Influence of Slot Defect Length on Magnetic Flux Leakage  

作　　者：Songling HUANG, Luming LI, Haiqing YANG and Keren SHIDepartment of Electrical Engineering, Tsinghua University, Beijing 100084, China 

出　　处：《Journal of Materials Science & Technology》2004年第2期231-232,共2页材料科学技术（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant No.50001006,50305017);China Postdoctoral Science Foundation.

摘　　要： A key issue, which influences the applications of magnetic flux leakage testing, is defect quantification. There have been many research on the relationship between width, depth and magnetic flux leakage of slot defect. However, the length factor is often ignored. The relationship between characteristics of defect leakage field and defect length was investigated. The magnetic flux leakages of a series of plate specimens with the same width, same depth and different length slot defects were tested under the same magnetizing conditions. Testing results show that defect length is an important parameter needed to consider in quantifying defects.A key issue, which influences the applications of magnetic flux leakage testing, is defect quantification. There have been many research on the relationship between width, depth and magnetic flux leakage of slot defect. However, the length factor is often ignored. The relationship between characteristics of defect leakage field and defect length was investigated. The magnetic flux leakages of a series of plate specimens with the same width, same depth and different length slot defects were tested under the same magnetizing conditions. Testing results show that defect length is an important parameter needed to consider in quantifying defects.

关 键 词：Magnetic flux leakage (MFL) testing Defect quantification Slot length 

分 类 号：TM936[电气工程—电力电子与电力传动]