Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7126375 | Measurement | 2014 | 14 Pages |
Abstract
Finite element method (FEM) is used to get the ideal signal of MFL with defects, including signal horizontal and vertical. According to the analysis of different signal of MFL with defects, the relation between magnetic signal and defect size is received. Then a full set of PMFL system based on sensor array is used to detect the standard specimens. In order to eliminate the noise and extract the feature, the detecting signal is analyzed and processed by some pre-treatments. In the process of time-domain analysis, every peak value of sensor signal is extracted as analyzing signal, then peak values are lined as output signal of the sensor array. By analyzing different characters of curve under different defect sizes, and getting corresponding characteristic quantities, the reasons of the errors are discussed.
Related Topics
Physical Sciences and Engineering
Engineering
Control and Systems Engineering
Authors
Ping Wang, Longhui Xiong, Yinchun Sun, Haitao Wang, Guiyun Tian,