Defect visualization in FRP-bonded concrete by using high speed camera and motion magnification technique

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 publicationProceedings of SPIE
Subtitle of host publicationNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017
PublisherSPIE
ISBN (Print)9781510608238
Publication statusPublished - 19 Apr 2017

Publication series

NameProc. SPIE
Volume10169
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

TitleNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017
PlaceUnited States
CityPortland
Period26 - 29 March 2017

Abstract

High speed camera has the unique capacity of recording fast-moving objects. By using the video processing technique (e.g. motion magnification), the small motions recorded by the high speed camera can be visualized. Combined use of video camera and motion magnification technique is strongly encouraged to inspect the structures from a distant scene of interest, due to the commonplace availability, operational convenience, and cost-efficiency. This paper presents a non-contact method to evaluate the defect in FRP-bonded concrete structural element based on the surface motion analysis of high speed video. In this study, an instant air pressure is used to initiate the vibration of FRP-bonded concrete and cause the distinct vibration for the interfacial defects. The entire structural surface under the air pressure is recorded by a high-speed camera and the surface motion in video is amplified by motion magnification processing technique. The experimental results demonstrate that motion in the interfacial defect region can be visualized in the high-speed video with motion magnification. This validates the effectiveness of the new NDT method for defect detection in the whole composites structural member. The use of high-speed camera and motion magnification technique has the advantages of remote detection, efficient inspection, and sensitive measurement, which would be beneficial to structural health monitoring. © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Research Area(s)

  • Concrete, Defect, Detection, FRP, High speed camera, Motion magnification

Citation Format(s)

Defect visualization in FRP-bonded concrete by using high speed camera and motion magnification technique. / Qiu, Qiwen; Lau, Denvid.

Proceedings of SPIE: Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017. SPIE, 2017. 101692D (Proc. SPIE; Vol. 10169).

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