A novel two-level approach to defect detection in braided CFRP using air-coupled ultrasonic testing

Chenchen Zhang,Yinghong Zhang,Dianzi Liu, Xiaojia Zhang,Xianwei Wu,Zhenghua Qian,Xiangyu Li

Ultrasonics（2023）

Cited 6|Views20

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Abstract

•A two-level identification method is proposed for defect detection in braided CFRPs.•The minimum detectable diameter of 1–2 mm in braided CFRP structures is achieved.•Pressure attenuation ratio of two types of CFRPs lessens as defect depth increases.•Shadows around defects are eliminated for reliable detection by the proposed metho.

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Key words

Air-coupled ultrasonic testing,Braided CFRP,Two-dimensional variational mode decomposition,Defect identification

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