Application of MOOT to scattering of elastic waves from compound inclusionsperVisscher, W.M.New MexicoLos Alamos Scientific Laboratory1980-01-01engIt is shown how MOOT (method of optimal truncation, a convergent T-matrix scheme) can be used to calculate elastic wave scattering from compound inclusions, i.e., inclusions which themselves contain flaws - inclusions, voids, or cracks. The general equations are derived, and they are solved for a particular axially-symmetric case - a cracked spherical inclusion immersed in fluid. The crack edge is a circle on the equatorial plane; the crack can extend either inward to the center or outward to the surface of the sphere. Numerical results are given for scattering of acoustic waves from cracked spheres of various materials. Cracked spheres can be fabricated relatively easily, and may be useful in NDE calibrations.Pages: 6CalibrationSound WavesNondestructive TestingTesting 420500* -- Engineering-- Materials TestingFluidsMathematical ModelsMaterials Testing42 EngineeringSolidsWave PropagationAcoustic TestingDefectsUltrasonic TestingSpheres