Multi-frequency Electrical Impedance Tomography System for Non-Destructive Crack Detection
نویسندگان
چکیده
Electrical Impedance Tomography (EIT) is an imaging modality which reconstructs the impedance distribution of a closed domain using the measured boundary voltage data when injecting current [1-6]. It has been applied to numerous industrial applications such as: process tomography [7], nondestructive testing [8], imaging biological cells [9], medical imaging equipment [4] etc. Among them, non-destructive testing (NDT) of a structures is one of the important issues to evaluate their safety level [10]. Specially, crack and delamination of the structure such as a pipe, concrete and system component must be detected and monitored in the nuclear power plant and high level radioactive waste repository site. Multi-frequency conductivity and permittivity information can provide the improved crack identification in the complex structure including many cracks and rebar. In this study, we introduced some simulation and experiment results for a phantom to check its feasibility of non-destructive crack detection.
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