【摘要】 根据磁致伸缩效应和受力变形中磁的各向异性特征,利用特殊研制的磁探测器和信号处理系统,研究材料疲劳过程中磁信号变化的特点,在一定程度时,观察的疲劳磁信号出现突变,该突变点与材料疲劳过程中一定的塑性变形量相对应。将此方法加以系统和标准化后,可对工程应用中的材料和构件的疲劳寿命进行动态预测。更多还原

【Abstract】 The magnetostriction methode which is bases on. the magnetostriction effect and anisotropic magnetical beviour of the ferromagnetic determination is presentted. The magnetic signal response during fatigue is examined by the special-made probe and the data process system. It has been found that a sudden signal change occurs at certain fatigue level which is correspoending to the certain level of plastic deformation. It is sure that after systematic standardization the magnetostriction method can be applied to the fatigue life estimate of the engineering materials and the structure members.更多还原