Title :
Analysis of a Magnetization Effect on the Sensing Signals in Magnetic Flux Leakage type NDT
Author :
Park, G.S. ; Seo, K. ; Kim, D.S. ; Shim, P.S. ; Lee, M.H. ; Yoo, H.R. ; Rho, Y.W.
Author_Institution :
Dept. of Electr. Eng., Pusan Nat. Univ., Busan
Abstract :
Because of the strong magnetic field of the PIG in magnetic flux type NDT system, the object itself is magnetized and shows the hysteresis characteristics during the sensing which might cause the distortion of the defect signals. In this paper, the magnetizations of the pipeline in MFL type NDT are analyzed, and the methods are developed to compensate the distorted signals according to the magnetic hysteresis of the pipeline
Keywords :
distortion; magnetic flux; magnetic hysteresis; nondestructive testing; pipelines; signal detection; NDT; defect signals sensing; magnetic field; magnetic flux leakage; magnetic hysteresis; magnetization effect; pipeline; signals distortion; Magnetic analysis; Magnetic anisotropy; Magnetic fields; Magnetic flux leakage; Magnetic hysteresis; Magnetization; Nonlinear distortion; Perpendicular magnetic anisotropy; Pipelines; Signal analysis;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1632933
