Laboratory Experiments using Nonlinear Elastic Wave Spectroscopy (NEWS): a Precursor to Health Monitoring Applications in Aeronautics, Cultural Heritage, and Civil Engineering

2006 ◽  
pp. 389-409 ◽  
Author(s):  
Koen Van Den Abeele ◽  
Tomasz Katkowski ◽  
Nicolas Wilkie-Chancellier ◽  
Wendy Desadeleer
Keyword(s):  
Elastic Wave ◽  
Cultural Heritage ◽  
Health Monitoring ◽  
Laboratory Experiments ◽  
Civil Engineering ◽  
Monitoring Applications ◽  
Nonlinear Elastic ◽  
Nonlinear Elastic Wave

Nonlinear elastic wave propagation along free surfaces of a thick plate

1995 ◽  
Vol 97 (5) ◽  
pp. 3376-3376
Author(s):  
M. F. Hamilton ◽  
Yu. A. Il’inskii ◽  
E. A. Zabolotskaya
Keyword(s):  
Wave Propagation ◽  
Elastic Wave ◽  
Thick Plate ◽  
Elastic Wave Propagation ◽  
Free Surfaces ◽  
Nonlinear Elastic ◽  
Nonlinear Elastic Wave

Wave Motion of a Nonlinear Elastic Bar Subjected to Axial Excitation

2004 ◽  
Author(s):  
Liming Dai ◽  
Qiang Han
Keyword(s):  
Wave Propagation ◽  
Solitary Wave ◽  
Elastic Wave ◽  
Nonlinear Wave ◽  
Wave Motion ◽  
Initial Conditions ◽  
System Parameters ◽  
Elastic Bar ◽  
Nonlinear Elastic ◽  
Nonlinear Elastic Wave

This research intends to investigate the wave motion in a nonlinear elastic bar with large deflection subjected to an axial external exertion. A nonlinear elastic constitutive relation governs the material of the bar. General form of the nonlinear wave equations governing the wave motion in the bar is derived. With a modified complete approximate method, the asymptotic solution of solitary wave is developed for theoretical and numerical analyses of the wave motion. Various initial conditions and system parameters are considered for investigating the shape and propagation of the nonlinear elastic wave. With the governing equation of the wave motion of the bar and the solution developed, the characteristics of the nonlinear elastic wave of the bar are analyzed theoretically and numerically. Properties of the wave propagation and the effects of the system parameters of the bar and the influences of the initial conditions to the characteristics of the wave motion are investigated in details. Based on the theoretical analysis as well as the numerical simulations, it is found that the nonlinearity of the elastic bar may cause solitary wave in the bar. The velocity of the solitary wave propagating in the bar is related to the initial condition of the wave motion. This exhibits an obvious different characteristic between the nonlinear wave and that of the linear wave of an elastic bar. It is also found in the research that the solitary wave is a pulse wave with stable propagation. If the stability of the wave propagation is destroyed, the solitary wave will no longer exist. The results of the present research may provide guidelines for the wave motion analysis of nonlinear elastic solid elements.

Micro-damage diagnostics using nonlinear elastic wave spectroscopy (NEWS)

2001 ◽  
Vol 34 (4) ◽  
pp. 239-248 ◽  
Author(s):  
Koen E-A. Van Den Abeele ◽  
Alexander Sutin ◽  
Jan Carmeliet ◽  
Paul A. Johnson
Keyword(s):  
Elastic Wave ◽  
Damage Diagnostics ◽  
Nonlinear Elastic ◽  
Nonlinear Elastic Wave

scholarly journals Numerical simulation of nonlinear elastic wave propagation in piecewise homogeneous media

2006 ◽  
Vol 418 (1-2) ◽  
pp. 364-369 ◽  
Author(s):  
Arkadi Berezovski ◽  
Mihhail Berezovski ◽  
Jüri Engelbrecht
Keyword(s):  
Numerical Simulation ◽  
Wave Propagation ◽  
Elastic Wave ◽  
Elastic Wave Propagation ◽  
Piecewise Homogeneous Media ◽  
Nonlinear Elastic ◽  
Homogeneous Media ◽  
Nonlinear Elastic Wave

Continuous wave phase detection for probing nonlinear elastic wave interactions in rocks

1991 ◽  
Vol 89 (2) ◽  
pp. 598-603 ◽  
Author(s):  
Paul A. Johnson ◽  
Albert Migliori ◽  
Thomas J. Shankland
Keyword(s):  
Elastic Wave ◽  
Continuous Wave ◽  
Phase Detection ◽  
Wave Interactions ◽  
Wave Phase ◽  
Nonlinear Elastic ◽  
Nonlinear Elastic Wave

A two-dimensional pseudospectral model for time reversal and nonlinear elastic wave spectroscopy

2007 ◽  
Vol 122 (6) ◽  
pp. 3220-3229 ◽  
Author(s):  
Thomas Goursolle ◽  
Samuel Callé ◽  
Serge Dos Santos ◽  
Olivier Bou Matar
Keyword(s):  
Elastic Wave ◽  
Time Reversal ◽  
Two Dimensional ◽  
Nonlinear Elastic ◽  
Nonlinear Elastic Wave
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