TY - JOUR
T1 - Lamb wave generation and reception with time-delay periodic linear arrays
T2 - a BEM simulation and experimental study
AU - Zhu, Wenhao
AU - Rose, Joseph L.
N1 - Funding Information:
W. Z. gratefully acknowledges the visiting scholarship from Huazhong University of Science & Technology, P.R. China, during the development of this work at the Pennsylvania State University.
PY - 1999
Y1 - 1999
N2 - A time-delay periodic linear array model has been proposed for Lamb wave generation and reception in plates. The unilateral guided wave emitting and receiving have been achieved by applying the interference principle in the array designs. A hybrid BEM technique has been developed and applied to simulate the wave generation procedure with such arrays and to analyze the performance. Experimental results also are presented for two typical time-delay periodic arrays to qualitatively validate the theoretical designs. The effects of the array parameters on the array performance, such as the selectivity of Lamb modes and effectiveness of Lamb wave generation, are investigated through the 2-D phase velocity-frequency spectrum analyses as well as Lamb mode wave structure calculations.
AB - A time-delay periodic linear array model has been proposed for Lamb wave generation and reception in plates. The unilateral guided wave emitting and receiving have been achieved by applying the interference principle in the array designs. A hybrid BEM technique has been developed and applied to simulate the wave generation procedure with such arrays and to analyze the performance. Experimental results also are presented for two typical time-delay periodic arrays to qualitatively validate the theoretical designs. The effects of the array parameters on the array performance, such as the selectivity of Lamb modes and effectiveness of Lamb wave generation, are investigated through the 2-D phase velocity-frequency spectrum analyses as well as Lamb mode wave structure calculations.
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U2 - 10.1109/58.764852
DO - 10.1109/58.764852
M3 - Article
C2 - 18238466
AN - SCOPUS:0032654743
SN - 0885-3010
VL - 46
SP - 654
EP - 664
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 3
ER -