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Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)
Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto
Article type: Research Article
Authors: Ramos, Helena G.* | Baskaran, Prashanth | Ribeiro, Artur L.
Affiliations: Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, Lisboa, Portugal
Correspondence: [*] Corresponding author: Helena G. Ramos, Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal. E-mail:hgramos@ist.utl.pt
Abstract: The objective of this paper is a proof of concept on the possibility to measure the same magnetic fields, by the principle of dilation invariance. According to this principle, dilation of the dimensional and electrical parameters of a probe and a plate with crack reproduces the same magnetic field (measured at every dilated point) which was produced by a probe and a plate with crack, without dilation. This implies that, in order to evaluate the performance of eddy current method in a specific industrial case study, one can carry out tests in a scaled model in the laboratory and then, extend the conclusions to the real situation by using dilation invariance principle. The experimental and simulation results show a good agreement of crack detection by using two eddy current probes of which one is the dilated version of the other.
Keywords: ECT, eddy current testing, nondestructive evaluation, dilation invariance principle
DOI: 10.3233/JAE-162067
Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 363-369, 2016
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