Advanced ultrasonic NDT for weak bond detection in composite-adhesive bonded structures

被引：53
|
作者：
Yilmaz, Bengisu [1 ]
Jasiuniene, Elena [1 ,2 ]
机构：
[1] Kaunas Univ Technol, Prof K Barsauskas Ultrasound Res Inst, K Barsausko St 59, LT-51423 Kaunas, Lithuania
[2] Kaunas Univ Technol, Dept Elect Engn, Studentu St 48, LT-51367 Kaunas, Lithuania
来源：
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 2020年 / 102卷
基金：
欧盟地平线“2020”;
关键词：
Composites; Non-destructive testing; Acoustic microscopy; Adhesive joints; KISSING BONDS; JOINTS; REDUCTION; TOUGHNESS;
D O I：
10.1016/j.ijadhadh.2020.102675
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
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.
引用
收藏
页数：10
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