铁磁材料构件的应力分析和磁记忆检测  

Stress Analysis and Magnetic Memory Testing of Ferromagnetic Items

作　　者：胡智 任吉林[2] 

机构地区：[1]江西省锅炉压力容器检验研究所,南昌330029 [2]南昌航空工业学院测控系,南昌330034

出　　处：《无损检测》2005年第7期355-358,367,共5页Nondestructive Testing

基　　金：国家质检总局青年科技基金项目(Q01-10);航空科学基金资助课题(03G56001)

摘　　要：应用ANSYS软件对平板中心裂纹构件的应力状态进行有限元分析,不仅得出了符合J积分理论解的精度较高的分析结果,并且通过对加载构件表面漏磁场的测量,验证了应力集中与磁记忆效应之间的规律,进一步探讨了磁记忆检测在铁磁构件损伤预诊断中应用的可行性。The stress status of the flat plate with a crackle in its center was analyzed in terms of finite element method by software ANSYS. The results in accord with theoretical solution of J integration were presented, the magnetic flux leakage field of the plate was measured, and the regulation between stress concentration and magnetic memory effect was proved. The feasibility of applying magnetic memory method to diagnosing the damages in ferromagnetic items was studied.

关 键 词：铁磁构件 磁记忆检测 有限元分析 裂纹 应力集中 

分 类 号：TG115.28[金属学及工艺—物理冶金]