UNIFORM EDDY CURRENT PROBE IMPLEMENTATION USING PLANAR EXCITATION COIL AND GMR SENSOR ARRAY |
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| Octavian Postolache, Artur Lopes Ribeiro,Helena Ramos |
- Abstract:
- Defect detection in conductive plates represents an important issue. This work presents designed and implemented uniform eddy current probe architecture (UECP) that includes a planar excitation coil and a GMR magnetometer sensor array as part of a non-destructive testing (NDT) system developed using a virtual instrument system technology. The usage of GMR sensors provides frequency independent sensitivity to the UECP, assuring speed, depth, and higher resolution in eddy-current testing, while the usage of a set of GMR sensors allows rapid scanning of an area for defects in a single pass.
A practical approach concerning the UECP design, implementation and experimental results obtained on cracks detection machined in aluminum plates for a single or multiple GMR sensor usage as main parts of UECP are presented. Experimental results regarding the usage of the novel eddy current probe to detect induced flaws in aluminum plates are included in the paper. - Keywords:
- non-destructive testing, uniform eddy current probe, giant magnetoresistance sensors array
- Download:
- IMEKO-TC4-2011-072.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 Symposium 2011
- Title:
XVIIIth IMEKO TC4 International Symposium on Measurement of Electrical Quantities (part of Metrologia2011, together with IX International Congress on Electrical Metrology - IX SEMETRO)
- Place:
- Natal, BRAZIL
- Time:
- 27 September 2011 - 30 September 2011