疲労過程における履歴エネルギの試験片温度上昇の関係

概要

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This study was to investigate the relation between the stress-strain hysteresis energy and. the temperature rise of a specimen during the usual fatigue test. The experiment was carried out using S50C steel, and the simultaneous measurements were made on the temperature rise and the hysteresis energy of the specimen. The results were compared with the solution obtained by solving the Fourier's equation of heat transfer. The conclusions obtained were as follows : (1) The hysteresis energy W is completely transformed into heat energy, which contributes to the temperature rise of the specimen. The temperature rise θ is given by the equation as a first approximation : θ= αW_f, where f is the testing frequency and a is a geometrical parameter determined by the shape of the specimen and the gripping condition. (2) The generation of hysteresis loop is not confined on the surface layer but it is a bulk phenomenon covering the total volume of the specimen.
社団法人日本材料学会の論文
1977-04-15