Abstract
Two classes of aluminum-to-aluminum adhesive bonds were ultrasonically tested by the pulse-echo technique. The two classes differed in the surface preparation of the adherends prior to bonding, resulting in different interfacial properties of the joints. These properties have a crucial effect on the long-term adhesive properties of the specimens.
Features extracted from the ultrasonic echo signals were found to be significantly sensitive to the interfacial characteristics of the joints. This sensitivity was verified by means of conventional statistical tests.
Based on the ultrasonic features data, the application of basic pattern recognition techniques enabled the classification of the joints according to the surface preparation of the adherends, and the evaluation of the upper bound for the probability of mis-classification of the specimens. The results imply the possibility of ultrasonic adhesive, rather then cohesive, bond classification.
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Dickstein, P. (1990). Ultrasonic Verification of Surface Treatment Adequacy in Metal-to-Metal Adhesive Joints. In: Meguid, S.A. (eds) Surface Engineering. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0773-7_14
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DOI: https://doi.org/10.1007/978-94-009-0773-7_14
Publisher Name: Springer, Dordrecht
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