Abstract
The scattering of ultrasonic waves by oblate spheroidal voids of very high aspect ratios (a:b=1:20) is analyzed using the T-matrix method. By using an iterative Gram-Schmidt orthogonalization procedure, and by enforcing the unitarity and the symmetry properties of the T matrix at each iteration, numerical results are presented for normalized frequencies kpb up to 15.0. Aspect ratios up to 1:20 and such high frequencies were previously not amenable to computations using the conventional T-matrix procedure. Scattering by smooth as well as rough voids having periodically corrugated surfaces is studied. All computations were carried out on a DEC VAX 11/730 minicomputer.
Original language | English (US) |
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Pages (from-to) | 4525-4530 |
Number of pages | 6 |
Journal | Journal of Applied Physics |
Volume | 58 |
Issue number | 12 |
DOIs | |
State | Published - 1985 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy