Laser-based vibration measurement using diffractive beam samplers for vibration monitoring of large-scale bridges

https://doi.org/10.31130/ud-jst.2023.563E
Abstract: 118 | PDF: 64

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Author

  • Le Phuong Hoang
    Square Lab, Hanoi University of Science and Technology, Hanoi, Vietnam
    Xuan Binh Cao
    Square Lab, Hanoi University of Science and Technology; School of Mechanical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
    Bao Anh Nguyen
    Provincial Inspection of Kon Tum, Kontum, Vietnam
    Hoang Nam Phan
    The University of Danang - University of Science and Technology, Danang, Vietnam
    Phuong Hoa Hoang
    The University of Danang - University of Science and Technology, Danang, Vietnam
    Duy Hoa Pham
    Hanoi University of Civil Engineering, Hanoi, Vietnam

Keywords:

Laser-based vibration measurement
diffractive beam sampler
large-scale bridges
laser pendulum
image sensor

Abstract

This paper introduces an innovative design for a laser-based apparatus employing diffractive beam sampling technology, with the primary purpose of characterizing vibration frequencies induced within large-scale bridges. The functioning principle of the device hinges upon its ability to discern minute alterations in the relative positions of a subset of the laser beam, resulting from the oscillatory behavior of a laser pendulum mechanism. The captured dynamic variations are seamlessly integrated into a real-time monitoring framework through the utilization of an adept image sensor, complemented by sophisticated software functionalities. Noteworthy for its amalgamation of straightforward implementation and remarkable precision, the proposed methodology stands as a potent instrument poised to ensure the secure and robust surveillance of the structural well-being of large-scale bridges.

References

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Published

Sep 30, 2023
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How to Cite
Hoang, L. P., X. B. Cao, B. A. Nguyen, H. N. Phan, P. H. Hoang, and D. H. Pham. “Laser-Based Vibration Measurement Using Diffractive Beam Samplers for Vibration Monitoring of Large-Scale Bridges”. The University of Danang - Journal of Science and Technology, vol. 21, no. 9.3, Sept. 2023, pp. 24-26, doi:10.31130/ud-jst.2023.563E.

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