1. Influence of adhesive layer properties on laser-generated ultrasonic waves in thin bonded plates.
- Author
-
Hong, Sun, Bai, Xu, Hua, Zhang, Qian, Gao, and Shu, Zhang
- Subjects
- *
ADHESIVES , *ULTRASONIC waves , *QUANTITATIVE research , *LAMB waves , *FINITE element method , *FOURIER transforms , *NUMERICAL analysis , *ALUMINUM plates , *SENSITIVITY analysis - Abstract
This paper studies quantitatively the generation of Lamb waves in thin bonded plates subjected to laser illumination, after considering the viscoelasticity of the adhesive layer. The displacements of such plates have been calculated in the frequency domain by using the finite element method, and the time domain response has been reconstructed by applying an inverse fast Fourier transform. Numerical results are presented showing the normal surface displacement for several configurations: a single aluminum plate, a three-layer bonded plate, and a two-layer plate. The characteristics of the laser-generated Lamb waves for each particular case have been investigated. In addition, the sensitivity of the transient responses to variations of material properties (elastic modulus, viscoelastic modulus, and thickness) of the adhesive layer has been studied in detail. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF