Adhesives are used to join some critical structural parts of aircraft, for example, the wing panel. The inspection of such joints, to detect degradation in the adhesive and the bond line is critical to ensure the operational safety of aircraft. Ultrasonic guided waves provide an effective tool for non-destructive inspection. Guided waves have a multi-modal nature which permits stress wave energy to be directed to any point in the structure and over a long distance. A theoretical study for understanding the ultrasonic guided wave propagation characteristics through an adhesively bonded lap joint can help us in the identification of physical features to guide inspection. With the use of a hybrid analytical method and a numerical approach, guided wave reflection and transmission through an adhesively bonded lap joint with interfacial and cohesive weakness was studied. The analytical method helps select a suitable guided wave mode and the numerical method provides a benchmark/visualization with which the experimental results can be compared.
Inspection of adhesively bonded joints using ultrasonic guided waves
Prüfung von Klebverbindungen mittels geführter Ultraschallwellen
2008
6 Seiten, 4 Bilder, 10 Quellen
Conference paper
Storage medium
English
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