Browse > Article

A Study on the Measurement of the Internal Crack in Flange Welding Zone by Digital Shearography  

Kim, Jeong-Pil (Department of Mechanical Design, Graduate school of Chonbuk Univ.)
Kang, Young-June (Department of Mechanical Design Engineering, Chonbuk Univ.)
Park, Sang-Kyu (Dept. of Mechanical & Automotive Engineering, Woosuk Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.1, 2009 , pp. 97-104 More about this Journal
Abstract
There is a many kinds with nondestructive testing such as RT and UT representatively. Referred before two testing methods there is a limit which is spatial such as nuclear pipe, small vessel, sealing up vessel. So a new technique needs to overcome the limit which is spatial. shearography will be able to overcome the limit which is spatial. This paper introducing shearography which was known as non-contact full-field testing method and It is an interferometric technique for measurement of surface deformation such as displacement or displacement gradient. Also, a research about internal defect of the flange welding zone was accomplished. About variation with method pressurized with the Gaseous Nitrogen. Phase map where is various were measured according to changing a sheared direction, size of crack and loaded pressure. Consequently, crack quantitatively to be detected qualitatively was measured by using shearography.
Keywords
Shearography; Interferometer; ESPI; Flange Welding Zone;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Lobanov, L. M., Pivtorak, V. A., Kyyanets, I. V. and Savytska, O. M., "Nondestructive testing of composite and metallic pipes by the method ofelectronic shearography," Materials Science, Vol. 43, No. 4, pp. 522-527, 2007   DOI
2 Hung, Y. Y., "Shearography: A Practical Nondestructive Testing Method," International Advances in Nondestructive Testing, Vol. 14, 1989
3 Steinchen, W., Yang, L. X., Schuth, M. and Kupfer, G., "Electronic Shearography(ESPI) for direct measurement of Strains," Proc. of SPIE, Vol. 2248, pp. 210-221, 1994   DOI
4 Kang, Y. J., Lee, J. S. and Baik, S. H., "A Study on Evaluation of Defects of Pressure Vessel by Using ESPI and FEM," J. of the KSPE, Vol. 24, No. 12, pp.104-110, 2007   과학기술학회마을
5 Steinchen, W., Yang, L. X., Kupfer, G. and Maeckel, P., "Nonde-structive testing of micro-cracks using digital speckle pattern shearing interferometry," Proc. of SPIE, Vol. 3098, pp. 528-535, 1997   DOI
6 Lomov, S. V., Ivanov, D. S., Verpoesta, I., Zakob, M., Kurashikib, T., Nakaib, H., Molimardc, J. and Vautrin,A., "Full-field strain measurements for validation ofmeso-FE analysis of textile composites," Composites Part A: Applied Science and Manufacturing, Vol. 9, Issue 8, pp. 1218-1231, 2008   DOI   ScienceOn
7 Mader, D. L., "Holographic and nonholographic NDT for nuclear and coal-fired power plants," SPIE, Vol. 604, pp. 37-56, 1986