Title :
A measurement system based on magnetic sensors for nondestructive testing
Author :
Bernieri, Andrea ; Betta, Giovanni ; Rubinacci, Guglielmo ; Villone, Fabio
Author_Institution :
Dept. of Autom. Electromagn., Inf. Eng. & Ind. Math., Cassino Univ., Italy
Abstract :
The paper deals with a measurement system based on a low-cost eddy current probe for nondestructive testing on conducting materials aimed at reconstructing the shape and position of thin cracks. The magnetic probe is characterized, highlighting good repeatability, linearity, and overall accuracy. A number of different measurement approaches are investigated, in order to choose the more appropriate for NDT applications. A numerical method was then illustrated; it proves to be able to reconstruct cracks also starting from noisy measurement data
Keywords :
coils; crack detection; eddy current testing; magnetic sensors; NDT measurement system; accuracy; coils; conducting materials; crack reconstruction; fluxset sensor; linearity; low-cost eddy current probe; magnetic sensors; noisy measurement data; repeatability; thin cracks; Conducting materials; Current measurement; Eddy currents; Linearity; Magnetic noise; Magnetic sensors; Nondestructive testing; Position measurement; Probes; Shape measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE
Conference_Location :
Venice
Print_ISBN :
0-7803-5276-9
DOI :
10.1109/IMTC.1999.776773
