Experiments for damage location in a damped structure

Suzanne Weaver Smith; David C. Zimmerman; Theodore J. Bartkowicz; Hyoung M. Kim

doi:10.1115/DETC97/VIB-4231

Experiments for damage location in a damped structure

Suzanne Weaver Smith, David C. Zimmerman, Theodore J. Bartkowicz, Hyoung M. Kim

Mechanical and Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In this paper, we present the results of an investigation of significant damping effects and the ability to locate damage. A three-bay, vertically cantilevered laboratory truss testbed was developed to exhibit beam-like response for the first three modes (a pair of first bending modes in orthogonal directions and a torsional mode). Truss members were removed from the testbed to simulate various damage scenarios with reduced stiffness. In addition, up to four visco-elastic damping struts were placed in the truss testbed in various configurations to affect the damping of certain modes of the structure. A comprehensive test matrix of damping and damage effects was designed and completed to construct the data base for the damping and damage identification evaluations. Two representative visco-elastic struts were also tested individually to determine their stiffness and damping characteristics. The damage detection process used the differences between pre- and post-damage vibration characteristics, along with a structural model, to successfully locate and quantify the extent of structural damage in all cases. Damping matrix models were also identified and evaluated.

Original language	English
Title of host publication	16th Biennial Conference on Mechanical Vibration and Noise
ISBN (Electronic)	9780791880432
DOIs	https://doi.org/10.1115/DETC97/VIB-4231
State	Published - 1997
Event	ASME 1997 Design Engineering Technical Conferences, DETC 1997 - Sacramento, United States Duration: Sep 14 1997 → Sep 17 1997

Publication series

Name	Proceedings of the ASME Design Engineering Technical Conference
Volume	1D-1997

Conference

Conference	ASME 1997 Design Engineering Technical Conferences, DETC 1997
Country/Territory	United States
City	Sacramento
Period	9/14/97 → 9/17/97

Bibliographical note

Publisher Copyright:
© 1997 American Society of Mechanical Engineers (ASME). All rights reserved.

Funding

The first two authors efforts were partially supported by McDonnell Douglas Aerospace, Houston, TX. The authors would like to thank Alex Chapman, a University of Kentucky undergraduate student, for his work in testing the truss and performing the modal identification. The authors also acknowledge the work of Raul Blanco, a University of Houston Masters student, who performed the individual strut tests and analysis.

Funders	Funder number
University of Kentucky
McDonnell Douglas Aerospace

ASJC Scopus subject areas

Mechanical Engineering
Computer Graphics and Computer-Aided Design
Computer Science Applications
Modeling and Simulation

Access to Document

10.1115/DETC97/VIB-4231

Cite this

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title = "Experiments for damage location in a damped structure",

abstract = "In this paper, we present the results of an investigation of significant damping effects and the ability to locate damage. A three-bay, vertically cantilevered laboratory truss testbed was developed to exhibit beam-like response for the first three modes (a pair of first bending modes in orthogonal directions and a torsional mode). Truss members were removed from the testbed to simulate various damage scenarios with reduced stiffness. In addition, up to four visco-elastic damping struts were placed in the truss testbed in various configurations to affect the damping of certain modes of the structure. A comprehensive test matrix of damping and damage effects was designed and completed to construct the data base for the damping and damage identification evaluations. Two representative visco-elastic struts were also tested individually to determine their stiffness and damping characteristics. The damage detection process used the differences between pre- and post-damage vibration characteristics, along with a structural model, to successfully locate and quantify the extent of structural damage in all cases. Damping matrix models were also identified and evaluated.",

author = "Smith, {Suzanne Weaver} and Zimmerman, {David C.} and Bartkowicz, {Theodore J.} and Kim, {Hyoung M.}",

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year = "1997",

doi = "10.1115/DETC97/VIB-4231",

language = "English",

series = "Proceedings of the ASME Design Engineering Technical Conference",

booktitle = "16th Biennial Conference on Mechanical Vibration and Noise",

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Smith, SW, Zimmerman, DC, Bartkowicz, TJ & Kim, HM 1997, Experiments for damage location in a damped structure. in 16th Biennial Conference on Mechanical Vibration and Noise. Proceedings of the ASME Design Engineering Technical Conference, vol. 1D-1997, ASME 1997 Design Engineering Technical Conferences, DETC 1997, Sacramento, United States, 9/14/97. https://doi.org/10.1115/DETC97/VIB-4231

Experiments for damage location in a damped structure. / Smith, Suzanne Weaver; Zimmerman, David C.; Bartkowicz, Theodore J. et al.
16th Biennial Conference on Mechanical Vibration and Noise. 1997. (Proceedings of the ASME Design Engineering Technical Conference; Vol. 1D-1997).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Experiments for damage location in a damped structure

Abstract

Publication series

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Bibliographical note

Funding

ASJC Scopus subject areas

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