Hybrid approach for damage detection in flexible structures

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32 Scopus citations


Recently, various system identification approaches have been developed and applied for the detection of damage in flexible structures. In this paper, modal characteristics extracted from vibration tests are used with an original finite element model in an identification approach developed to combine the advantages of two classes of techniques: eigensensitivity and multiple-constraint matrix adjustment. Here, physical property parameters are adjusted, as with eigensensitivity techniques, but model matrix characteristics are employed, as with matrix adjustment methods. The performance of this hybrid technique is shown with its application to data from a flexible-truss laboratory experiment.

Original languageEnglish
Pages (from-to)419-425
Number of pages7
JournalJournal of Guidance, Control, and Dynamics
Issue number3
StatePublished - May 1995

Bibliographical note

Funding Information:
which is Eq. (5) in the main text in the "normal equations" form of the least-squares problem. Acknowledgment The authors are grateful for the support of NASA Langley Research under Grant NAG-1-1246 for this work. References

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Aerospace Engineering
  • Space and Planetary Science
  • Electrical and Electronic Engineering
  • Applied Mathematics


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