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Structural Health Monitoring of Large StructuresThis paper describes a damage detection and health monitoring method that was developed for large space structures using on-orbit modal identification. After evaluating several existing model refinement and model reduction/expansion techniques, a new approach was developed to identify the location and extent of structural damage with a limited number of measurements. A general area of structural damage is first identified and, subsequently, a specific damaged structural component is located. This approach takes advantage of two different model refinement methods (optimal-update and design sensitivity) and two different model size matching methods (model reduction and eigenvector expansion). Performance of the proposed damage detection approach was demonstrated with test data from two different laboratory truss structures. This space technology can also be applied to structural inspection of aircraft, offshore platforms, oil tankers, ridges, and buildings. In addition, its applications to model refinement will improve the design of structural systems such as automobiles and electronic packaging.
Document ID
19960021773
Document Type
Conference Paper
Authors
Kim, Hyoung M.
(McDonnell-Douglas Aerospace Houston, TX United States)
Bartkowicz, Theodore J.
(McDonnell-Douglas Aerospace Houston, TX United States)
Smith, Suzanne Weaver
(Kentucky Univ. Lexington, KY United States)
Zimmerman, David C.
(Houston Univ. TX United States)
Date Acquired
August 17, 2013
Publication Date
May 1, 1994
Publication Information
Publication: Dual-Use Space Technology Transfer Conference and Exhibition
Volume: 1
Subject Category
Structural Mechanics
Accession Number
96N25048
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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