期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 498, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2019.166087
关键词
Yield strength; Incremental permeability; Non-destructive test
资金
- National key research and development program Development of major scientific instruments and equipment [2017YFF0107304]
- National key research and development plan materials manufacturing and laser manufacturing [2016YFB1100205]
- Special scientific instrument development of Ministry of Science and Technology of China [2016YFF0103702]
- National Natural Science Foundation of China [61527803]
- School Open Foundation of Nanjing University of Aeronautics and Astronautics [kfjj20180315]
- Open Foundation of Key Laboratory of Ministry of Industry and Information Technology Nondestructive Detection and Monitoring Technology for High Speed Transportation Facilities
Tensile test is one of the most widely used testing methods to measure the yield strength of the processed cold-rolled steel sheets due to its credible results. This testing method is destructive and time-consuming so it can only be used to detect the target parameters on the materials in the same batch. To solve this problem, an online and nondestructive testing device based on incremental permeability (IP) is proposed. IP is related to the reversible domain movements of ferromagnetic materials during the period of dynamic magnetization. This paper analyzed the relationship among IP, eddy-current (EC) impedance and microstructure, and discovered a new IP feature that indicates materials' average grain size and lattice friction. Experiments used the new feature to estimate the yield strength of steels and obtained an approximately accurate result. In addition, to raise the testing accuracy and realize the quantitative NDT of the yield strengths in cold-roll steel sheets, the rolling direction of the steel sheet was studied and analyzed in our research.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据