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Proceedings Paper

Monitoring vibration-based structural health using nonlinear approach
Author(s): W. Punurai; T. Chanpheng; T. Sookjit
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Paper Abstract

This paper presents a method for determining the degree of nonlinearity (DON) from the structural vibration data for monitoring the change in health of structures. Using Hilbert Transform of the frequency response function, the DON measures the nonlinearity present in the vibration response. It is shown that a plot of the DON against the magnitude of the motion represents the behavior of a structure. If the structure is damaged during a new striking motion, the DON parameter will deviate from its healthy signature. Data from numerical simulation and experimental measurement were used to evaluate the proposed method.

Paper Details

Date Published: 20 April 2011
PDF: 5 pages
Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 79832S (20 April 2011); doi: 10.1117/12.879783
Show Author Affiliations
W. Punurai, Mahidol Univ. (Thailand)
T. Chanpheng, Kasetsart Univ. (Thailand)
T. Sookjit, Mahidol Univ. (Thailand)


Published in SPIE Proceedings Vol. 7983:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011
H. Felix Wu, Editor(s)

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