Numerical Algorithms and Measurement Systems in Practical Implementation of Electrical Impedance Tomography

This paper presents a nondestructive method of brick wall dampness testing in real building structures and a new method of testing flood embankment dampness. We used a setup made of specially built laboratory models to determine the moisture level of test brick walls and flood embankments. The topological method and the gradient technique were used with the optimization approach. The finite element method was used to solve the forward problem. The proposed algorithm was initialized by using one step methods and topological sensitivity analysis. We constructed the forward model and we solved the inverse problem in order to visualize moisture inside objects. Practical examples of using the Electrical Impedance Tomography are also presented.

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