Development of hybrid one‐dimensional finite element/analytical method for analysis of lamb wave propagation characteristics in composit panels.

2010 ◽  
Vol 127 (3) ◽  
pp. 1770-1770
Author(s):  
Yong‐Joe Kim ◽  
Je‐Heon Han
Keyword(s):  
Finite Element ◽  
Wave Propagation ◽  
Analytical Method ◽  
Lamb Wave ◽  
Propagation Characteristics ◽  
One Dimensional ◽  
Dimensional Finite Element ◽  
Lamb Wave Propagation

scholarly journals Study on lamb wave propagation characteristics along the grain of thin wood sheet

Wood Research ◽  
2021 ◽  
Vol 66 (1) ◽  
pp. 141-152
Author(s):  
MINGHUA WANG ◽  
MING LI ◽  
TINGTING DENG ◽  
SAIYIN FANG ◽  
XIAOSONG LI ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Lamb Wave ◽  
Propagation Characteristics ◽  
Lamb Wave Propagation

Study on Recognize for Lamb Wave Test Signals Based on Finite Element Modeling

2013 ◽  
Vol 288 ◽  
pp. 25-29
Author(s):  
Yan Liu ◽  
Yue Min Wang ◽  
Chuan Jun Shen ◽  
Feng Rui Sun
Keyword(s):  
Finite Element ◽  
Wave Propagation ◽  
Lamb Wave ◽  
Matching Pursuit ◽  
Signal Decomposition ◽  
Ultrasonic Technique ◽  
Characteristic Parameters ◽  
Fem Method ◽  
Lamb Wave Propagation ◽  
Multi Mode

In the defect test of plate-like structure, acousto-ultrasonic technique can stimulate a multi-mode Lamb wave. This paper used an FEM method to investigate the Lamb wave propagation, the simulating signals are decomposed and reconstructed by MP and compared with the theoretical parameter curve of the frequency dispersed curves. It was proved that matching pursuit based on tEP can accurately search the characteristic parameters of the signal, realize the rapid signal decomposition and reconstruction, and identify the defect signals.

Structural damage detection using combined finite-element and model Lamb wave propagation parameters

2008 ◽  
Vol 223 (3) ◽  
pp. 769-777 ◽  
Author(s):  
C Ratnam ◽  
B S Ben ◽  
B A Ben
Keyword(s):  
Finite Element ◽  
Wave Propagation ◽  
Lamb Wave ◽  
Structural Damage ◽  
Pulse Generator ◽  
Ultrasonic Pulse ◽  
Element Analysis ◽  
Propagation Parameters ◽  
Set Up ◽  
Lamb Wave Propagation

This article presents a combined finite-element and model Lamb wave propagation parameters method for structural health monitoring. Modal analysis allows identifying the mode conversions induced by the defects. A simulation combining a planar, lossless finite-element analysis with Lamb wave propagation parameter is proposed. This analysis is performed on two aluminium bars in both undamaged and damaged states, where the two damaged states are: (a) one having a circular hole and (b) the other having a cut partway through the bar, perpendicular to the long axis of the bar. The Lamb wave propagation parameters are calibrated by using the ultrasonic pulse generator test set-up. The natural frequencies for the theoretical, finite element and experimental results are compared, and close agreement is found between the frequencies obtained experimentally and computationally.

Sign in / Sign up

Export Citation Format

Share Document