Continuous damage monitoring of civil structures using vibratory gyroscopes

Arata Masuda; Akira Sone; Shinya Morita

doi:10.1117/12.540063

29 July 2004 Continuous damage monitoring of civil structures using vibratory gyroscopes

Arata Masuda, Akira Sone, Shinya Morita

Proceedings Volume 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; (2004) https://doi.org/10.1117/12.540063
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

In this paper, we present a damage monitoring method to detect and track the evolution of structural damages based on the measurements acquired by vibratory gyroscopes. We propose a modal flexibility-based damage index that quantifies the local bending flexibility of the beam structures by conducting virtual local loading tests. We use vibratory gyroscopes to measure the angular mode shapes which are necessary to assess the proposed damage index. A time-frequency analysis-based simple scheme is developed to identify the time-varying mode shapes to detect and track the evolution of the damage index. Experimental results show that the proposed monitoring method is capable to indicate the location of the damages as well as the time when they occur.

Citation Download Citation

Arata Masuda, Akira Sone, and Shinya Morita "Continuous damage monitoring of civil structures using vibratory gyroscopes", Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); https://doi.org/10.1117/12.540063

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