加工硬化した鋼材の疲労(第3報)

概要

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In the previous works, the fatigue limits under the tension-compression, or bending stresses were studied about specimens of usual carbon steel (0.22%C) after plastically deformed by statical tensile, or compressive stresses. In this paper, the torsional fatigue limits were studied in the same. way as in the previous works. Arranging the experimental results by the absolute values of natural strain corresponding to the pre-working stresses, the fatigue limits changed similarly both for tensile and compressive pre-working. Comparing with the annealed states, the fatigue limits decreased few percentage for small strain, and then increased about 15-20% for large strain. This tendency seemed to be similar to that of the proportional limits for torsion, and also to those of the fatigue limits for tension-compression, or bending stresses. (Received November 28, 1951)
宇宙航空研究開発機構の論文
1951-12-30