Damage Detection and Identification of Finite Element Models Using State-Space Based Signal Processing a Summation of Work Completed at the Lawrence Livermore National Laboratory February 1999 to April 2000

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Until recently, attempts to update Finite Element Models (FEM) of large structures based upon recording structural motions were mostly ad hoc, requiring a large amount of engineering experience and skill. Studies have been undertaken at LLNL to use state-space based signal processing techniques to locate the existence and type of model mismatches common in FEM. Two different methods (Gauss-Newton gradient search and extended Kalman filter) have been explored, and the progress made in each type of algorithm as well as the results from several simulated and one actual building model will be discussed. The algorithms will be examined in detail, ... continued below

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8,600 Kilobytes pages

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Burnett, G.C. April 28, 2000.

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Until recently, attempts to update Finite Element Models (FEM) of large structures based upon recording structural motions were mostly ad hoc, requiring a large amount of engineering experience and skill. Studies have been undertaken at LLNL to use state-space based signal processing techniques to locate the existence and type of model mismatches common in FEM. Two different methods (Gauss-Newton gradient search and extended Kalman filter) have been explored, and the progress made in each type of algorithm as well as the results from several simulated and one actual building model will be discussed. The algorithms will be examined in detail, and the computer programs written to implement the algorithms will be documented.

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8,600 Kilobytes pages

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  • Other Information: PBD: 28 Apr 2000

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  • Report No.: UCRL-ID-139186
  • Grant Number: W-7405-Eng-48
  • DOI: 10.2172/793960 | External Link
  • Office of Scientific & Technical Information Report Number: 793960
  • Archival Resource Key: ark:/67531/metadc733540

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  • April 28, 2000

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  • Oct. 19, 2015, 7:39 p.m.

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  • May 6, 2016, 2:20 p.m.

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Burnett, G.C. Damage Detection and Identification of Finite Element Models Using State-Space Based Signal Processing a Summation of Work Completed at the Lawrence Livermore National Laboratory February 1999 to April 2000, report, April 28, 2000; California. (digital.library.unt.edu/ark:/67531/metadc733540/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.