Characterization of Broadband Dispersion Behaviors of Wedge Waves using Laser Ultrasound Technique

2004 ◽  
Vol 43 (7A) ◽  
pp. 4392-4393 ◽  
Author(s):  
Che-Hua Yang ◽  
Kwen-Yi Tsai
Keyword(s):  
Laser Ultrasound ◽  
Ultrasound Technique ◽  
Wedge Waves

CHARACTERIZATION OF MATERIAL PROPERTIES IN SOLID OXIDE FUEL CELLS USING A LASER ULTRASOUND TECHNIQUE

2010 ◽  
Author(s):  
Che-Hua Yang ◽  
Sheng-Wei Tang ◽  
Donald O. Thompson ◽  
Dale E. Chimenti
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Material Properties ◽  
Solid Oxide ◽  
Laser Ultrasound ◽  
Oxide Fuel ◽  
Ultrasound Technique

Characterization of Roll-Cladded Aluminum Plates With Laser-Based Surface-Acoustic-Wave Measurements

2021 ◽  
Author(s):  
Clemens Grünsteidl ◽  
Georg Watzl ◽  
Christian Kerschbaummayr ◽  
Edgar Scherleitner ◽  
Günther Mayr ◽  
...  
Keyword(s):  
Optimization Procedure ◽  
Guided Wave ◽  
Laser Ultrasound ◽  
Ultrasound Technique ◽  
Wave Measurements ◽  
Dispersion Data ◽  
Free Parameters ◽  
Aluminum Plates ◽  
Non Destructive

Abstract We investigated roll-cladded aluminum structures consisting of a layer of Al4045 on Al3003 with a non-destructive laser-ultrasound technique. We determined the thickness of the cladding layer based on the dispersion of the fundamental guided wave propagating along the surface. We analyzed eight surfaces, with cladding thicknesses ranging from 0 to approximately 400μm The inversion of the dispersion data to obtain the thickness yielded in consistent results, which we compare to reference values obtained from micrographs. For the optimization procedure we allowed the material properties to be free parameters, but constrained them to be equal for all samples.

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