Inverse scattering at long wavelength: Delta mu = 0
Abstract
The direct and inverse scattering of elastic waves from localized flaws in elastic media in the long wavelength limit are discussed. For isotropic homogeneous ellipsoidal inclusions in an otherwise isotropic homogeneous medium several interesting results are discussed. First, if the host and flaw have the same shear modulus, delta mu = 0, then the size, shape or orientation of the flaw from a complete set of long wavelength scattering measurments cannot be inferred. The results for long wavelength scattering are based on some results for the elastostatic strain field induced in an ellipsoidal inclusion when delta mu is zero or small.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 1981
 Bibcode:
 1981STIN...8316612R
 Keywords:

 Elastic Media;
 Elastic Waves;
 Inverse Scattering;
 Wavelengths;
 Ellipsoids;
 Isotropic Media;
 Scattering Amplitude;
 Strain Distribution;
 Communications and Radar