Use of high-speed camera for defect detection in FRP bonded system under different excitation methods

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Detail(s)

Original languageEnglish
Title of host publicationNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV
EditorsTzu-Yang Yu, H. Felix Wu, Peter J. Shull, Andrew L. Gyekenyesi
PublisherSPIE
Volume11380
ISBN (Electronic)9781510635388
ISBN (Print)9781510635371
Publication statusPublished - 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

TitleNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV 2020
PlaceUnited States
Period27 April - 8 May 2020

Abstract

Fiber reinforced polymers (FRP) strengthening has been demonstrated as an effective method to reinforce or repair the structural elements in the application of civil engineering. One issue that affects the effectiveness of FRP bonded system is the interfacial integrity between FRP and bonded substrate. The interfacial defect can cause the deterioration of the performance of strengthened/repaired structures, which should be identified as early as possible. Compared with conventional non-destructive techniques (NDTs), image acquisition method, such as high-speed camera, has received increasing attention due to the advantages of its non-sensor/wiring requirements. Coupled with proper video processing techniques, the high-speed camera has been reported as an effective tool in the interfacial defect detection for FRP bonded system. Moreover, the accuracy of results from high-speed camera is sensitive to the excitation resources applied on the FRP bonded system, since the vibration response of FRP varies under different excitation methods. In this research, three typical excitation methods for FRP bonded system, i.e. mechanical impact excitation, air pressure excitation and acoustic excitation, were tested to evaluate their effects on the detection accuracy using high-speed camera in FRP bonded system. The findings provide practical recommendations on the selection of proper excitation methods for the applications of high-speed cameras in the defect detection of FRP bonded system.

Research Area(s)

  • Fiber reinforced polymers, High speed cameras, Imaging systems, Defect detection

Citation Format(s)

Use of high-speed camera for defect detection in FRP bonded system under different excitation methods. / Qin, Renyuan; Qiu, Qiwen; Lau, Denvid.

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV. ed. / Tzu-Yang Yu; H. Felix Wu; Peter J. Shull; Andrew L. Gyekenyesi. Vol. 11380 SPIE, 2020. 1138017 (Proceedings of SPIE - The International Society for Optical Engineering).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review