Resonance acoustic scattering by a porous sphere in elastic medium

• 来源期刊: 声学学报（英文版）
• 年，卷（期）: 2004,（2）
• 页码范围: 108-118
• 页数: 11页
• 语种: 英文

摘要

The acoustic resonance scattering spectrum of a porous sphere embedded in an elastic matrix is studied based on the resonance scattering theory (RST) proposed by Flax et al. Taking nodular cast iron as an example, some mumerical computations are made for acoustic backscattering and resonance scattering spectra of certain partial waves. The change of acoustic resonance frequencies of different modes as a function of the porosity of porous spherical scatterers is also simulated.