Carbon nanotubes doped concrete-based sensor for strain measurements

Shipra Prakash; Suresh Bhalla

doi:10.1117/12.2627121

18 April 2022 Carbon nanotubes doped concrete-based sensor for strain measurements

Shipra Prakash, Suresh Bhalla

Proceedings Volume 12046, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2022; 120461F (2022) https://doi.org/10.1117/12.2627121
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Construction, design, and maintenance of civil structures involves huge money and manpower. To extract the maximum potential use of such structures they need continuous monitoring, for checking any deformity in early stages. Many studies incorporating conventional sensors like electric strain gauge (ESG), optical fibers wire, piezo ceramic materials i.e., Lead zirconate titanate (PZT) have been proven successful in detecting damage of structures but accompanied with many challenges including environmental and operational challenges, compatibility, and durability issues. This paper covers the development of a concrete-based sensors in size 50×50×50 mm suitable for embedding in concrete structures by doping four different dosages of multi-walled carbon nanotubes (MWCNTs) in concrete to develop concrete-based sensors ensure compatibility with surrounding concrete. They were evaluated under different loading conditions. Sensors possess enhanced sensitivity, high durability, and compatible life as the life of structure. They were found successful in detecting static strain measurements obtained in form of resistance changes. A frequency response function was also obtained using LCR meter in the range of frequency 100-500 kHz.

Conference Presentation

Citation Download Citation

Shipra Prakash and Suresh Bhalla "Carbon nanotubes doped concrete-based sensor for strain measurements", Proc. SPIE 12046, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2022, 120461F (18 April 2022); https://doi.org/10.1117/12.2627121

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