Author(s)

S. Aoki, K. Amaya & K. Gouka

Abstract

Optimal cathodic protection of ship S. Aoki, K. Amaya, K. Gouka Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152, Japan ABSTRACT A boundary element method for performing optimal cathodic protection of a ship is proposed in this paper. The method consists of three parts; (1) a method for estimating the potential distribution on the hull from the potential data at fixed several sensors, (2) a method for determining the optimal currents to be impressed from each electrode, and (3) a method for detecting the location of a paint defect from the potential change at the sensors. An example problem is solved by a three dimensional boundary element method to demonstrate the usefulness of the proposed method. INTRODUCTION To prevent corrosion of a ship, the hull is painted and cathodic protection is performed by impressing currents from several electrodes. Some sensors for monitoring potentials are located at several points

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