Guided wave mode selection for inhomogeneous elastic waveguides using frequency domain finite element approach

Vamshi Krishna Chillara, Baiyang Ren, Clifford Jesse Lissenden, III

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This article describes the use of the frequency domain finite element (FDFE) technique for guided wave mode selection in inhomogeneous waveguides. Problems with Rayleigh-Lamb and Shear-Horizontal mode excitation in isotropic homogeneous plates are first studied to demonstrate the application of the approach. Then, two specific cases of inhomogeneous waveguides are studied using FDFE. Finally, an example of guided wave mode selection for inspecting disbonds in composites is presented. Identification of sensitive and insensitive modes for defect inspection is demonstrated. As the discretization parameters affect the accuracy of the results obtained from FDFE, effect of spatial discretization and the length of the domain used for the spatial fast Fourier transform are studied. Some recommendations with regard to the choice of the above parameters are provided.

Original languageEnglish (US)
Pages (from-to)199-211
Number of pages13
JournalUltrasonics
Volume67
DOIs
StatePublished - Apr 1 2016

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Fourier Analysis
waveguides
recommendations
inspection
shear
composite materials
defects
excitation

All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • Acoustics and Ultrasonics

Cite this

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abstract = "This article describes the use of the frequency domain finite element (FDFE) technique for guided wave mode selection in inhomogeneous waveguides. Problems with Rayleigh-Lamb and Shear-Horizontal mode excitation in isotropic homogeneous plates are first studied to demonstrate the application of the approach. Then, two specific cases of inhomogeneous waveguides are studied using FDFE. Finally, an example of guided wave mode selection for inspecting disbonds in composites is presented. Identification of sensitive and insensitive modes for defect inspection is demonstrated. As the discretization parameters affect the accuracy of the results obtained from FDFE, effect of spatial discretization and the length of the domain used for the spatial fast Fourier transform are studied. Some recommendations with regard to the choice of the above parameters are provided.",
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Guided wave mode selection for inhomogeneous elastic waveguides using frequency domain finite element approach. / Chillara, Vamshi Krishna; Ren, Baiyang; Lissenden, III, Clifford Jesse.

In: Ultrasonics, Vol. 67, 01.04.2016, p. 199-211.

Research output: Contribution to journalArticle

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