[9A1] Development of an underwater and high-temperature sensor for permanently installed corrosion monitoring system
Nagu Sathappan1, M OsmanTokhi2 and Giorgos Asfis2
1London South Bank University, UK
2TWI, UK
Corrosion monitoring of pipelines and pipework under extreme conditions (underwater and high temperature) is an important task as corrosion is one of the leading causes of failure of these parts of industrial plant. The Magnetic Flux leakage technique has the potential to be adapted to these extreme conditions. Initial design of a magnetic circuit for measuring pipe wall thickness is examined by a three dimensional simulation FEM model using COMSOL software. The MFL signal (Bx, By, Bz component) of simulated flaws, which have the same length, same width, and different depths, have been studied, together with an array of sensors. This paper discusses the results obtained through FEM simulation and compares these with experiment and this confirms the potential of the system for three-dimensional enhanced MFL inspection.
