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A multivariate, attractor-based approach to structural health monitoring

Publication ,  Journal Article
Moniz, L; Nichols, JM; Nichols, CJ; Seaver, M; Trickey, ST; Todd, MD; Pecora, LM; Virgin, LN
Published in: Journal of Sound and Vibration
May 6, 2005

In this work, recent advances in the use of nonlinear time-series analysis for structural health monitoring are extended to incorporate multivariate data. Structural response data recorded at multiple locations are combined using a multivariate time delay embedding in order to reconstruct the structure's dynamical attractor. Using this approach, a global phase-space representation of the dynamics may be realized for spatially extended systems. A new attractor-based metric, chaotic amplification of attractor distortion (CAAD), is then introduced as a damage sensitive feature. The approach is implemented using data acquired from a composite beam, bolted at either end to steel plates. Degradation to the system is introduced as a loosening of the bolts at one end of the structure. Results based on multivariate attractor reconstruction show a clear ability to detect both the presence and magnitude of damage to the connection. Comparisons are then drawn between this approach and one where the same feature is extracted from attractors reconstructed using data acquired from the individual sensor locations. These features are combined "post-extraction" using a linear discriminant coordinant analysis. Performing the analysis separately at the individual sensor locations results in a significant reduction in discriminating power. © 2004 Elsevier Ltd. All rights reserved.

Duke Scholars

Published In

Journal of Sound and Vibration

DOI

ISSN

0022-460X

Publication Date

May 6, 2005

Volume

283

Issue

1-2

Start / End Page

295 / 310

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Moniz, L., Nichols, J. M., Nichols, C. J., Seaver, M., Trickey, S. T., Todd, M. D., … Virgin, L. N. (2005). A multivariate, attractor-based approach to structural health monitoring. Journal of Sound and Vibration, 283(1–2), 295–310. https://doi.org/10.1016/j.jsv.2004.04.016
Moniz, L., J. M. Nichols, C. J. Nichols, M. Seaver, S. T. Trickey, M. D. Todd, L. M. Pecora, and L. N. Virgin. “A multivariate, attractor-based approach to structural health monitoring.” Journal of Sound and Vibration 283, no. 1–2 (May 6, 2005): 295–310. https://doi.org/10.1016/j.jsv.2004.04.016.
Moniz L, Nichols JM, Nichols CJ, Seaver M, Trickey ST, Todd MD, et al. A multivariate, attractor-based approach to structural health monitoring. Journal of Sound and Vibration. 2005 May 6;283(1–2):295–310.
Moniz, L., et al. “A multivariate, attractor-based approach to structural health monitoring.” Journal of Sound and Vibration, vol. 283, no. 1–2, May 2005, pp. 295–310. Scopus, doi:10.1016/j.jsv.2004.04.016.
Moniz L, Nichols JM, Nichols CJ, Seaver M, Trickey ST, Todd MD, Pecora LM, Virgin LN. A multivariate, attractor-based approach to structural health monitoring. Journal of Sound and Vibration. 2005 May 6;283(1–2):295–310.
Journal cover image

Published In

Journal of Sound and Vibration

DOI

ISSN

0022-460X

Publication Date

May 6, 2005

Volume

283

Issue

1-2

Start / End Page

295 / 310

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences