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AbstractAbstract
[en] In lock-in thermography, a phase difference between the defect area and the healthy area indicates the qualitative location and size of the defect. To accurately estimate these parameters, the shearing-phase technique has been employed which gives the shearing-phase distribution. The shearing-phase distribution has maximum, minimum, and zero points that help determine quantitatively the size and location of the subsurface defect. In experiment, the proposed technique is verified with artificial specimen and these related factors are analyzed
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Source
10 refs, 10 figs, 4 tabs
Record Type
Journal Article
Journal
Journal of the Korean Society for Nondestructive Testing; ISSN 1225-7842;
; v. 27(4); p. 321-327

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