Structural damage detection using the holder exponent.

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This paper implements a damage detection strategy that identifies damage sensitive features associated with nonlinearities. Some rion-linezlrities result from discontinuities introduced into the data by certain types of darnage. These discontinuities may also result from noise in the measured dynamic response data or can be caused by random excitation of the system. The Holder Exponent, which is a measure of the degree to which a signal is differentiable, is used to detect the discontinuities. By studying the Holder bponent as a function af time, a statistical model is developed that classifies changes in the Holder Exponent that are associated with ... continued below

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8 p.

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Farrar, C. R. (Charles R.); Do, N. B. (Nguyen B.); Green, S. R. (Scott R.) & Schwartz, T. A. (Timothy A.) January 1, 2002.

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Description

This paper implements a damage detection strategy that identifies damage sensitive features associated with nonlinearities. Some rion-linezlrities result from discontinuities introduced into the data by certain types of darnage. These discontinuities may also result from noise in the measured dynamic response data or can be caused by random excitation of the system. The Holder Exponent, which is a measure of the degree to which a signal is differentiable, is used to detect the discontinuities. By studying the Holder bponent as a function af time, a statistical model is developed that classifies changes in the Holder Exponent that are associated with clamage-induced discontinuities. The results show that for certain cases, the Holder Exponent is an effective technique to detect damage.

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8 p.

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  • Submitted to: IMAC Conference, Orlando-Kissimmee, Florida, February 3-6, 2003

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  • Report No.: LA-UR-02-5690
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976337
  • Archival Resource Key: ark:/67531/metadc930974

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  • January 1, 2002

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 5:09 p.m.

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Farrar, C. R. (Charles R.); Do, N. B. (Nguyen B.); Green, S. R. (Scott R.) & Schwartz, T. A. (Timothy A.). Structural damage detection using the holder exponent., article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc930974/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.