Dispersive Ultrasonic Waves in Adhesive Bonds
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
The verification of the adhesive bonds is one of the major problems in many fields. Different methods were suggested to check the quality of the bonds between a layer and a layer or a substrate. Most of these techniques are based on a spectral analysis of the acoustical signal reflected at normal incidence [1–5]. In this paper we focalize our attention on the analysis of the phase velocity dispersion curves characterizing the different samples and we suggest the use of these curves for checking the quality of the bonds.