Submitted by Professor Stefan Kaczmarczyk

Title: The influence of probe fill factor during boiler tube inspection using electro-magnetic non-destructive testing

Speaker: Dr Jonhson Angelo, Federal University of ABC, Brazil/ Visiting Research Fellow at the University of Northampton

Date: Monday 23rd November 2015
Time: 13:00 – 14:00
Venue: NW101, Avenue Campus

The aim of this talk is to show the importance and influence of the probe fill factor during inspection of boiler tubes when using electromagnetic non-destructive testing techniques. This is demonstrated by the results of finite element (FE) modelling and simulation test.

A probe fill factor greater than 90% may result in the probe becoming lodged inside the tube due to its bends, causing damage to the probe and resulting in the need to cut the tube in order to remove the probe. This will cause loss of time and will increase the repair costs of the tube. Fill factors smaller than 80% may cause distortion of the magnetic field which may lead to the misinterpretation of defects on the surface of the tube not fully covered by the magnetic field.

About the speaker:

Dr Jonhson Angelo is Associate Professor at the Federal University of ABC, Sao Paulo, Brazil, teaching courses covering the subjects of Failure Analysis and Damage Mechanism. He is an Industrial Chemist and holds a Masters and a PhD degree in Materials Science. Dr Angelo has over 20 years’ experience in Failure Analysis and Damage Mechanism and heavy industry equipment inspection using a Remote Field Eddy Current, Internal Rotatory Inspection System for tubes inspection and B-Scan Ultrasound techniques for tube and atmospheric tanks inspection.