NTRS - NASA Technical Reports Server

Back to Results
Selection of experimental modal data sets for damage detection via model updateWhen using a finite element model update algorithm for detecting damage in structures, it is important that the experimental modal data sets used in the update be selected in a coherent manner. In the case of a structure with extremely localized modal behavior, it is necessary to use both low and high frequency modes, but many of the modes in between may be excluded. In this paper, we examine two different mode selection strategies based on modal strain energy, and compare their success to the choice of an equal number of modes based merely on lowest frequency. Additionally, some parameters are introduced to enable a quantitative assessment of the success of our damage detection algorithm when using the various set selection criteria.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Doebling, S. W.
(NASA Headquarters Washington, DC United States)
Hemez, F. M.
(NASA Headquarters Washington, DC United States)
Barlow, M. S.
(NASA Headquarters Washington, DC United States)
Peterson, L. D.
(NASA Headquarters Washington, DC United States)
Farhat, C.
(Colorado Univ. Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA(ASME)ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 34th and AIAA/ASME Adaptive Structures Forum, La Jolla, CA, Apr. 19-22, 1993, Technical Papers. Pt. 3 (A93-33876 1
Publisher: American Institute of Aeronautics and Astronautics
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 93-1481
Accession Number
Funding Number(s)
Distribution Limits

Available Downloads

There are no available downloads for this record.
No Preview Available