Fig. 1: The methodology of electrochemical tomography (ECT) and the importance of external polarization.
From: Electrochemical tomography as a nondestructive technique to study localized corrosion of metals
a Overview of ECT. b The geometry of the 2D axisymmetric forward model, including model parameters Wan and zan describing the size and location of the anode and the position of the reference electrodes (RE) and counter electrodes (CE) at the surface of the concrete. The marginal probability density function (pdf) estimates of the MCMC results for simulations with and without external polarization of −0.2 and +0.08 mA and a spacing of Δz = 5 cm between the RE, for model parameters c Wan, d zan, e log10(i0,Fe), f \({\rm{log}}10({i}_{0,{{\rm{O}}}_{2}})\). The vertical dashed lines represent the means of the corresponding MCMC results, the black lines the known (input) model parameters.
