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

页数：10

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