Title :
Quasi-3D Crack Size Estimation Using Eddy Current Testing Images on Austenite Stainless Steel Plates
Author :
Endo, Hisashi ; Uchimoto, Tetsuya ; Takagi, Toshiyuki
Author_Institution :
Inst. of Fluid Sci., Tohoku Univ., Sendai
Abstract :
This paper proposes a crack sizing method in eddy current testing (ECT) for austenite stainless steel plates. The image and finite element analyses for the ECT response maps estimate size of surface breaking and crack depth, respectively. At first, template matching identifies surface breaking in fragments. Second, measuring the length of fragment gives a quasi-3D region for sizing crack depth. Third, the crack is reconstructed by iteration of fast finite element analysis. Finally, overlapping all evaluated cracks represents complicated-shape cracks. It is shown that size of stress corrosion cracking is efficiently estimated
Keywords :
austenitic stainless steel; eddy current testing; finite element analysis; plates (structures); stress corrosion cracking; surface cracks; austenite stainless steel plates; crack depth sizing; eddy current testing images; finite element analyses; quasi-3D crack size estimation; stress corrosion cracking; surface breaking; template matching; Eddy current testing; Electrical capacitance tomography; Finite element methods; Image analysis; Image reconstruction; Length measurement; Size measurement; Steel; Surface cracks; Surface reconstruction;
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-06.2006.1633210
