The present paper aims to study the reflection/transmission of two-dimensional plane elastic waves (quasi-longitudinal displacement waves) at the interface between a self-reinforced half-space and an orthotropic micropolar elastic solid half-space. Three kinds of coupled elastic waves are reflected in the orthotropic micropolar half-space, and two types of waves are transmitted in the self-reinforced medium. The phase velocities obtained in closed form depend upon the angle of propagation and material parameters. The boundary conditions at the interface of the two media are solved, and reflection/transmission coefficients are obtained using Cramer’s rule. Numerical examples are given, and dependence of the reflection/transmission coefficients on the incident angle has been shown graphically. Also, the comparisons between anisotropic and isotropic cases have been marked distinctly. The obtained results may be utilised for the interpretation and analysis of geophysical data.

本文旨在研究二维平面弹性波（准纵向位移波）在自增强半空间和正交各向异性微极弹性固体半空间之间的界面处的反射/透射。三种耦合的弹性波在正交各向异性微极半空间反射，两种波在自增强介质中传播。以封闭形式获得的相速度取决于传播角度和材料参数。求解两种介质界面处的边界条件，并使用克莱默规则获得反射/透射系数。给出了数值示例，并以图形方式显示了反射/透射系数对入射角的依赖性。还，各向异性和各向同性情况之间的比较明显。获得的结果可用于地球物理数据的解释和分析。