Evaluation of bonding quality by using ultrasonic waves

Speaker:
Yılmaz, Bengisu; Kaunas University of Technology; Lithuania

Authors:
Yilmaz, B.; Kaunas University of Technology; Lithuania
Jasiuniene, E.; Kaunas University of Technology; Lithuania
Mazeika, L.; Kaunas University of Technology; Lithuania

ID: ECNDT-0343-2018
Download: PDF
Session: Composite Material - UT 2
Room: G1
Date: 2018-06-14
Time: 14:10 - 14:30

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.