Investigation of Mode Conversion in Ultrasonic Air-coupled Non-destructive Testing

Kazys, R., Demcenko, A. , Mazeika, L., Sliteris, R. and Zukauskas, E. (2008) Investigation of Mode Conversion in Ultrasonic Air-coupled Non-destructive Testing. In: Emerging Technologies in ETNDT . 4th International Conference on Emerging Technologies in Non-Destructive Testing, ETNDT 4, Stuttgart, Germany, 2-4 April 2007,

Abstract

The paper deals with development and investigation of air-coupled ultrasonic techniques for inspection of components of modern aircrafts such as carbon/glass fibre reinforced plastics, fibre metal laminates (GLARE) and honeycombs. In the work interaction of ultrasonic waves with delamination type defect and mode conversions were investigated. The mode conversions were investigated in the case of two different techniques - the through-transmission technique and single-side access technique with exploitation of Lamb waves. It was demonstrated that in the case of the trough-transmission technique and application of focused transducers the additional Lamb waves are generated, which causes leaky waves in air affecting B and C-scan images of defect.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Demcenko, Dr Andriejus
• Authors: Kazys, R., Demcenko, A., Mazeika, L., Sliteris, R., and Zukauskas, E.
• College/School: College of Science and Engineering > School of Engineering > Biomedical Engineering