超音波疲れ試験機 : 第2報, 耐久限度の高い材料の試験法

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タイトル別名
  • Fatigue Tests of Metals at Ultrasonic Frequency : 2nd Report, For Materials Having High Endurance Limits
  • チョウオンパ ツカレ シケンキ 2

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抄録

In the ultrasonic fatigue machine previously reported, it was necessary to adopt the test pieces contracted in the mid portion in order to induce the higher stress there, and a graphical method was required for the estimation of the value of stress induced. In this paper, the analysis of vibration of the contracted test piece at resonance condition is developed and some experiments related to this analysis are carried out. From this, the stress estimation can be easily and correctly done without the graphical complexity, if an oscillatory amplitude of only one point on the test piece is measured. As an application of this analysis, are obtained S-N characters for bearing steel and copper.

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