GUIDED WAVE IN ULTRA-THIN LAYERED COMPOSITE STRUCTURE WITH WEAK AND SLIP INTERFA CE IN DIFFERENT DEPTH
GUIDED WAVE IN ULTRA-THIN LAYERED COMPOSITE STRUCTURE WITH WEAK AND SLIP INTERFA CE IN DIFFERENT DEPTH
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DOI：
10.7498/aps.49.1297
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发表时间：
2000-07
影响因子：
1
通讯作者：
Zhang Rui;Wang Ming-xi;Cao Wen-wu
中科院分区：
文献类型：
--
作者：
Zhang Rui;Wang Ming-xi;Cao Wen-wu
结合多层复合介质中超声波建模的传递矩阵技术、弱界面的弹簧模型和滑移界面的界面条件，建立了不同深度的弱界面或滑移界面的超薄层状复合材料结构中低阶模导波的广义频率方程，并分析了界面深度对低阶模超声兰姆波色散特性的影响。这里的“超薄”是指板材的厚度仅为超声波波长的几分之一，使得来自表面正面和背面的回波在时域上无法分离。
In conjunction with the transfer matrix techniques for modeling ultrasonic wave in multilayered composite medium, the spring model for a weak interface and the interface condition of the slip interface, we have the generalized frequency equ ations for low-order mode guided waves in ultra-thin layered composites structur e with a weak or slip interface in different depth, and the effect of the depth of the interface on the dispersion properties of low-order mode ultrasonic Lamb wave are analyzed. The “ultra-thin” here means that the thickness of the plate is only a fraction of the ultrasound wavelength so that the echoes from the fro nt and the back of the surface cannot be separated in the time domain.