Development of crack monitoring system for concrete structures using magnetic field variation

Master thesis (2023)

Authors

K.P. Joshi Civil Engineering & Geosciences

Contributors

M. Fotouhi Materials and Environment - CEG (supervisor 1)
Sandra Nunes Concrete Structures - CEG (supervisor 2)
Oguzhan Copuroglu Materials and Environment - CEG (supervisor 2)
Olivier Baas (supervisor 1)
Faculty
Civil Engineering & Geosciences
Copyright: © 2023 Kanhai Joshi
More Info
expand_more

Published Date

28-06-2023

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Civil Engineering & Geosciences

Abstract

Despite stringent safety standards, concrete is prone to various forms of deterioration over time, and the occurrence of cracks is not uncommon. Therefore, the detection and monitoring of deformations in concrete are essential to mitigate the risks associated with structural failure. Implementing a real-time Structural Health Monitoring (SHM) system can play a crucial role in identifying early signs of damage, such as corrosion in reinforcement, thus enhancing the efficiency of maintenance and repair interventions and ultimately prolonging the lifespan of the structure. The data collected through SHM techniques also contribute to the validation of design practices employed in the structure and further advancements in the field. In a broader context, the integration of SHM supports the development of sustainable infrastructure, ensuring the longevity and safety of concrete structures.
Along with visual inspection, SHM techniques are deployed to conduct a thorough analysis of structural behaviour. However, many traditional methods involve tedious installation processes. Several techniques utilize a wide spectrum of radiations, such as ultraviolet pulses, infrared radiations, and X-rays, and rely on sophisticated equipment that demands trained personnel for data analysis. In
this study, a novel approach is proposed for SHM by utilizing magnetic fields for
crack monitoring. Currently, this technique is used to monitor cracks in steel structures.
The aim of this work is to explore and adapt this idea to integrate the sensor system into the field of structural health monitoring for concrete structures. The scientific contributions made in this study include the investigation of the effects of crack propagation on the magnetic field, the modeling of the behavior using analytical and numerical methods, the construction of a prototype, the validation of the structural health monitoring technique, and the demonstration of the feasibility of this method.