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Proceedings Paper

Application of load-dependent Ritz vectors to probabilistic damage detection
Author(s): Hoon Sohn; Kincho H. Law
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Paper Abstract

This paper demonstrates the possibility of incorporating load- dependent Ritz vectors, as an alternative to modal parameters, into a Bayesian probabilistic framework for detecting damages in a structure. Recent research has shown that it is possible to extract load-dependent Ritz vectors from vibration tests. This paper shows that load-dependent Ritz vectors have the following potential advantages for damage detection over modal vectors: (1) In general, load-dependent Ritz vectors are more sensitive to damage than the corresponding modal vectors, and (2) substructures of interest can be made more observable using the load-dependent Ritz vectors generated from particular load patterns. An eight-bay truss structure and a five-story frame example are presented to illustrate the applicability of the proposed approach.

Paper Details

Date Published: 17 June 1998
PDF: 12 pages
Proc. SPIE 3325, Smart Structures and Materials 1998: Smart Systems for Bridges, Structures, and Highways, (17 June 1998); doi: 10.1117/12.310603
Show Author Affiliations
Hoon Sohn, Stanford Univ. (United States)
Kincho H. Law, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 3325:
Smart Structures and Materials 1998: Smart Systems for Bridges, Structures, and Highways
S.-C. Liu, Editor(s)

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