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Finite Element Analysis of Ultrasonic Wave Propagation in Anisotropic Materials

유한요소법을 이용한 이방성 재료에서의 초음파 전파 거동 해석

  • 정현조 (원광대학교 기계·시스템 디자인공학부) ;
  • 박문철 (원광대학교 대학원 기계공학과)
  • Published : 2002.10.01

Abstract

The accurate analysis of ultrasonic wave propagation and scattering plays an important role in many aspects of nondestructive evaluation. A numerical analysis makes it possible to perform parametric studies, and in this way the probability of detection and reliability of test results can be improved. In this paper, a finite element method was employed for the analysis of ultrasonic wave propagation in anisotropic materials, and the accuracy of results was checked by comparing with analytical predictions. The element size and the integral time step, which are the critical components for the convergence of finite element solutions, were determined using a commercial finite element code. Some differences for wave propagation in anisotropic media were illustrated when plane waves are propagating in a unidirectionally reinforced composite materials. When plane waves are propagating in nonsymmetric directions in a symmetric plane, deviation angles between the wave vector and the energy vector were found from finite element analyses and the results agreed well with analytical calculations.

Keywords

Wave Propagation;Finite Element Method;Anisotropic Material;Wave Vector;Energy Vector;Deviation Angle

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Cited by

  1. Ultrasonic beam propagation in highly anisotropic materials simulated by multi-Gaussian beams vol.21, pp.8, 2007, https://doi.org/10.1007/BF03179034