【摘要】 阐述了用新型AMSLER高频疲劳试验机，结合计算机控制测定材料门槛值△Kth的新方法．该方法通过在恒应力比R下疲劳一定周次后，频率下降不超过某一特定值，从而得到门槛值△Kth.更多还原

【Abstract】 A new method of determinning the threshold value △Kth on a new typeAMSLER fatigue test system by computer control is given. By using this method, △Kthcan be obtained after the material has been fatigued a given cycles under constant stressratio R, on condition that the decreasing of frequency is less than a certain value.更多还原