Transactions of the Korean Society of Pressure Vessels and Piping (한국압력기기공학회 논문집)

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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A Study on the Crack Depth Sizing Using ECT Technique for Martensitic Stainless Steel

ECT를 이용한 마르텐사이트 재질의 균열결함 깊이측정 연구

  • 김왕배 (한국수력원자력(주) 원자력발전기술원) ;
  • 천근영 (한국수력원자력(주) 원자력발전기술원)
  • Published : 2009.12.01
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Abstract

The flaws detected by the non-destructive surface test methods shall be sized by means of the volumetric test such as an UT(ultrasonic test) or an ECT(eddy current test) for the purpose of analyzing and repairing them. It is generally known that the ECT is a comparatively effective technique for the small size cracks which are located shallowly from the surface. On this study, the ECT technique was tried to size the depth of the crack-like EDM notches, and it is identified that the ECT is an appropriate depth sizing technique for the shallow cracks less than 3mm in the Martensitic CA6NM material.

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