Evaluation of fatigue damage using a magnetic measurement technique
Evaluation of fatigue damage using a magnetic measurement technique
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使用磁性测量技术评估疲劳损伤
DOI：
10.1109/20.800727
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
S. Biner
中科院分区：
文献类型：
--
作者：
C. Lo;F. Tang;D. Jiles;S. Biner
对0.1 wt% C Fe-C合金样品在不同应变幅值下进行了一系列应变控制疲劳试验。发现这些样品的测量矫顽力在疲劳的初始和最终阶段表现不同。在疲劳中期，发现矫顽力趋于增加，而初始磁导率和最大磁导率趋于下降。这可能与SEM观察到的表面结构的变化有关。目前的结果表明，磁滞参数与疲劳损伤的累积有关，因此可以开发一种磁性测量技术来监测钢部件的疲劳损伤。
A series of strain-controlled fatigue tests were performed on 0.1 wt% C Fe-C alloy samples under different strain amplitudes. The measured coercivity of these samples was found to behave differently in the initial and final stages of fatigue. In the intermediate stage of fatigue it was found that coercivity tended to increase, while initial and maximum permeabilities tended to decrease. This could be related to the changes in the surface structure which were observed by SEM. The present results indicate that hysteresis parameters are related to the accumulation of fatigue damage, and therefore it is possible to develop a magnetic measurement technique for monitoring fatigue damage in steel components.