Abstract

A defect sensing method based on electrical impedance spectroscopy is proposed to image cracks and reinforcing bars in concrete structures. The method utilizes the frequency-dependent behavior of thin insulating cracks: low-frequency electrical currents are blocked by insulating cracks, whereas high-frequency currents can pass through thin cracks to probe the conducting bars. From various frequency-dependent electrical impedance tomography (EIT) images, we can show its advantage in terms of detecting both thin cracks with their thickness and bars. We perform numerical simulations and phantom experiments to support the feasibility of the proposed method.

Details

Title
Electrical Impedance Spectroscopy-Based Defect Sensing Technique in Estimating Cracks
Author
Zhang, Tingting; Zhou, Liangdong; Ammari, Habib; Seo, Jin Keun
Pages
10909-10922
Publication year
2015
Publication date
2015
Publisher
MDPI AG
e-ISSN
14248220
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
1695320726
Copyright
Copyright MDPI AG 2015