TY - JOUR
T1 - Guided wave mode selection for inhomogeneous elastic waveguides using frequency domain finite element approach
AU - Chillara, Vamshi Krishna
AU - Ren, Baiyang
AU - Lissenden, Cliff J.
N1 - Funding Information:
This material is mainly based upon work supported by the Nuclear Energy Universities Program under Award number 00102946, the National Science Foundation under Award number 1300562. Baiyang Ren and Cliff J. Lissenden also acknowledge the support of Government under the Agreement No. W911W6-11-2-0011.
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2016/4
Y1 - 2016/4
N2 - 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.
AB - 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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U2 - 10.1016/j.ultras.2015.12.007
DO - 10.1016/j.ultras.2015.12.007
M3 - Article
C2 - 26746160
AN - SCOPUS:84977891560
SN - 0041-624X
VL - 67
SP - 199
EP - 211
JO - Ultrasonics
JF - Ultrasonics
ER -