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NDT.net Issue - 2018-08 - Articles
NDT.net Issue: 2018-08
Publication: 12th European Conference on Non-Destructive Testing (ECNDT 2018), Gothenburg 2018, June 11-15 (ECNDT 2018)
Session: Composite Material - UT
ARTICLE

Evaluation of bonding quality by using ultrasonic waves

Bengisu Yilmaz3, Elena Jasiuniene28, Liudas Mažeika54
Ultrasound Institute; Ultrasound Institute at Kaunas University of Technology189, Kaunas, Lithuania

Abstract: Adhesive bonding with substantial weight saving advantage has significant potential for the aerospace industry. An essential step to be able to use this potential is the determination of bonding quality of the adhesive joints by non-destructive testing. Among various NDT methods, the ultrasonic inspection is a well-known and established technique to evaluate bonding quality. Despite the remarkable number of studies has been conducted using ultrasonic inspection, evaluating bonding quality of the adhesive joints is still a challenge. In this work, the propagation of the ultrasonic waves through the single-lap adhesive joints with aluminium alloy and carbon fibre reinforced composite laminate adherends has been investigated. Different case studies, - three different quality interfaces have been analysed. The numerical analysis for each case has been performed by semi analytical finite element method and by finite element method based simulations. The ability of the ultrasonic wave parameters to be used for the evaluation of the bonding quality was evaluated.

Keywords: composite materials (158), Ultrasonics (229), Adhesives and Bonding (20),
*Keywords are freely formed keywords from the authors and thus you may Search also for similar terms.

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