Development of the Identification Method of the Current from Sacrificial Anodes of Large Marine Steel Structures using Bayesian Estimation

Abstract

A new method for estimating the current of sacrificial anodes and the surface potential of the structure from the potential measurement was developed. The observation equation is formed by finite element method considering the geometry of the sea structure. Since this estimation problem is ill conditioned, the Bayesian Estimation approach is employed to overcome the problem. In order to demonstrate the effectiveness and efficiency of the present method, the verification experiment was performed at the real steel structures. This method enables us to estimate the corrosion protection state of the marine steel structure with easy inspection.