Transient elastic waves propagating in a multi-layered medium subjected to in-plane dynamic loadings II. Numerical calculation and experimental measurement
Resource
Proceeding Royal Society of London, Series A 456: 1375-1396
Journal
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Journal Volume
456
Journal Issue
1998
Pages
1375-1396
Date Issued
2000
Author(s)
Abstract
The transient responses in the time domain of a layered medium subjected to dynamic in-plane loadings are presented in this part. Cagniard's method will be employed to invert the matrix series solution in the transformed domain (which was obtained in the first part of the paper) to the time domain. The numerical results for the transient response of a thin layer overlaying a half-space is presented and is discussed in detail. Acoustic emission experiments were conducted to study the propagation of elastic waves in the aforementioned medium, and to verify the numerical results. The experimental results show that the early-time transient response of vertical displacements on the surface of the thin layer agrees very well with the theoretical solutions under the plane stress assumption. © 2000 The Royal Society.
Subjects
Surface displacement; Transient response; Two-layered medium
Type
journal article