Use of response surface metamodels for damage identification of a simple nonlinear system.

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The need for low order models capable of performing damage identification has become apparent in many structural dynamics applications where structural health monitoring and damage prognosis programs are implemented. These programs require that damage identification routines have low computational requirements and be reliable with some quantifiable degree of accuracy. Response surface metamodels (RSMs) are proposed to fill this need. Popular in the fields of chemical and industrial engineering, RSMs have only recently been applied in the field of structural dynamics and to date there have been no studies which fully demonstrate the potential of these methods. In this thesis, several ... continued below

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10 p.

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Cundy, A. L. (Amanda L.); Hemez, F. M. (François M.); Inman, D. J. & Park, G. H. (Gyu Hae) January 1, 2003.

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Description

The need for low order models capable of performing damage identification has become apparent in many structural dynamics applications where structural health monitoring and damage prognosis programs are implemented. These programs require that damage identification routines have low computational requirements and be reliable with some quantifiable degree of accuracy. Response surface metamodels (RSMs) are proposed to fill this need. Popular in the fields of chemical and industrial engineering, RSMs have only recently been applied in the field of structural dynamics and to date there have been no studies which fully demonstrate the potential of these methods. In this thesis, several RSMs are developed in order to demonstrate the potential of the methodology. They are shown to be robust to noise (experimental variability) and have success in solving the damage identification problem, both locating and quantifying damage with some degree of accuracy, for both linear and nonlinear systems. A very important characteristic of the RSMs developed in this thesis is that they require very little information about the system in order to generate relationships between damage indicators and measureable system responses for both linear and nonlinear structures. As such, the potential of these methods for damage identification has been demonstrated and it is recommended that these methods be developed further.

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10 p.

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  • Submitted to: DAMAS 2003, International Conference on Damage Assessment of Structures, July 1-3, 2003, University of Southampton, UK

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  • Report No.: LA-UR-03-1182
  • Grant Number: none
  • DOI: 10.2172/812182 | External Link
  • Office of Scientific & Technical Information Report Number: 976563
  • Archival Resource Key: ark:/67531/metadc933169

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 2003

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 1:45 p.m.

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Cundy, A. L. (Amanda L.); Hemez, F. M. (François M.); Inman, D. J. & Park, G. H. (Gyu Hae). Use of response surface metamodels for damage identification of a simple nonlinear system., article, January 1, 2003; United States. (digital.library.unt.edu/ark:/67531/metadc933169/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.