| 超薄层状复合媒质弱界面深度与声导波 |
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| 引用本文： | 张锐,万明习,CAO WEN-WU.超薄层状复合媒质弱界面深度与声导波[J].物理学报,2000,49(7):1297-1302. |
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| 作者姓名： | 张锐 万明习 CAO WEN-WU |
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| 作者单位： | (1)Intercollege Materials Research Laboratory,Pennsylvania State University,Univ ersity Park,PA,16802; (2)西安交通大学电子与信息工程学院生物医学工程系，西安 710049 |
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| 基金项目： | 国家自然科学基金(批准号： 69631020)和美国Office of Naval Research (Grant No. 000 14-93-1-0340) 资助的课题. |
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| 摘 要： | 结合推导层状复合媒质各界面刚性联接时声导波频散特性方程的传递矩阵方法，以及滑移界 面边界条件和弱界面“弹簧”模型，分别导出了超薄层状复合媒质中存在不同深度弱界面、滑移界面和脱层情况下声导波的广义频散方程，分析了三种联接界面的深度对低模式声导波频散特性的影响.
关键词：
导波
界面
频散
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| 关 键 词： | 导波 界面 频散 |
| 收稿时间： | 1999-09-16 |
GUIDED WAVE IN ULTRA-THIN LAYERED COMPOSITE STRUCTURE WITH WEAK AND SLIP INTERFA CE IN DIFFERENT DEPTH |
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| ZHANG RUI,WAN MING-XI,CAO WEN-WU.GUIDED WAVE IN ULTRA-THIN LAYERED COMPOSITE STRUCTURE WITH WEAK AND SLIP INTERFA CE IN DIFFERENT DEPTH[J].Acta Physica Sinica,2000,49(7):1297-1302. |
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| Authors: | ZHANG RUI WAN MING-XI CAO WEN-WU |
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| Abstract: | 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. |
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| Keywords: | guided wave inferface dispersion |
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