压力容器2017，Vol.34Issue(12)：8-14,7.DOI:10.3969/j.issn.1001-4837.2017.12.002
基于金属磁记忆效应30CrMo钢应力集中试验研究
Experimental Study on Stress Concentration of 30CrMo Steel Based on Metal Magnetic Memory
摘要
Abstract
Aiming at the problem of stress concentration in engineering application,the three-dimensional metal magnetic memory detection system was used to test the 30CrMo steel plate samples under different load conditions.The tangential composition Hp (xy) and the vertical component Hp (z) were analyzed and the correlation gradient change the value of the situation.The results show that the magnetic signal amplitude of sample surface firstly increases,then decreases and then increases with the increase of the load,and there is a good agreement between the magnetic signal and its gradient eigenvalue.In addition,the change of the area equivalent ratio of the Lissajous-figure closed area under different stress concentrationis discussed,which provides the basis for the study of stress concentration and quantitative evaluation of ferromagnetic materials.关键词
磁记忆检测/应力集中/梯度Key words
magnetic memory detection/stress concentration/gradient分类
机械制造引用本文复制引用
兰清生,张路根,刘伟成,汤新文,张琦,宋凯..基于金属磁记忆效应30CrMo钢应力集中试验研究[J].压力容器,2017,34(12):8-14,7.基金项目
国家公益性行业科研专项(201510066) （201510066）
航空科学基金(GA201708257) （GA201708257）
无损检测技术教育部重点实验室开放基金(EW201708252) （EW201708252）
