A new theory of elastodynamic homogenization is proposed, which exploits the integral equation form of Navier’s equations and relationships between length scales within composite media. The scheme is introduced by focusing on its leading-order approximation for orthotropic, periodic fibre-reinforced media where fibres have arbitrary cross-sectional shape. The methodology is general but here it ...

The 3D finite difference modeling of the wave propagation of M>8 earthquakes in subduction zones in a realistic-size earth is very computationally intensive task. We use a parallel finite difference code that uses second order operators in time and fourth order differences in space on a staggered grid. We develop an efficient parallel program using message passing interface (MPI) and a kinemati...

Abstract The application of absolutely calibrated piezoelectric (PZT) sensors is increasingly used to help interpret the information carried by radiated elastic waves laboratory/in situs acoustic emissions (AEs) in nondestructive evaluation. In this paper, we present methodology based on finite element method (FEM) characterize PZT sensors. FEM-based modelling tool numerically compute true Gree...