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Author(s): Edgard M. Silva
Alysson M. R. Paula
Josinaldo P. Leite
João P. Leite
Lucia S. S. Andrade
Victor Hugo C. de Albuquerque
João Manuel R. S. Tavares
Title: Detection of the magnetic easy direction in steels using induced magnetic fields
Issue Date: 2016-12
Abstract: Conventional manufacturing processes cause plastic deformation that leads to magneticanisotropy in processed materials. A deeper understanding of materials characterization underrotational magnetization enables engineers to optimize the overall volume, mass, and performanceof devices such as electrical machines in industry. Therefore, it is important to find the magneticeasy direction of the magnetic domains in a simple and straightforward manner. The Magneticeasy direction can be obtained through destructive tests such as the Epstein frame method andthe Single Sheet Tester by taking measurements in regions of irreversible magnetization usuallycalled domains. In the present work, samples of rolled SAE 1045 steel (formed by perlite and ferritemicrostructures) were submitted to induced magnetic fields in the reversibility region of magneticdomains to detect the magnetic easy direction. The magnetic fields were applied to circular sampleswith different thicknesses and angles varying from 0to 360 with steps of 45. A square sample witha fixed thickness was also tested. The results showed that the proposed non-destructive approach ispromising to evaluate the magnetic anisotropy in steels independently of the geometry of the sample.The region studied presented low induction losses and was affected by magnetic anisotropy, whichdid not occur in other works that only took into account regions of high induction losses.
Subject: Ciências Tecnológicas, Ciências da engenharia e tecnologias
Technological sciences, Engineering and technology
Scientific areas: Ciências da engenharia e tecnologias
Engineering and technology
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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