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Proceedings Paper

Flexibility-based damage identification algorithm embedded in sensor network environment
Author(s): Arata Masuda; Akira Sone; Masashi Yamashita; Yuito Hashimoto
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Paper Abstract

This paper describes a damage identification method for structures mainly subject to bending load, considering the applicability in a decentralized computing environment of wireless sensor networks. A modal flexibility-based damage indices that have simple and intuitive physical interpretation is presented. Since the proposed damage indices are computed using angular mode shapes of the lowest several modes, MEMS gyroscopes are adopted as the sensing device. The damage evaluation algorithm is then modified to a decentralized form, which is to be implemented as the local computation of mode separation at each sensor unit and the global computation of the damage index at the central monitoring station. Experiments using a bolted beam are conducted to show the applicability of the proposed algorithm to the detection of loose bolt failures.

Paper Details

Date Published: 17 May 2005
PDF: 9 pages
Proc. SPIE 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (17 May 2005); doi: 10.1117/12.599505
Show Author Affiliations
Arata Masuda, Kyoto Institute of Technology (Japan)
Akira Sone, Kyoto Institute of Technology (Japan)
Masashi Yamashita, Kyoto Institute of Technology (Japan)
Yuito Hashimoto, Kyoto Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 5765:
Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Masayoshi Tomizuka, Editor(s)

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