Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8130452 | Ultrasonics | 2016 | 6 Pages |
Abstract
Beam divergences of acoustical fields in semi-infinite homogeneous anisotropic media are calculated based on a semi-analytical model. The model for a plane source in a semi-infinite homogeneous anisotropic medium is proposed as an extended model for a point source in an infinite medium. Beam divergences propagating along crystallographic axes ã1Â 0Â 0ã, ã1Â 1Â 0ã, and ã1Â 1Â 1ã in a cubic crystal, a single crystalline Ni-based alloy, are measured and compared to calculation results for verifying the model. The contribution of beam divergence attenuation to the total attenuation for propagating in anisotropic polycrystalline materials is quantitatively evaluated in isolation from scattering attenuation effects.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Acoustics and Ultrasonics
Authors
Naoyuki Kono, Sohichi Hirose,