Comparison of damage identification algorithms on experimental modal data from a bridge

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Over the past 25 years detecting damage in a structure from changes in dynamic parameters has received a considerable amount of attention from the aerospace, civil, and mechanical engineering communities. The general idea is that changes in the structure`s physical properties (i.e., stiffness, mass, and/or damping) will, in turn, alter the dynamic characteristics (i.e., resonant frequencies, modal damping, and mode shapes) of the structure. Properties such as the flexibility matrix, stiffness matrix, and mode shape curvature, which are obtained from modal parameters, have shown promise for localizing structural damage. In this paper, several different techniques for damage assessment are demonstrated ... continued below

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9 p.

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Jauregui, D.V. & Farrar, C.R. December 31, 1995.

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Description

Over the past 25 years detecting damage in a structure from changes in dynamic parameters has received a considerable amount of attention from the aerospace, civil, and mechanical engineering communities. The general idea is that changes in the structure`s physical properties (i.e., stiffness, mass, and/or damping) will, in turn, alter the dynamic characteristics (i.e., resonant frequencies, modal damping, and mode shapes) of the structure. Properties such as the flexibility matrix, stiffness matrix, and mode shape curvature, which are obtained from modal parameters, have shown promise for localizing structural damage. In this paper, several different techniques for damage assessment are demonstrated and compared using experimental modal data from an undamaged and damaged bridge.

Physical Description

9 p.

Notes

OSTI as DE96005350

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  • 14. international modal analysis conference, Dearborn, MI (United States), 12-15 Feb 1996

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  • Other: DE96005350
  • Report No.: LA-UR--95-3945
  • Report No.: CONF-960238--6
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 188558
  • Archival Resource Key: ark:/67531/metadc668451

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 25, 2016, 2:07 p.m.

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Jauregui, D.V. & Farrar, C.R. Comparison of damage identification algorithms on experimental modal data from a bridge, article, December 31, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc668451/: accessed August 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.