_i)^<1/α> with sufficient accuracy, where σ_i, N_i, and a are the stress amplitude, the number of stress cycles of σ_i and the material factor, respectively.
一般社団法人日本機械学会の論文
1991-10-25