Modelling of gradients in elastic properties for acoustic microscopy characterizations

Nounah, Hassan; Cros, B.; Attal, J.

doi:10.1051/epjap:1999178

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2015

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“…For modeling FGMs, tow approaches are possible. The first assumed that the gradient is piecewise varying, and the FGM is slicing into finite homogeneous layers [4] [5]. The second approach assumed that the gradient is varying continuously between the tow basic material properties [6].…”

Section: Introductionmentioning

confidence: 99%

Numerical Evaluation of the Effect of Gradient on Reflection Coefficient of Continuously Graded Layer

Markou¹,

Nounah²

2015

ijacsa

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Abstract-This paper presents a numerical model, based on transfer matrix method, for modeling the propagation of surface acoustic waves at the interface formed by the coupling liquid and a continuously inhomogeneous thin layer on a semi-infinite substrate. The tow-dimensional spectrum of reflection coefficient computed by this model, allows determining the modes which propagate at the studied interface, this model treats different profile of gradients, and the numerical results obtained show that the reflection coefficient is sensitive to the variation of these gradients.

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Section: Introductionmentioning

confidence: 99%