A Unified Electromagnetic Inverse Problem Algorithm for the Identification of the Magnetic Material Characteristics of Electromagnetic Devices Including Uncertainty Analysis: A Review and Application

Abdallh, Ahmed Mohamed Abouelyazied; Dupré, Luc

doi:10.1109/tmag.2014.2332978

Cited by 6 publications

(1 citation statement)

References 30 publications

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“…Finally, there are DC-susceptometers, generally used for the microscopic characterization of weakly magnetic materials [12]. Recent trends in the state of the art show the increasing application of inverse-problem techniques to solve a broad variety of problems [13]- [18], including the characterization of magnetic materials employed in electromagnetic devices such as electrical machines [19], magneto-rheological elastomers [20] or circuit breakers [21]. Although there are a broad variety of solutions, the characterization of weakly magnetic materials by using the inverse-problem approach has not been previously considered.…”

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A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials

Arpaïa

Buzio

Parrella

et al. 2021

IEEE Trans. Instrum. Meas.

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In 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 %. Index Terms-Magnetic measurements, inverse-problem approach, relative permeability, weak magnetic materials, NMR teslameter, stainless steel, vibrating sample magnetometer, tungsten I. INTRODUCTION I N alloys such as austenitic stainless steels, brass and bronze, weak traces of martensite are present [1]. Among pure metals, aluminium is the reference for these kinds of applications, though its mechanical properties are often inadequate for specific tasks or applications. Titanium is a valid alternative, but its high cost makes it only usable for specific applications (e.g., vacuum chambers). Finally, as an alternative to metals, ceramics have lower susceptibility, but they are often too brittle to be employed instead of metals. A good compromise among all these requirements is stainless steel. In particular, austenitic stainless steels are broadly used in harsh environments, such as nuclear reactors, naval vessels, and chemical plants, where the combination of good corrosion resistance with suitable mechanical properties is crucial.

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confidence: 99%

A Static-Sample Magnetometer for Characterizing Weak Magnetic Materials

Arpaïa

Buzio

Parrella

et al. 2021

IEEE Trans. Instrum. Meas.

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Research on the Development of New Technologies Based on New Magnetic Material Technology Entrepreneurship

Wei

Zhang

2020

IOP Conf. Ser.: Earth Environ. Sci.

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New materials, especially those related to magnetic materials, face the contradiction between the company’s own scale and central tasks. It is necessary to formulate reasonable product research and development measures and overall corporate strategy to ensure that enterprises can smoothly pass this high risk and high. The period of growth. Based on the main business of magnetic materials companies and the related characteristics of magnetic materials, this paper analyses the special characteristics of the new magnetic materials enterprises in the entrepreneurial stage, and at the same time formulates the overall strategy and functional strategies of the entrepreneurial stage according to the development of the enterprise to help the new innovative magnetic materials. The company smoothly passed the stage of entrepreneurial development.

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