Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2007.05a
- /
- Pages.120-125
- /
- 2007
Strain Distribution Measurement for Wall Thinning Defect in Pipe Bends by ESPI
ESPI 를 이용한 곡관 감육 결함부의 변형률 분포 측정
- Naseem, Akhter ;
-
Kim, Koung-Suk
;
- Jung, Sung-Wook ;
- Park, Jong-Hyun ;
- Choi, Jung-Suk ;
-
Jung, Hyun-Chul
- 아흐터나심 (조선대학교원) ;
-
김경석
(조선대학교 기계설계공학과) ;
- 정성욱 (조선대학교 레이저센터) ;
- 박종현 (조선대학교원) ;
- 최정석 (목포과학대학 자동차공학과) ;
-
정현철
(조선대학교 기계설계공학과)
- Published : 2007.05.30
Abstract
Put Abstract text here The strain distribution measurement for wall thinned pipe bends by ESPI is presented. Defect types observed in the steel piping in the nuclear power plants (NPP) are the crack at the weld part and the wall thinning defect in the pipe bends. Especially, the wall thinning defects in the pipe bends due to the flow-accelerated corrosion (FAC) is a main type of defects observed in the carbon steel piping system. ESPI is one of the optical non-destructive testing methods and can measure the stress and the strain distribution of the object subjected by the tensile loading or the internal pressure. In this paper, the strain distribution of the wall thinned pipe bends due to the internal pressure will be measured by ESPI technique and the results are discussed. From the results, the size of the wall thinning defect can also be measured approximately.
Keywords