摘要
用信号处理的方法研究了铝合金及其复合材料塑性应变能在疲劳过程中的变化,得出循环疲劳周数与塑性应变能之间的幂函数关系,进而分析了用线性累积损伤公式来估算疲劳寿命常出现较大误差的原因.
In this paper, the changes of the plastic strain energy of the Al-alloys and their composites in fa-tigue are investigated by modern signal analysis. The relation of the exponential function between fatigue cycles and plastic energy is given. The accuracy of fatigue life predicted by linear cumulative damage is analysed.
出处
《理化检验（物理分册）》
CAS
1998年第6期20-21,共2页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
基金
福建省自然科学基金
