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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.24 No.5
- 발행연도
- 2019.1
- 수록면
- 607 - 616 (10page)
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초록· 키워드
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The video deflectometer based on digital image correlation is a non-contacting optical measurement method which has become a useful tool for characterization of the vertical deflections of large structures. In this study, a novel imaging model has been established which considers the variations of pitch angles in the full image. The new model allows deflection measurement at a wide working distance with high accuracy. A monocular video deflectometer has been accordingly developed with an inclination sensor, which facilitates dynamic determination of the orientations and rotation of the optical axis of the camera. This layout has advantages over the video deflectometers based on theodolites with respect to convenience. Experiments have been presented to show the accuracy of the new imaging model and the performance of the monocular video deflectometer in outdoor applications. Finally, this equipment has been applied to the measurement of the vertical deflection of Yingwuzhou Yangtze River Bridge in real time at a distance of hundreds of meters. The results show good agreement with the embedded GPS outputs.
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참고문헌 (32)
참고문헌 신청
Brown, C. J. / 2015 / Deflections and frequency responses of the forth road bridge measure by GPS / Thomas Telford :479~486
Y.L. Cai / 2016 / Characterization of the deformation behaviors associated with the serrated flow of a 5456 Al-based alloy using two orthogonal digital image correlation systems / Materials Science and Engineering: A 664:155~164
De, R. G. / 2003 / Experimental study of a prestressed trough bridge for high speed railway / Eng. Mech 20(6):99~105
Dongming Feng / 2015 / A Vision-Based Sensor for Noncontact Structural Displacement Measurement / Sensors 15(7):16557~16575
Maria Q. Feng / 2015 / Nontarget Vision Sensor for Remote Measurement of Bridge Dynamic Response / Journal of Bridge Engineering 20(12):04015023
Y.L. Cai / 2016 / Characterization of the deformation behaviors associated with the serrated flow of a 5456 Al-based alloy using two orthogonal digital image correlation systems / Materials Science and Engineering: A 664:155~164
De, R. G. / 2003 / Experimental study of a prestressed trough bridge for high speed railway / Eng. Mech 20(6):99~105
Dongming Feng / 2015 / A Vision-Based Sensor for Noncontact Structural Displacement Measurement / Sensors 15(7):16557~16575
Maria Q. Feng / 2015 / Nontarget Vision Sensor for Remote Measurement of Bridge Dynamic Response / Journal of Bridge Engineering 20(12):04015023
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