OBLIQUE SCATTERING OF AN ELASTIC-WAVE FROM A MULTILAYERED CYLINDER INA SOLID - TRANSFER-MATRIX APPROACH

The scattering of an elastic wave obliquely incident on a multilayered cylinder in a solid is studied using a transfer matrix approach. Scat tering of longitudinal and shear waves with arbitrary polarizations ar e considered. To facilitate the derivation of the solutions for scatte ring in the multilayered cylindrical system, a 6X6 transfer matrix is introduced for each cylindrical layer to relate the stresses and displ acements on the inner and outer boundaries of that layer. A total tran sfer matrix relating the elastic field in the surrounding matrix to th at in the cylinder core is obtained as a product of individual transfe r matrices of intermediate layers. Numerical examples are given for a coated multiphase SiC fiber in a titanium matrix. Frequency and angle dependencies of specularly reflected and forward-scattered waves, and of the total scattering cross section, are calculated for different fi ber-matrix interphase properties. (C) 1996 Acoustical Society of Ameri ca.