Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5014728 | International Journal of Adhesion and Adhesives | 2017 | 6 Pages |
Abstract
This paper presents a study of the detectability of the level of adhesion at the Aluminum/Epoxy interface using the propagation of ultrasonic guided waves. The topic is relevant to the long-range ultrasonic inspection of structural adhesive bonding. The samples considered are epoxy-coated aluminum: samples were fabricated with partially or totally crosslinked epoxy groups and with different surface treatments of aluminum substrates. Experimentally measured dispersion curves and attenuation coefficients of a selected mode are used to quantitatively track changes at the epoxy-aluminum interface. The results show that modes could be very sensitive to the nature of the interface, that is to say to the level of adhesion, if properly selected. Numerical predictions via the Jones rheological model and their comparison with experimental results highlight three adhesion levels: weak, medium and high one.
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Authors
Camille Gauthier, Mounsif Ech-Cherif El-Kettani, Jocelyne Galy, Mihai Predoi, Damien Leduc, Jean-Louis Izbicki,