Numerical modeling of surface elastic wave scattering in polycrystalline materials

被引：0

作者：

Grabec, Tomas ^{[1
]}

Ryzy, Martin ^{[2
]}

Veres, Istvan A. ^{[2
]}

机构：

[1] Czech Acad Sci, Nucl Phys Inst, Rez, Czech Republic

[2] Res Ctr Nondestruct Testing GmbH, Linz, Austria

来源：

2017 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2017年

关键词：

grain boundary scattering; elastic wave; numerical modeling; polycrystalline material; PROPAGATION; ULTRASOUND; MEDIA;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Grain-boundary scattering of acoustic waves in polycrystalline materials is studied with analytical and numerical methods in the presented paper. In particular, the attenuation of Surface Acoustic Waves (SAWs) propagating through a polycrystalline microstructure is investigated. A three dimensional timedomain finite-element method (FEM) is utilized for the numerical simulation, whereby the granular microstructure is modeled by Voronoi tessellation. The resulting frequency-dependent attenuation coefficients are compared to an explicit analytical model.

引用

页数：4

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