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EnglishIn this paper, a static-sample magnetometer is presented to measure the relative permeability of weakly magnetic materials. The method consists of scanning the magnetic field inside a dipole magnet by using an NMR teslameter to measure the perturbation of a test specimen on the externally applied field. Then, an inverse problem is used to compute the specimen's relative permeability. As a case study, the measurement of three different materials with different shapes and dimensions is carried out. The method was validated by measuring the same material by a vibrating sample magnetometry as proposed by the standard ASTM A342/A342M-14. The Monte Carlo evaluated expanded measurement uncertainty of the relative permeability is about 10 −4 for all the cases, with a level of confidence of 95 %.
A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials / Arpaia, Pasquale; Buzio, Marco; Parrella, Alessandro; Pentella, Mariano; Ramos, Pedro M.. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - ELETTRONICO. - (2020), pp. 1-1.
| Titolo: | A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials |
| Autori: | |
| Data di pubblicazione: | 2020 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/TIM.2020.3041823 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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