On the crossing points of Lamb wave velocity dispersion curves

1993 ◽  
Vol 93 (4) ◽  
pp. 1893-1895 ◽  
Author(s):  
Qigao Zhu ◽  
Walter G. Mayer
Keyword(s):  
Wave Velocity ◽  
Lamb Wave ◽  
Velocity Dispersion ◽  
Dispersion Curves ◽  
Lamb Wave Velocity

Characterization of fatigue damages in composite laminates using Lamb wave velocity and prediction of residual life

2017 ◽  
Vol 166 ◽  
pp. 219-228 ◽  
Author(s):  
Chongcong Tao ◽  
Hongli Ji ◽  
Jinhao Qiu ◽  
Chao Zhang ◽  
Zhan Wang ◽  
...  
Keyword(s):  
Wave Velocity ◽  
Lamb Wave ◽  
Composite Laminates ◽  
Residual Life ◽  
Lamb Wave Velocity

Measurement of Leaky Lamb Wave Velocity Using Raman-Nath Diffraction

1997 ◽  
Vol 36 (Part 1, No. 5B) ◽  
pp. 3171-3175 ◽  
Author(s):  
Michio Ohki ◽  
Masaru Inoue ◽  
Kohji Toda
Keyword(s):  
Wave Velocity ◽  
Lamb Wave ◽  
Lamb Wave Velocity ◽  
Leaky Lamb Wave

Lamb Wave-Based Damage Location Detection Method of Composite Plate

2011 ◽  
Vol 301-303 ◽  
pp. 1260-1266
Author(s):  
Li Shao Zhang ◽  
Huan Guo Chen ◽  
Jian Min Li ◽  
Li Tian
Keyword(s):  
Group Velocity ◽  
Lamb Wave ◽  
Composite Laminates ◽  
Composite Plate ◽  
Velocity Dispersion ◽  
Lamb Waves ◽  
Group Velocity Dispersion ◽  
Dispersion Curves ◽  
Damage Location ◽  
The Difference

To understand more about Lamb waves on composite laminates damage detection features, the Lamb wave group velocity dispersion curves are calculated and plotted by using dichotomy method in MATLAB. The signal parameters are chosen according to Group velocity dispersion curves. The dynamic response signals of the composite plate are obtained by finite element method. Damage location is calculated by the actual group velocity of Lamb wave and time of flight of the difference signal before and after damage.

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