A measurement system based on magnetic sensors for nondestructive testing

A measurement system based on magnetic sensors for nondestructive testing

The paper deals with a measurement system based on a low-cost eddy current probe for nondestructive testing (NDT) on conducting materials aimed at reconstructing the shape and position of thin cracks. The magnetic probe is characterized, highlighting good repeatability, linearity, and overall accura...

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Veröffentlicht in:IEEE transactions on instrumentation and measurement 2000-04, Vol.49 (2), p.455-459
Hauptverfasser: Bernieri, A., Betta, G., Rubinacci, G., Villone, F.
Format: Artikel
Sprache:eng
Schlagworte:
Conducting materials
Conduction
Cracks
Current measurement
Eddy currents
Flaw detection
Instrumentation
Linearity
Magnetic noise
Magnetic probes
Magnetic sensors
Nondestructive testing
Position measurement
Probes
Repeatability
Reproducibility
Shape measurement
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Beschreibung
Zusammenfassung:The paper deals with a measurement system based on a low-cost eddy current probe for nondestructive testing (NDT) 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 most appropriate for NDT applications. A numerical method is then illustrated; it proves to be able to reconstruct cracks starting from noisy measurement data.
ISSN:0018-9456
1557-9662
DOI:10.1109/19.843095