Low-velocity impact source localization in a composite sandwich structure using a broadband piezoelectric sensor network

Sikdar, Shirsendu, Mirgal, Paresh and Banerjee, Sauvik 2022. Low-velocity impact source localization in a composite sandwich structure using a broadband piezoelectric sensor network. Composite Structures 291 , 115619. 10.1016/j.compstruct.2022.115619

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Abstract

An online structural health monitoring strategy for real-time impact source localisation in composite sandwich structure (CSS) is presented in this paper. A broadband piezoelectric (PZT) sensor-network based laboratory experiments and finite element method based numerical simulations of low-velocity steel-ball drop impacts at different locations on a CSS have been carried out. It is observed that the arrival-time of the impact-induced elastic wave signals increases with the increase in source-to-sensor distance. Further, the influence of impactor drop-height variations is studied by conducting a series of numerical simulations in ABAQUS. An arrival-time difference calculation based impact source localisation strategy is proposed to locate the impact regions in the CSS. The proposed monitoring strategy uses the registered impact signals (time-domain) at the PZTs to predict impact locations in real-time. Eventually, a study on the estimation of localisation error has been carried out to check the effectiveness of the proposed SHM strategy.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	0263-8223
Date of Acceptance:	19 April 2022
Last Modified:	06 Jan 2024 02:22
URI:	https://orca.cardiff.ac.uk/id/eprint/153896

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