3D Finite Element Modeling of Absorbing Regions for Guided Wave Scattering Problems in Composite Materials

Abstract

This paper presents a three-dimensional (3D) finite
element (FE) model of the absorbing regions for guided wave
(GW) scattering in composite materials. The model is aimed at
providing an efficient and practical numerical modeling
technique for analyzing GW propagation and scattering in
infinitely long composite structures. The reported study sought to
find the optimal configuration of the absorbing regions to not only
minimize the wave reflection from boundaries, but also the
computational cost. The model with the optimal absorbing regions
was then applied to investigate the GW scattering characteristics
for different types and sizes of defects in laminated composite
beams.