Techno Press
Techno Press

Smart Structures and Systems   Volume 20, Number 6, December 2017, pages 759-767
DOI: http://dx.doi.org/10.12989/sss.2017.20.6.759
 
A comprehensive study on active Lamb wave-based damage identification for plate-type structures
Zijian Wang, Pizhong Qiao and Binkai Shi

 
Abstract     [Full Text]
    Wear and aging associated damage is a severe problem for safety and maintenance of engineering structures. To acquire structural operational state and provide warning about different types of damage, research on damage identification has gained increasing popularity in recent years. Among various damage identification methods, the Lamb wave-based methods have shown promising suitability and potential for damage identification of plate-type structures. In this paper, a comprehensive study was presented to elaborate four remarkable aspects regarding the Lamb wave-based damage identification method for plate-type structures, including wave velocity, signal denoising, image reconstruction, and sensor layout. Conclusions and path forward were summarized and classified serving as a starting point for research and application in this area.
 
Key Words
    Lamb wave; damage identification; structural health monitoring; wavelet denoising; finite element modeling; sensor array; beamforming
 
Address
Zijian Wang: Department of Dam Safety Management, Nanjing Hydraulic Research Institute, Nanjing, 210029, China
Pizhong Qiao: Department of Civil and Environmental Engineering and Composite Materials and Engineering Center,
Washington State University, Pullman, WA, 99164-2910, USA
Binkai Shi: School of Mechanics and Materials, Hohai University, Nanjing, 210098, PR China
 

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