Development of an MFL Coil Sensor for Testing Pipes in Extreme Temperature Conditions
Nagu Sathappan1, Mohammad Osman Tokhi1, Liam Penaluna2
1School of Engineering, London South Bank University, London SE1 0AA, UK.
Abstract:
This paper aims to design a coil sensor for corrosion monitoring of industrial pipes that could detect variations in thickness using the MFL (Magnetic Flux Leakage) technique. An MFL coil sensor is designed and tested with pipe sample thicknesses of 2, 4, 6, and 8 mm based on the magnetic field effect of ferrite cores. Moreover, a measurement setup for analysing pipe samples up to a temperature of 200° Celsius is suggested. Experimental results reveal that the MFL coil sensor can fulfil the requirements for MFL testing of pipes in high temperature conditions, and that the precision of MFL monitoring of pipes to detect corrosion at high temperatures can be improved significantly.
Related Concept Videos
Thermal expansion and Thermal stress: Problem Solving
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
Pipe Flowrate Measurement
The orifice meter is a simple,...
Pipe Flowrate Measurement: Problem Solving
Bending of Material: Problem Solving
Multiple Pipe Systems
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
Single Pipe Systems
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...


