| Title |
Advanced ultrasonic NDT for weak bond detection in composite-adhesive bonded structures / |
| Authors |
Yilmaz, Bengisu ; Jasiūnienė, Elena |
| DOI |
10.1016/j.ijadhadh.2020.102675 |
| Full Text |
|
| Is Part of |
International journal of adhesion and adhesives.. Oxford : Elsevier. 2020, vol. 102, art. no. 102675, p. 1-10.. ISSN 0143-7496. eISSN 1879-0127 |
| Keywords [eng] |
acoustic microscopy ; adhesive joints ; composites ; non-destructive testing |
| Abstract [eng] |
Weak bond detection in composite-adhesive joints is a highly challenging task in the non-destructive testing (NDT) community. This paper aims to evaluate the bonding quality in composite-adhesive bonded structures with high-frequency high-resolution acoustic microscopy. Carbon fibre reinforced epoxy-epoxy bonded single-lap joints containing three different bonding quality -debonding, weak bond with less and more contamination, in addition to perfect bond were investigated. Shape-based feature extraction algorithm in the frequency domain was developed in order to detect weak bonds. The results show that high frequency focused transducers used in acoustic microscopy is a great choice to visualize interface quality in bonded structures. Developed post-processing algorithm performs well on the detection of weak bond, independent from the perfect bond inspection results. |
| Published |
Oxford : Elsevier |
| Type |
Journal article |
| Language |
English |
| Publication date |
2020 |
| CC license |
|
