Fatigue Strength of Plain and Notched Bars under Pulsating Load Varying in Two Stages

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概要

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• Fatigue lives of plain and notched specimens of a heat treated carbon steel are investigated under pulsating load varying in two stages. The experiments cover the cases where the stress value of the first stage is both higher and lower than that of the second stage, the stress difference between the first and second stages is varied and the stress cycle ratio in the first stage is varied. According to the result of the experiment, Miner's hypothesis seems to be effective, if scatter of fatigue lives is taken into consideration, although some exceptions are found in which cumulative cycle ratio is increased to some extent. For these exceptions, however, Miner's hypothesis gives lives on the safe side in design calculations.

• 一般社団法人日本機械学会の論文

著者

• Kawada Yuichi

  Tokyo Metropolitan University

• Kawada Yuichi

  Tokyo Metropolitan College Of Engineering

関連論文

• Some Experiments on the Fatigue Life under Double and Triple Stresses
• On the Crack Propagation by Cyclic Stresses below the Fatigue Limit in Specimens with a Pinhole
• Fatigue Strength of Plain and Notched Bars under Pulsating Load Varying in Two Stages
• On Axially Symmetrical Residual Stresses in Bars with Longitudinally Nonuniform Stress Distribution
• Effects of the Stress Amplitudes Below the Fatigue Limit on Fatigue Lives in the Cylindrical Specimens Having a V-shape Groove
• The Crack Propagation by the Stress Amplitude below the Fatigue Limit
• A Study on the Residual Stress Distributions by Turning

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