Piezoelectric wafer active sensors (PWAS) have been the widely used in impedance based damage detection applications. A most important matter in impedance method is applied voltage to PWAS and measuring current in PWAS. In this paper, for modeling of impedance based structural health monitoring, a 3D spectral finite element method (SFEM) is developed for plate structure with PWAS. Because of high frequency application of impedance method, high degree of freedom (DOF) is needed for modeling of impedance of PWAS attached on the plate. Uncertainty of plate and PWAS parameters could be effect on the natural frequencies of structure. So, impedance signal of modeling would be different based on uncertainty parameters. Polynomial chaos expansion (PC) is a probabilistic method consisting in the projection of the model output on a basis of orthogonal stochastic polynomials in the random inputs. In this paper, PCE is used for sensitivity analysis of the electromechanical impedance of plate structure with PWAS.
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ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 21–24, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5020-6
PROCEEDINGS PAPER
Polynomial Chaos Expansion Sensitivity Analysis for Electromechanical Impedance of Plate
Firooz Bakhtiari-Nejad,
Firooz Bakhtiari-Nejad
Amirkabir University of Technology, Tehran, Iran
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Naserodin Sepehry,
Naserodin Sepehry
Amirkabir University of Technology, Tehran, Iran
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Mahnaz Shamshirsaz
Mahnaz Shamshirsaz
Amirkabir University of Technology, Tehran, Iran
Search for other works by this author on:
Firooz Bakhtiari-Nejad
Amirkabir University of Technology, Tehran, Iran
Naserodin Sepehry
Amirkabir University of Technology, Tehran, Iran
Mahnaz Shamshirsaz
Amirkabir University of Technology, Tehran, Iran
Paper No:
DETC2016-59129, V008T10A037; 8 pages
Published Online:
December 5, 2016
Citation
Bakhtiari-Nejad, F, Sepehry, N, & Shamshirsaz, M. "Polynomial Chaos Expansion Sensitivity Analysis for Electromechanical Impedance of Plate." Proceedings of the ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 8: 28th Conference on Mechanical Vibration and Noise. Charlotte, North Carolina, USA. August 21–24, 2016. V008T10A037. ASME. https://doi.org/10.1115/DETC2016-59129
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