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 equations for low-order mode guided waves in ultra-thin layered composites structure 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 wave-length so that the echoes from the front and the back of the surface cannot be separated in the time domain.
|Original language||English (US)|
|Number of pages||2|
|Journal||Wuli Xuebao/Acta Physica Sinica|
|State||Published - Jul 1 2000|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)