金属磁记忆检测技术研究进展

Research progress of metal magnetic memory testing technology

金属磁记忆(MMM)检测技术是利用金属磁记忆效应来检测部件应力集中部位的快速无损检测方法。从机理、应力定量化、缺陷定量化和应用发展4个方面分析其国内外研究现状。结果表明:金属磁记忆检测的理论研究和定量化评价还不够完善,理论建模、损伤判据以及自漏磁信号参数的识别仍处于发展阶段;未来发展方向是利用金属磁记忆检测早期损伤诊断的优势,研究与其他检测方法相结合的综合检测方法。

Metal magnetic memory(MMM)testing technology is a fast nondestructive testing method which can detect the stress concentration of components by using the effect of MMM.For this technology,research status at home and abroad is analyzed from four aspects which are mechanism,stress quantification,defect quantification and application development.The results show that the theoretical research and quantitative evaluation of MMM testing are not perfect.And theoretical modeling,damage criterion and identification of self-leakage magnetic signal parameters are still in the development stage.The future development direction is to use the advantages of MMM testing for early damage diagnosis,and to study comprehensive testing methods combines with other testing methods.