Development of a Push-Pull Fatigue Testing Machine under High Pressure, and the Results of Preliminary Fatigue Tests
Development of a Push-Pull Fatigue Testing Machine under High Pressure, and the Results of Preliminary Fatigue Tests
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高压推拉疲劳试验机的研制及初步疲劳试验结果
DOI：
10.2472/jsms.21.772
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发表时间：
1972
期刊：
影响因子：
--
通讯作者：
Keiichi Yaji
中科院分区：
文献类型：
--
作者：
K. Ohji;K. Ogura;Kazuo Sugimoto;Keiichi Yaji
研制了一台6000 kg/cm ~ 2的高压推拉疲劳试验机。利用该试验机，对无氧铜、5005铝合金和S35 C碳钢在4000 kg/cm ~ 2的静水压力下进行了低周疲劳试验。随着环境压力的增加，无缺口疲劳强度略有增加。在0和3000 kg/cm ~ 2的环境压力之间，无氟碳氢化合物铜的缺口疲劳强度没有观察到明显的差异。无缺口无氧铜试样的扫描电镜断口显示，在3000 kg/cm ~ 2和零环境压力下疲劳断裂试样的条纹区没有明显的差异。
A push-pull fatigue testing machine under high pressure up to 6000kg/cm2 was developed. Using this machine, the preliminary fatigue tests in the low-cycle fatigue range were conducted under the load-cycling conditions with OFHC copper, 5005 Al alloy and S35C carbon steel under hydrostatic pressures up to 4000kg/cm2. The unnotched fatigue strength showed a slight but definite increase with increasing ambient pressure. No discernible difference was observed in the notched fatigue strength of OFHC copper between 0 and 3000kg/cm2 ambient pressure. The scanning electron fractograph of unnotched OFHC copper specimens revealed no apparent difference in the striated regions of fatigue-fractured specimens under 3000kg/cm2 and zero ambient pressure.