Vibration-based damage imaging via high-speed cameras with 3D digital image correlation using wavelet transform

Shaohan Wang; Rey-Yie Fong; Fuh-Gwo Yuan

doi:10.1117/12.2585246

22 March 2021 Vibration-based damage imaging via high-speed cameras with 3D digital image correlation using wavelet transform

Shaohan Wang, Rey-Yie Fong, Fuh-Gwo Yuan

Author Affiliations +

Proceedings Volume 11591, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2021; 115911C (2021) https://doi.org/10.1117/12.2585246
Event: SPIE Smart Structures + Nondestructive Evaluation, 2021, Online Only

Abstract

Advances in computer prerformance, optical devices and digital imaging technology have allowed digital image correlation methods to measure the shape and deformation of the vibrating structures. This paper presents a novel vision-based damage detection framework which can eliminate the sinusoidal shaker step along with a magnified, precise modal shape data especially for higher modes that typical DIC algorithm can hardly detect. For this, an aluminum plate has been selected to make a comparative study on the performance of serval vibration-based damage detection techniques, namely, curvature mode shapes , Gapped smoothing techniques Generalized Fractal Dimension, Modal Strain Energy and Wavelet Transform.

Conference Presentation

Citation Download Citation

Shaohan Wang, Rey-Yie Fong, and Fuh-Gwo Yuan "Vibration-based damage imaging via high-speed cameras with 3D digital image correlation using wavelet transform", Proc. SPIE 11591, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2021, 115911C (22 March 2021); https://doi.org/10.1117/12.2585246

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