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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Numerical modeling of surface elastic wave scattering in polycrystalline materials
 Grabec, Tomáš ; Ryzy, M. ; Verres, I. A.
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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