Group velocity of cylindrical guided waves in anisotropic laminate composites.
Group velocity of cylindrical guided waves in anisotropic laminate composites.
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DOI：
10.1121/1.4829534
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发表时间：
2014-01
期刊：
影响因子：
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通讯作者：
E. Glushkov;N. Glushkova;A. Eremin;R. Lammering
中科院分区：
文献类型：
--
作者：
E. Glushkov;N. Glushkova;A. Eremin;R. Lammering
本文提出了各向异性复合材料层合板中波包群速度的显式表达式。它是基于由路径积分表示的复合材料中产生的波场由给定的本地化源的圆柱导波渐近。通过与已知的平面导波群速度矢量表示法的比较，从理论上证实了导出的表达式。然后通过激光测振仪测量复合材料板中压电晶片有源传感器产生的导波包进行了实验验证。
An explicit expression for the group velocity of wave packets, propagating in a laminate anisotropic composite plate in prescribed directions, is proposed. It is based on the cylindrical guided wave asymptotics derived from the path integral representation for wave fields generated in the composites by given localized sources. The expression derived is theoretically confirmed by the comparison with a known representation for the group velocity vector of a plane guided wave. Then it is experimentally validated against laser vibrometer measurements of guided wave packets generated by a piezoelectric wafer active sensor in a composite plate.