TY - JOUR
T1 - The crack detection of acoustic metamaterials using a weighted mode shape-wavelet-based strategy
AU - He, Z. C.
AU - Wei, B. l.
AU - Zhou, L. F.
AU - Zhou, E. l.
AU - Li, Eric
AU - Xing, Zy
PY - 2022/12/1
Y1 - 2022/12/1
N2 - With the extensive application of acoustic metamaterial (AM) in the mechanical industry, the crack detection of AM becomes increasingly crucial. In this paper, a weighted mode shape-wavelet-based strategy coupled with edge-based smoothed finite element (ES-FEM) is presented for damage detection of AM. Firstly, the multi-order mode shapes of cracked AM are computed by ES-FEM, and the obtained mode shape data is further interpolated and extended. Then, the multi-order detail coefficients of smoothed mode shapes are calculated through the discrete wavelet transform (DWT). Finally, the damage index and crack width estimator are established from the weighted multi-order detail coefficients to locate the crack and predict crack width, respectively. Numerical results demonstrate that the traditional modal-wavelet based crack detection strategy is very ambiguous while the proposed ES-FEM coupled weighted crack detection strategy is very effective for crack location and crack size prediction of AM.
AB - With the extensive application of acoustic metamaterial (AM) in the mechanical industry, the crack detection of AM becomes increasingly crucial. In this paper, a weighted mode shape-wavelet-based strategy coupled with edge-based smoothed finite element (ES-FEM) is presented for damage detection of AM. Firstly, the multi-order mode shapes of cracked AM are computed by ES-FEM, and the obtained mode shape data is further interpolated and extended. Then, the multi-order detail coefficients of smoothed mode shapes are calculated through the discrete wavelet transform (DWT). Finally, the damage index and crack width estimator are established from the weighted multi-order detail coefficients to locate the crack and predict crack width, respectively. Numerical results demonstrate that the traditional modal-wavelet based crack detection strategy is very ambiguous while the proposed ES-FEM coupled weighted crack detection strategy is very effective for crack location and crack size prediction of AM.
U2 - 10.1016/j.enganabound.2022.09.019
DO - 10.1016/j.enganabound.2022.09.019
M3 - Article
SN - 0955-7997
VL - 145
SP - 286
EP - 298
JO - Engineering Analysis with Boundary Elements
JF - Engineering Analysis with Boundary Elements
ER -