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Low-cost Stand-alone System for Eddy Current Testing of Metallic non-Ferromagnetic Plates

Rocha, T. ; Ribeiro, A. L. ; Ramos, H.

Low-cost Stand-alone System for Eddy Current Testing of Metallic non-Ferromagnetic Plates, Proc IEEE Instrumentation and Measurement Technology Conf., Shangai, China, Vol. 00, pp. 225 - 230, May, 2011.

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Abstract
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 representation of the acquired signals as a function of position, which is considered an improvement in relation to the systems that only represent the defect signatures.