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Singular Value Decomposition Based Algorithm for Damage Detection in Composite Structures

[+] Author Affiliations
Conner Shane, Ratneshwar Jha

Clarkson University, Potsdam, NY

Paper No. SMASIS2008-597, pp. 255-263; 9 pages
doi:10.1115/SMASIS2008-597
From:
  • ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2
  • Ellicott City, Maryland, USA, October 28–30, 2008
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-4332-1 | eISBN: 978-0-7918-3839-6
  • Copyright © 2008 by ASME

abstract

This study presents a damage detection algorithm based on the proper orthogonal decomposition technique for health monitoring of composite structures. A finite element model of a carbon/epoxy composite plate is used to generate vibration data for healthy and damaged structures. Varying levels of stiffness reduction for the elements in the damaged zone of the structure simulate impact damage. Three damage locations (center of plate, fixed end, and free end) with three damage levels for each location are investigated. Different random excitation inputs are used to introduce variation in the loading conditions of the model. The results clearly show that damage presence, location, and severity can be detected using this algorithm.

Copyright © 2008 by ASME

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