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This paper describes a nondestructive testing equipment designed with the purpose of being low-cost and able to work in a stand-alone way. The main feature is related to the integration of an eddy-current probe using a giant magnetoresistance (GMR) sensor with a computer mouse to be used as a positioning system. The system was constructed and tested. The results that were obtained allow the graphical...
Evaluation of cracks using eddy currents (ECT) is one of the most used methods for non destructive testing (NDT). However, this technique still needs to be improved. One of the problems is related to the fact that eddy currents tests are so sensitive that a reproducible background noise signal is always present mitigating the informative data. This paper presents new developments in the area of signal...
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