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Simulation of Wave Interaction With Arbitrarily Oriented Defects in Thin Sections Using Spectral Element Method

[+] Author Affiliations
G. Baskaran, C. Lakshmana Rao, Krishnan Balasubramaniam

Indian Institute of Technology-Madras, Chennai, India

Paper No. PVP2005-71673, pp. 237-244; 8 pages
doi:10.1115/PVP2005-71673
From:
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 5: High Pressure Technology, Nondestructive Evaluation, Pipeline Systems, Student Paper Competition
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4190-1 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME

abstract

Numerical simulation of wave propagation and its interaction with defects in a long range (1 m) thin sections (10 mm) using the regular finite element method is very costly, since it requires very fine meshes to accurately capture response signals. Spectral element method (SEM) is a numerical technique that solves the dynamic problem in frequency domain. SEM has been applied for detection of vertical and horizontal defects. This paper discusses application of SEM to any arbitrarily orientated crack in long range pressure vessels. The simulation of applications of Lamb wave for detection and sizing using TOFD technique is demonstrated. The advantage of the current formulation is quick detection of defects in thin bodies of any orientation using Lamb waves and sizing the same using TOFD techniques are illustrated.

Copyright © 2005 by ASME

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