Article Article
Numerical Simulation and Experimental Investigation of Propagation of Guided Waves on Pipe with Discontinuities in Different Axial Angles

Guided wave testing is the main method used to detect pipe discontinuities. In this paper, finite element analysis software was used to perform a numerical simulation of the propagation of a guided wave T(0,1) mode in a pipe with discontinuities at different axial angles. In order to demonstrate the accuracy of the proposed simulation, the propagation of the guided wave was examined and investigated. The numerical simulation and experimental results were consistent, showing that the signal of the T(0,1) mode guided wave was too small to be considered as the signal from the discontinuity when the axial angle was 45°, and the reflection coefficient increased by increasing the axial angle when the axial angle was larger than 45°. Conversely, the reflection coefficient was much smaller and decreased by increasing the axial angle when the axial angle was less than 45°.

  • Alleyne, D.N., M.J.S. Lowe, and P. Cawley, “The Reflection of Guided Waves from Circumferential Notches in Pipes,” Journal of Applied Mechanics, Vol. 65, No. 3, 1998, pp. 635–641.
  • Bai, H., A. Shah, N. Popplewell, and S. Datta, “Scattering of Guided Waves by Circumferential Cracks in Steel Pipes,” Journal of Applied Mechanics, Vol. 68, No. 4, 2000, pp. 619–631.
  • Cawley, P., M.J.S. Lowe, F. Simonetti, C. Chevalier, and A.G. Roosenbrand, “The Variation of the Reflection Coefficient of Extensional Guided Waves in Pipes from Defects as a Function of Defect Depth, Axial Extent, Circumferential Extent and Frequency,” Proceedings of the Institution of Mechanical Engineers, Vol. 216, No. 11, 2002, pp. 11–31.
  • Demma, A., “The Interaction of Guided Waves with Discontinuities in Structures,” Ph.D. thesis, University of London, London, England, 2003.
  • KSD, KSD 3642 SPPS380 Carbon Steel Pipes for Pressure Service, Korea Standard Association, Seoul, South Korea, 2009.
  • Kim, Y.G., H.S. Moon, K.J. Park, and J.K. Lee, “Generating and Detecting Torsional Guided Waves using Magnetostrictive Sensors of Crossed Coil,” NDT & E International, Vol. 44, No. 2, 2011, pp. 145–152.
  • Moreau, L., A. Velichko, and P.D. Wilcox, “Accurate Finite Element Modelling of Guided Wave Scattering from Irregular Defects,” NDT & E International, Vol. 45, No. 1, 2012, pp. 46–54.
  • Rose, J.L., Ultrasonic Waves in Solid Media, Cambridge University Press, London, England, 1999, pp. 159–162.
  • Wilcox, P., M. Lowe, and P. Cawley, “Long Range Lamb Wave Inspection: The Effect of Dispersion and Modal Selectivity,” Review of Progress in Quantitative Nondestructive Evaluation, Vol. 18A, 1999, pp. 151–158.
  • Zhou, W.J., M.N. Ichchou, and J.M. Mencik, “Analysis of Wave Propagation in Cylindrical Pipes with Local Inhomogeneities,” Journal of Sound and Vibration, Vol. 319, Nos. 1–2, 2009, pp. 335–354.
  • Zhu, W., J.L. Rose, J.N. Barshinger, and V.S. Agarwala, “Ultrasonic Guided Wave NDT for Hidden Corrosion Detection,” Research in Nondestructive Evaluation, Vol. 10, No. 4, 1998, pp. 205–225.
Usage Shares
Total Views
170 Page Views
Total Shares
0 Tweets
0 PDF Downloads
0 Facebook Shares
Total Usage