ABSTRACT
This study investigates the influence of S-wave oscillation direction on the evolution of S-wave signals in granular materials using the flexible boundary cubical cell and disk-shaped shear plates, by which S-waves with a fixed propagation direction and varied oscillation directions can be generated and received. Comparisons of wave signals show that S-wave oscillation direction can reflect the inner fabric of granular materials. In addition, strong directivity of particle orientation within the depositional plane was observed to have obvious influence on S-wave propagation.
