A Two-Step Structural Damage Detection Approach With Limited Instrumentation

[+] Author and Article Information
Hyoung M. Kim, T. J. Bartkowicz

McDonnell Douglas Aerospace, 13100 Space Center Blvd., Houston, TX 77059

J. Vib. Acoust 119(2), 258-264 (Apr 01, 1997) (7 pages) doi:10.1115/1.2889712 History: Received June 01, 1994; Revised September 01, 1995; Online February 26, 2008


This paper describes a two-step damage detection and health monitoring approach that was developed for large and complex structures with a limited number of measurements. The first step identifies a general area of structural damage using the optimal model update method and a hybrid model reduction/eigenvector expansion technique. The second step locates a specific damaged structural component using a design sensitivity technique based on a priori information from the first damage detection step. Performance of the proposed damage detection approach was demonstrated with testing and analysis of a ten-bay hexagonal truss structure. Procedures developed for the damage detection are also directly applicable to test/dynamic math model correlation when the number of measurements is limited.

Copyright © 1997 by The American Society of Mechanical Engineers
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