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A method for the strain rate dependent correction for control type of fatigue tests

机译:一种对控制类型疲劳试验的应变速率依赖性校正的方法

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摘要

In this paper, we investigate the influence of the control type of cyclic tests on the lifetime of the specimens tested. We present a strain rate dependent method to compare results of displacement controlled fatigue tests to results of force controlled fatigue tests. This method is successfully used to explain longer lifetimes observed in ultrasonic fatigue tests compared to conventional fatigue tests on specimens manufactured from quenched and tempered SAE 4150. This method may also be used to normalize displacement controlled fatigue tests in conventional testing, which allows parallel testing of multiple specimens in a single testing machine.
机译:在本文中,我们研究了对试验寿命的循环试验对控制类型的影响。我们提出了一种应变率依赖性方法,以比较位移控制疲劳试验的结果,以对力控制疲劳试验的结果进行比较。与由淬火和回火SAE 4150制造的样本的传统​​疲劳试验相比,该方法成功地解释了超声疲劳试验中观察到的更长的寿命。该方法还可用于标准化常规测试中的位移控制的疲劳试验,这允许并行测试单个测试机中的多个标本。

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