Characterization of Lamb wave attenuation mechanisms

2013 ◽  
Author(s):  
Daniel Schmidt ◽  
Hossein Sadri ◽  
Artur Szewieczek ◽  
Michael Sinapius ◽  
Peter Wierach ◽  
...  
Keyword(s):  
Lamb Wave ◽  
Wave Attenuation

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

Design and characterization of an ultrasonic lamb-wave power delivery system

2013 ◽  
Vol 60 (6) ◽  
pp. 1134-1140 ◽  
Author(s):  
A. Kural ◽  
R. Pullin ◽  
K. Holford ◽  
J. Lees ◽  
J. Naylon ◽  
...  
Keyword(s):  
Delivery System ◽  
Lamb Wave ◽  
Power Delivery ◽  
Wave Power

scholarly journals Integrated Structural Health Assessment Using Piezoelectric Active Sensors

2005 ◽  
Vol 12 (6) ◽  
pp. 389-405 ◽  
Author(s):  
Jeannette R. Wait ◽  
Gyuhae Park ◽  
Charles R. Farrar
Keyword(s):  
Lamb Wave ◽  
Structural Damage ◽  
Structural Integrity ◽  
Damage Identification ◽  
Wave Attenuation ◽  
Health Assessment ◽  
Mechanical Impedance ◽  
Integrated Approach ◽  
Impedance Method ◽  
Sensing Technology

This paper illustrates an integrated approach for identifying structural damage. The method presented utilizes piezoelectric (PZT) materials to actuate/sense the dynamic response of the structures. Two damage identification techniques are integrated in this study, including impedance methods and Lamb wave propagations. The impedance method monitors the variations in structural mechanical impedance, which is coupled with the electrical impedance of the PZT patch. In Lamb wave propagations, one PZT patch acting as an actuator launches an elastic wave through the structure, and responses are measured by an array of PZT sensors. The changes in both wave attenuation and reflection are used to detect and locate the damage. Both the Lamb wave and impedance methods operate in high frequency ranges at which there are measurable changes in structural responses even for incipient damage such as small cracks, debonding, or loose connections. The combination of the local impedance method with the wave propagation based approach allows a better characterization of the system’s structural integrity. The paper concludes with experimental results to demonstrate the feasibility of this integrated active sensing technology.

Lamb wave attenuation in a rough plate. I. Analytical and experimental results in an anisotropic plate

2008 ◽  
Vol 104 (7) ◽  
pp. 074908 ◽  
Author(s):  
Catherine Potel ◽  
Damien Leduc ◽  
Bruno Morvan ◽  
Claude Depollier ◽  
Anne-Christine Hladky-Hennion ◽  
...  
Keyword(s):  
Lamb Wave ◽  
Anisotropic Plate ◽  
Wave Attenuation ◽  
Experimental Results ◽  
Rough Plate

Lamb wave attenuation in a rough plate. II. Analytical and numerical results in a fluid plate

2008 ◽  
Vol 104 (7) ◽  
pp. 074909 ◽  
Author(s):  
Catherine Potel ◽  
Damien Leduc ◽  
Bruno Morvan ◽  
Claude Depollier ◽  
Anne-Christine Hladky-Hennion ◽  
...  
Keyword(s):  
Lamb Wave ◽  
Wave Attenuation ◽  
Numerical Results ◽  
Rough Plate
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