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工程设计学报
Chinese Journal of Engineering Design  2001, Vol. 8 Issue (2): 81-84    DOI:
    
Estimation of Remaining Life of Metallic Materials by Electrical Resistance Method Considering Variable Resistivity
 孙斌祥1, 郭乙木2
1.绍兴文理学院土木工程系,浙江绍兴312000; 
2.浙江大学力学系,浙江杭州310027
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Abstract   Considering variable resistivity, the formula of damage variable by means of the electrical resistance is obtained. The two models—homogeneous damage omitting resistivity changes and inhomogeneous damage considering variable resistivity—are compared. The results show that the predictions of resistance accord with the test data. And the influence of damage on resistivity of metal materials is discussed. The remaining life formula of the fatigue damage of metal materials is obtained.

Key words：  nonlinear cumulative fatigue damage      resistance measurement      resistivity      life prediction     
Published: 15 June 2001
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SUN Bin-Xiang
GUO Yi-Mu
Cite this article:

SUN Bin-Xiang, GUO Yi-Mu. Estimation of Remaining Life of Metallic Materials by Electrical Resistance Method Considering Variable Resistivity. Chinese Journal of Engineering Design, 2001, 8(2): 81-84.

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https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2001/V8/I2/81


考虑电阻率变化的电阻法预测金属材料剩余寿命

推导了考虑电阻率变化的用电阻表征的损伤变量公式,并对不考虑电阻率变化的均匀损伤和考虑电阻率变化的不均匀损伤两种模型进行了比较,结果表明电阻的预测值与实验数据相符合.并讨论了损伤对金属材料电阻率的影响.给出了金属材料疲劳损伤的剩余寿命预测公式.

关键词： 非线性累积疲劳损伤,  电阻测量,  电阻率,  寿命预测 
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