Embedded PZT sensors for monitoring formation and crack opening in concrete structures

Kocherla, A. and Duddi, M. and Subramaniam, K.V.L. (2021) Embedded PZT sensors for monitoring formation and crack opening in concrete structures. Measurement, 182 (109698). ISSN 02632241

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Abstract

An application for sensing the stress-induced localization of damage in the form of a discrete crack in a concrete substrate is developed using embedded PZT patches. Stress-wave measurements are obtained through the stages of damage localization leading to crack formation, propagation, and opening of the discrete, localized crack in the concrete. A self-compensating attenuation factor is proposed to quantify the changes in stress waves produced by the material discontinuity introduced by cracking in concrete. The attenuation factor measurements provide a sensitive indication of displacement discontinuity introduced by a crack in the stress wave path. Displacement discontinuity in concrete associated with a crack opening smaller than 10 μm in the loaded state is detected in the attenuation factor measurements even after the removal of stress. The embedded PZT sensors can continuously monitor concrete structures for indications of crack formation before visual indication. © 2021 Elsevier Ltd

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IITH Creators:	IITH Creators ORCiD Subramaniam, Kolluru V.L. https://orcid.org/0000-0002-5995-0911
Item Type:	Article
Uncontrolled Keywords:	Array of sensors, Attenuation, Crack opening, Embedded sensor, PZT, Stress wave
Subjects:	Civil Engineering
Divisions:	Department of Civil Engineering
Depositing User:	Mrs Haseena VKKM
Date Deposited:	16 Mar 2022 06:41
Last Modified:	16 Mar 2022 06:41
URI:	http://raiithold.iith.ac.in/id/eprint/9195
Publisher URL:	https://www.sciencedirect.com/science/article/pii/...
OA policy:	https://v2.sherpa.ac.uk/id/publication/16751
Related URLs:	Author

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