As an example, the scattering of SH-wave from only two interface co-linear cracks is discussed. The distributed regularities of the crack DSIF are determined when the medium parameters are altered.

• 讨论了界面两个共线裂纹与SH波的散射结果；给出了裂纹尖端动应力强度因子随介质参数变化的分布规律.