ECT Characterization of a Linear Defect From Multiple Angle Measurements |
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| Dário Pasadas, Tiago Rocha, Artur Ribeiro, Helena Ramos |
- Abstract:
- This paper presents the characterization of a linear defect using the eddy current test (ECT) method with spatially uniform sinusoidal excitation. The eddy current probe includes a planar coil and a giant magneto-resistor sensor (GMR). To increase accuracy on the geometrical characterization of defects, measurements are performed at several rotation angles. The experimental magnetic field data obtained by scanning a given area is used to obtain the spatial eddy current distribution. For each scanning angle the eddy current map is obtained using an algorithm based on an image reconstruction technique solving the Biot-Savart inverse problem.
- Keywords:
- eddy current testing, GMR, Inversion problem, defect
- Download:
- IMEKO-TC4-2013-056.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 Symposium 2013
- Title:
- 19th IMEKO TC4 Symposium Measurements of Electrical Quantities (together with 17th TC4 IWADC Workshop on ADC and DAC Modelling and Testing)
- Place:
- Barcelona, SPAIN
- Time:
- 18 July 2013 - 19 July 2013