Hybrid laser and air-coupled ultrasonic defect detection of aluminium and CFRP plates by means of Lamb mode

•Non-destructive methods were proposed to identify the defects on metal and composite.•Various systems and configurations are tested and compared to find the effectiveness.•The experimental values of the defect show good agreement with the measured values. This study presents two non-contact systems...

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Veröffentlicht in:Results in physics 2020-12, Vol.19, p.103438, Article 103438
Hauptverfasser: Bustamante, Leslie, Jeyaprakash, N., Yang, Che-Hua
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Sprache:eng
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Zusammenfassung:•Non-destructive methods were proposed to identify the defects on metal and composite.•Various systems and configurations are tested and compared to find the effectiveness.•The experimental values of the defect show good agreement with the measured values. This study presents two non-contact systems – hybrid laser with air-coupled ultrasound and pure air-coupled ultrasonic system for the non-destructive inspection and detection of flaws in CFRP and aluminium plates. B-scans are used to identify the size and location of the defects. The defects are detected through changes in amplitude of the waves passing through them. B-scans, represented as intensity graphs, clearly show the changes in the defect profiles. In addition, there is agreement between the experimental values of the diameter of the defect and the measured values. The two systems and configurations are tested and compared in order to determine their effectiveness in defect identification. The results of this study prove the potential of these non-destructive and non-contact systems for defect detection in aluminium and CFRP composites.
ISSN:2211-3797
2211-3797
DOI:10.1016/j.rinp.2020.103438