实验时间和费用的制约排除了用常规的疲劳试验机测试结构材料在107周循环以上的疲劳行为.一种可能是要求使用更高频率来加速试件的周期加载.有幸的是,现在已经有了超声疲劳实验方法(频率介于15～30 kHz).这是一种可靠的可以进行109循环以上的疲劳试验方法.本文着重从加速超声疲劳试验系统的发展,多种材料及条件下的实验研究结果及其重要结论作了概述性介绍与讨论.
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