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工程设计学报
工程设计学报  2002, Vol. 9 Issue (4): 198-202    
工程设计理论、方法与技术     
金属材料韧性损伤测量的电阻法
 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
Resistance method of ductile damage measurement of metallic materials
 SUN  Bin-Xiang1, GUO  Yi-Mu2
1． Departm ent of Civil Engineering，Shaoxing College of Arts and Sciences，Shaoxing 312000，China；
2．M echanics Department，Zhejiang University，Hangzhou 310027，China
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摘要： 研究了考虑塑性变形的基于电阻变化的金属材料韧性损伤测量公式，对A3低碳钢拉伸试样的韧性损伤进行TNI!．结果表明，电阻法的测量值与弹性模量下降法的结果相一致．指出用电阻法测量金属材料韧性损伤应考虑试样长度和横截面尺寸的影响；电阻法的可靠性在于试样低值电阻的精确测量．
关键词： 金属材料;  拉伸损伤;  韧性损伤;  电阻测量    
Abstract: U nder considering plastic deform ation，the form ula of dam age m easurem ent on variation of the electrical resistance was studied． Tensile ductile damage on A3 mild steel specimen was evaluated．The results show that the predictions by variation of the resistance accord with that of the elasticity modulus change．It is presented out that the effect on the plastic deform of specim en length and cross-section must be considered for the m etal m aterial ductile dam age measurement by variation of the resistance．A nd its reliability is based on accurate m easuring of the specimen low electrical resistance．
Key words: metallic materials    tensile damage    ductile damage    resistance measurement
出版日期: 2002-10-28
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引用本文:

孙斌祥, 郭乙木. 金属材料韧性损伤测量的电阻法[J]. 工程设计学报, 2002, 9(4): 198-202.

SUN Bin-Xiang, GUO Yi-Mu. Resistance method of ductile damage measurement of metallic materials[J]. Chinese Journal of Engineering Design, 2002, 9(4): 198-202.

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https://www.zjujournals.com/gcsjxb/CN/    或    https://www.zjujournals.com/gcsjxb/CN/Y2002/V9/I4/198

[1] 孙斌祥, 郭乙木. 考虑电阻率变化的电阻法预测金属材料剩余寿命[J]. 工程设计学报, 2001, 8(2): 81-84.