GUIDED WAVE PROPAGATION IN CURVED PLATE‐LIKE STRUCTURES

GUIDED WAVE PROPAGATION IN CURVED PLATE‐LIKE STRUCTURES
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DOI：
10.1063/1.2902765
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发表时间：
2008-03
期刊：
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影响因子：
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通讯作者：
Fei Yan;J. Mu;J. Rose
Fei Yan;J. Mu;J. Rose
中科院分区：
其他
文献类型：
--
作者：
Fei Yan;J. Mu;J. Rose

文献摘要

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超声导波已被证明是一种很有前途的无损检测(NDE)和结构健康监测(SHM)工具，特别是对板和板状结构。然而，许多板状结构在进行无损检测和结构抗震设计时都是弯曲的。曲率在导波传播中起着重要的作用。本文的目的是研究曲率对导波传播的影响。采用半解析有限元方法分析了不同曲率的板状结构的频散曲线。文中还研究了波结构随曲率的变化规律。通过波结构分析，对板曲率变化引起的频散曲线变化进行了物理分析。
Ultrasonic guided waves have been demonstrated as a promising tool in nondestructive evaluation (NDE) and structural health monitoring (SHM), especially for plates and plate‐like structures. However, many plate‐like structures subject to NDE and SHM are curved. The curvature plays an important role in guided wave propagation. The objective of the work presented in this paper is to investigate the influence of curvature on guided wave propagation. A semi‐analytical finite element (SAFE) technique is employed to analyze the dispersion curves for plate‐like structures with different curvatures. The changing of the wave structures with curvature is investigated as well. Physical insight on the dispersion curve variations introduced by the plate curvature variation is obtained through wave structure analysis.