Abstract
The concept of a generalized extinction cross-section introduced in a previous paper is given in detail and exemplified by the problem of scattering by an elastic cylinder embedded in a viscoelastic matrix. It is shown that under certain conditions the presence of inclusion may have a supporting effect on wave propagation (negative extinction). The derived low-frequency expansions indicate that the Rayleigh law may not hold in the case of a lossy medium. Numerical results as well as discussions concerning separation between scattering and intrinsic viscoelastic losses are also given.
| Original language | English |
|---|---|
| Pages (from-to) | 328-334 |
| Number of pages | 7 |
| Journal | Ultrasonics |
| Volume | 26 |
| Issue number | 6 |
| DOIs | |
| State | Published - Nov 1988 |
Keywords
- inclusions
- viscoelastic losses
- wave scattering