Application of Electromagnetic Acoustic Emission Technology in Non-Destructive Testing
Liu Suzhen, Yang Qingxin, Jin Liang, Zhang Chuang
Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China
Electromagnetic acoustic emission technology does nondestructive detection with the effect of dynamic electromagnetic loading to generate a stress field stimulating stress waves from the defects. It can locate small flaws or cracks in thin-walled structures nondestructively to allow inspection of specific areas without loading the whole structure, so it combines advantages of electromagnetic non-destructive testing and acoustic emission non-destructive testing. The paper gives the finite element model of electromagnetic acoustic emission, analyzes the specimen deformations in different conditions, compares effects of several load factors on electroma gnetic acoustic emission and analyzes specimen temperature. Based on the numerical calculation, the experimental is carried out. The experimental result is in good agreement with theoretical analysis.
刘素贞, 杨庆新, 金亮, 张闯. 电磁声发射技术在无损检测中的应用[J]. 电工技术学报, 2009, 24(1): 23-27.
Liu Suzhen, Yang Qingxin, Jin Liang, Zhang Chuang. Application of Electromagnetic Acoustic Emission Technology in Non-Destructive Testing. Transactions of China Electrotechnical Society, 2009, 24(1): 23-27.