Analysis of historical wall dampness using electrical tomography measuring system

Article type: Research Article

Authors: Rymarczyk, Tomasz^{a; b;} | Tchórzewski, Paweł^a

Affiliations: [a] Research and Development Center Netrix S.A., Lublin, Poland | [b] University of Economics and Innovation in Lublin, Lublin, Poland

Correspondence: [*] Corresponding author: Tomasz Rymarczyk. Research & Development, Netrix S.A., ul. Wojciechowska 31, 20-704 Lublin, Poland. E-mail: tomasz.rymarczyk@netrix.com.pl

Abstract: The paper presents a solution for testing the humidity of a brick wall using electrical tomography. Different prototypes of measurement systems based on the device with hybrid tomography were prepared. Prepared constructions contain 16 electrodes in a brick wall on one side and two-sided. Electrical tomography, which is based on the measurement of potential difference, can be used to check historical buildings. The way in which we can determine the condition of a wall of moisture depends on the fact that each material has a unique conductivity. The use of modern tomographic techniques in combination with topological algorithms will allow non-destructive and non-destructive very accurate spatial assessment of the humidity level. The proposed application uses the Total Variation, Gauss–Newton and level set method to solve the inverse problem in electrical tomography.

Keywords: Electrical tomography, inverse problem, level set method, hybrid methods

DOI: 10.3233/JAE-171151

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 4, pp. 1257-1265, 2019