Multiple scattering between a cylinder and a plane

Abstract

Experimental measurements of the backscattering of a plane acoustic wave by a rigid cylinder parallel to an elastic plate are compared with theoretical calculations. Two sets of calculations, one which includes the effects of multiple scattering between the cylinder and the plate abd one which ignores multiple scattering between the cylinder and the plate and one which ignores these effects, were performed. The measurements were done in fresh water these effects, were performed. The measurements were done in fresh water using a 5.08-cm-diam solid steel cylinder at various distances from a 0.635 cm-thick steel plate. The frequency of the incident wave was varied from 50 to 100 kHz. Comparisons between the theories and experiment were made both for the case of the cylinder in front of the plate and for the case of the cylinder behind the plate. The results confirm that multiple scattering effects should be included in these scattering calculations. Subject Classification: [43]30.40; [43]20.30.