Browse > Article

Determination of Focal Laws for Ultrasonic Phased Array Testing of Dissimilar Metal Welds  

Jing, Ye (School of Mechanical Engineering, Sungkyunkwan University)
Kim, Hak-Joon (School of Mechanical Engineering, Sungkyunkwan University)
Song, Sung-Jin (School of Mechanical Engineering, Sungkyunkwan University)
Song, Myung-Ho (Korea Institute of Nuclear Safety)
Kang, Suk-Chull (Korea Institute of Nuclear Safety)
Kang, Sung-Sik (Korea Institute of Nuclear Safety)
Kim, Kyung-Cho (Korea Institute of Nuclear Safety)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.28, no.5, 2008 , pp. 427-435 More about this Journal
Abstract
Inspection of dissimilar metal welds using phased array ultrasound is not easy at all, because crystalline structure of dissimilar metal welds cause deviation and splitting of the ultrasonic beams. Thus, in order to have focusing and/or steering phased array beams in dissimilar metal welds, proper time delays should be determined by ray tracing. In this paper, we proposed an effective approach to solve this difficult problem. Specifically, we modify the Oglivy's model parameters to describe the crystalline structure of real dissimilar metal welds in a fabricated specimen. And then, we calculate the proper time delay and incident angle of linear phased array transducer in the anisotropic and inhomogeneous material for focusing and/or steering phased array ultrasonic beams on the desired position.
Keywords
Dissimilar Metal Welds; Crystalline Structure; Phased Array; Focal Law; Time Delay;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Buttram, Jonathan D. (2007) Manual Ultrasonic Phased Array Technique for Accurate Through-Wall Sizing of Planar Discontinuities in Dissimilar Metal Welds, Materials Evaluation, Vol. 65, No. 3, pp. 62-66
2 Joly, E. and Tsogka, P. C. (2001) Application of the Fictitious Domain Method to 2D Linear Elastodynamic Problems, J. Comput Acoust., Vol. 9, pp. 1175-1202   DOI
3 Rokhlin, S. I.. Bolland, T. K. and Adler, L. (1986) Reflection and Refraction of Elastic Waves on a Plane Interface between Two Generally Anisotropic Media, J. Acoust. Soc. Am. Vol. 79, No. 4, pp. 210-217
4 Anderson, M., Cumblidge, S. and Doctor, S. (2004) Through Weld Testing of Wrought Stainless Steel Piping Using Phased Array Ultrasonic Probes, 16th World Conference on NDT, CD-ROM, Montreal, Canada
5 Becache, E., Joly, P. and Tsogka, C. (2000) An Analysis of New Mixed Finite Elements for the Approximation of Wave Propagation Problems, SIAM J. Numer. Anal, Vol. 37, pp. 1053-1084   DOI   ScienceOn
6 Ogilvy, J. A. (1985) Computerized Ultrasonic Ray Tracing in Austenitic Steel, NDT&E International, Vol. 18, pp. 67-77   DOI   ScienceOn
7 Henneke, E. G. (1972) Reflection-Refraction of a Stress Wave at a Plane Boundary between Anisotropic Media, J. Acoust. Soc. Am. Vol. 51, pp. 210-217   DOI
8 Apfel, A., Moysan, J., Corneloup, G. and Chassignole, B. (2004) Simulations of the Influence of the Grains Orientations on Ultrasounds, 16th World Conference on NDT. http://www.ndt.net/article/wcndt2004/html/htmltxt/414_moysan.htm
9 Spies, M. (2000) Modeling of Transducer Fields in Inhomogeneous Anisotropic Materials Using Gaussian Beam Superposition, NDT&E International, Vol. 33, pp. 155-162   DOI   ScienceOn
10 Chassignole, B., Villard, D., Dubuget, M., Baboux, J. C. and Guerjouma, R. El (2000) Characterization of Austenitic Stainless Steel Welds for Ultrasonic NDT, Review of Progress in QNDE., Vol. 20, pp. 1325-1332
11 Zhao, X-Y., Song, S-J., Kim, H-J., Gang, T., Kang, S-C., Choi, Y-H., Kim, K. and Kang, S-S. (2007) Determination of Ultrasonic Beam Incident Angle and Position for Flaw Detection in Anisotropic and Inhomogeneous Weldments by Ray Tracing, Journal of the Korean Society for Nondestructive Testing, Vol. 27, No. 3, pp. 231-238   과학기술학회마을
12 Ogilvy, J. A. (1990) A Layered Media Model for Ray Propagation in Anisotropic, Inhomogeneous Materials, Appl. Math. Mod. Vol. 14, pp. 237-247   DOI   ScienceOn