高温下直流电位法测量裂纹长度的应用
APPLICATION OF DC CURRENT METHOD FOR CRACK LENGTH MEASUREMENT IN HIGH TEMPERATURE
摘 要
介绍了用直流电位法测量疲劳裂纹长度方法的基本原理、实现方法及所需配置的仪器，并对有关影响因素作了分析。该测量系统主要用于高温下的各种材料在恒幅载荷下的疲劳裂纹扩展和门槛值试验中的疲劳裂纹长度的测量，可提高测量疲劳裂纹长度的自动化水平。
疲劳裂纹长度
高温
Dc current method
Fatigue crack length
High temperature
Abstract
A measurement method for crack length is described in this paper. Based on this method, fatigue crack growth lenglh under constant ampliftude loading and crack length of threshold behavior all can be determined at high temperature. Automatic level of measurement crack length is improved.
中图分类号 TB302.1
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收稿日期 2006/2/13
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备注王亮(1975-)，男，工程师。
引用该论文: WANG Liang,DING Chuan-fu. APPLICATION OF DC CURRENT METHOD FOR CRACK LENGTH MEASUREMENT IN HIGH TEMPERATURE[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2006, 42(9): 454～456
王亮,丁传富. 高温下直流电位法测量裂纹长度的应用[J]. 理化检验－物理分册, 2006, 42(9): 454～456
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参考文献
【1】Coffin L F. Notch Fatigue Crack Initiation Studies in a High Strength Nickel Base Super Alloy[J]. Engineering Fracture Mechanics, 1987,28(5):485-503.
【2】Johnson H H. Calibrating the Electric Potential Method for Studying Slow Crack Growth[J]. Materials Research & Standards, 1965,5(9):442-445.
【3】张寿柏.交流电位法测量表面裂纹深度及其仪器的研究[J].上海交通大学学报, 1984,18(1):1-8.
【4】Schwalbe K H, Hellmann D. Application of the Electrical Potential Method to Crack Length Measurements Using Johnson′s Formula[J]. American Society for Testing and Materials, 1981,9(3):218-221.
【5】ASTM E647-95, Standard Test Method for Measurement of Fatigue Crack Growth Rates[S].
【2】Johnson H H. Calibrating the Electric Potential Method for Studying Slow Crack Growth[J]. Materials Research & Standards, 1965,5(9):442-445.
【3】张寿柏.交流电位法测量表面裂纹深度及其仪器的研究[J].上海交通大学学报, 1984,18(1):1-8.
【4】Schwalbe K H, Hellmann D. Application of the Electrical Potential Method to Crack Length Measurements Using Johnson′s Formula[J]. American Society for Testing and Materials, 1981,9(3):218-221.
【5】ASTM E647-95, Standard Test Method for Measurement of Fatigue Crack Growth Rates[S].
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