测试技术学报2012，Vol.26Issue(5)：369-376,8.DOI:10.3969/j.issn.1671-7449.2012.05.001
铁磁性材料的力磁效应机理探讨与实验研究
Research on Mechanism and Experiment About Stress-magnetism Effect for Ferromagnetic Materials
摘要
Abstract
A concise stress-magnetism model is discussed on the basis of sablik-jiles-atherton magneto-mechanical hysteresis model and spontaneous magnetization principles, the theory of magnetic flux leakage measurements for ferromagnetic materials is analyzed under the influence of applied stress and earth magnetic field. About the magnetic leakage field on the specimen surface, the phenomenon is that the tangential component increases dramatically and the normal has zero-crossing point at the stress concentration zone. Combined with the elastic-plastic analysis for specimen, the magnetic flux leakage signal will change remarkably, namely the gradient of the signal curve enlarged obviously. The experiments of measuring magnetic flux leakage signal for Q235A steel under different stress state were performed. The result shows that magnetic flux leakage signal increases with stress in elastic range, which has good agreement with the theory. This work will contribute to study stress- magnetism relationship and present basic data for detect latent defects in metal magnetic memory.关键词
磁记忆/力磁效应/有效场/漏磁场/自由能Key words
magnetic memory/ stress-magnetism effect/ effective field/ leakage magnetic field/ free energy分类
矿业与冶金引用本文复制引用
郭国明,丁红胜,谭恒,石志萍..铁磁性材料的力磁效应机理探讨与实验研究[J].测试技术学报,2012,26(5):369-376,8.基金项目
中央高校基础科研业务费基金(FRF-BR-09-005A)和国家自然科学基金(61072082)资助项目 （FRF-BR-09-005A）
