In this paper, time domain data from piezoelectric active-sensing techniques is utilized for structural health monitoring (SHM) applications. Piezoelectric transducers have been increasingly used in SHM because of their proven advantages. Especially, their ability to provide known repeatable inputs for active-sensing approaches to SHM makes the development of SHM signal processing algorithms more efficient and less susceptible to operational and environmental variability. However, to date, most of these techniques have been based on frequency domain analysis, such as impedance-based or high-frequency response functions-based SHM techniques. Even with Lamb wave propagations, most researchers adopt frequency domain or other analysis for damage-sensitive feature extraction. Therefore, this study investigates the use of a time-series predictive model which utilizes the data obtained from piezoelectric active-sensors. In particular, time series autoregressive models with exogenous inputs are implemented in order to extract damage-sensitive features from the measurements made by piezoelectric active-sensors. The test structure considered in this study is a composite plate, where several damage conditions were artificially imposed. The performance of this approach is compared to that of analysis based on frequency response functions and its capability for SHM is demonstrated.
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August 2012
Research Papers
Use of Time-Series Predictive Models for Piezoelectric Active-Sensing in Structural Health Monitoring Applications
Kevin M. Farinholt,
Kevin M. Farinholt
The Engineering Institute, Los Alamos National Laboratory, Los Alamos
, NM 87545, USA
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Charles R. Farrar,
Charles R. Farrar
The Engineering Institute, Los Alamos National Laboratory, Los Alamos
, NM 87545, USA
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Jung-Ryul Lee
Jung-Ryul Lee
Department of Aerospace Engineering and LANL-CBNU Engineering Institute Korea, ChonBuk National University, Jeonju
, 561-756, South Korea
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Kevin M. Farinholt
The Engineering Institute, Los Alamos National Laboratory, Los Alamos
, NM 87545, USA
Charles R. Farrar
The Engineering Institute, Los Alamos National Laboratory, Los Alamos
, NM 87545, USA
Jung-Ryul Lee
Department of Aerospace Engineering and LANL-CBNU Engineering Institute Korea, ChonBuk National University, Jeonju
, 561-756, South Korea
J. Vib. Acoust. Aug 2012, 134(4): 041014 (10 pages)
Published Online: June 1, 2012
Article history
Received:
September 2, 2010
Revised:
February 27, 2012
Online:
June 1, 2012
Published:
June 1, 2012
Citation
Figueiredo, E., Park, G., Farinholt, K. M., Farrar, C. R., and Lee, J. (June 1, 2012). "Use of Time-Series Predictive Models for Piezoelectric Active-Sensing in Structural Health Monitoring Applications." ASME. J. Vib. Acoust. August 2012; 134(4): 041014. https://doi.org/10.1115/1.4006410
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