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
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.
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页数:4
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