IEEE Transactions on Magnetics最新文献

{"title":"Research on the Magnetic Leakage Field of Internal Defects in Steel Wire Ropes Based on the Magnetic Dipole Model","authors":"Xu Zhao;Zina Zhu","doi":"10.1109/TMAG.2024.3455929","DOIUrl":"10.1109/TMAG.2024.3455929","url":null,"abstract":"The steel wire ropes are often used in a harsh environment and are susceptible to damage, with varying shapes and sizes of defects that may occur within it. This leads to potential safety risks during usage; thus, the detection and analysis of internal defects are especially necessary. Traditional magnetic dipole theory, a widely employed approach in non-destructive testing, often encounters limitations in accurately calculating the internal defects. This article introduces an advanced method in the magnetic dipole theory by incorporating equivalent magnetic charge calculations, thus developing a magnetic flux leakage (MFL) model specifically for internal defects in wire ropes. This enhanced model facilitates the analysis of MFL intensity caused by the defects of diverse geometries, including rectangular, trapezoidal, and triangular shapes. The theoretical results have been validated through simulations and experiments, maintaining a simulation error of approximately 3% and an experimental error under 10%. This validation emphasizes the effectiveness of the proposed theory in detecting internal defects in wire ropes, potentially enhancing safety measures during their usage.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"60 11","pages":"1-13"},"PeriodicalIF":2.1,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient Calculation of the Self-Magnetic Field, Self-Force, and Self-Inductance for Electromagnetic Coils","authors":"Siena Hurwitz;Matt Landreman;Thomas M. Antonsen","doi":"10.1109/TMAG.2024.3455946","DOIUrl":"10.1109/TMAG.2024.3455946","url":null,"abstract":"The design of electromagnetic coils may require evaluation of several quantities that are challenging to compute numerically. These quantities include Lorentz forces, which may be a limiting factor due to stresses; the internal magnetic field, which is relevant for determining stress as well as a superconducting coil’s proximity to its quench limit; and the inductance, which determines stored magnetic energy and dynamics. When computing the effect on one coil due to the current in another, these quantities can often be approximated quickly by treating the coils as infinitesimally thin. When computing the effect on a coil due to its own current (e.g., self-force or self-inductance), evaluation is difficult due to the presence of a singularity; coils cannot be treated as infinitesimally thin as each quantity diverges at zero conductor width. Here, we present novel and well-behaved methods for evaluating these quantities using non-singular integral formulas of reduced dimensions. These formulas are determined rigorously by dividing the domain of integration of the magnetic vector potential into two regions, exploiting appropriate approximations in each region and expanding in a high aspect ratio. Our formulas show good agreement to full finite-thickness calculations even at low aspect ratio, both analytically for a torus and numerically for a non-planar coil of a stellarator fusion device, the helically symmetric experiment (HSX). Because the integrands of these formulas develop fine structure as the minor radius becomes infinitely thin, we also develop a method of evaluating the self-force and self-inductance with even greater efficiency by integrating this sharp feature analytically. We demonstrate with this method that the self-force can be accurately computed for the HSX coil with as few as 12 grid points. Additionally, we demonstrate that this method offers a significant speed-up compared to industry standard finite-element analysis (FEA) software: for the HSX coil, it is possible to compute the magnetic field in a fraction of a millisecond per point with this method, while FEAs require an order of an hour to evaluate across an entire mesh to a similar accuracy.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"60 11","pages":"1-14"},"PeriodicalIF":2.1,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient Electric Field Evaluation of a Point Source near the Infant Torso","authors":"A. A. Varvari, D. I. Karatzidis, T. T. Zygiridis, C. S. Antonopoulos, N. V. Kantartzis","doi":"10.1109/tmag.2024.3453988","DOIUrl":"https://doi.org/10.1109/tmag.2024.3453988","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"1 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electric Field Manipulation of the Dzyaloshinskii–Moriya Interaction in Hybrid Multiferroic Structures","authors":"O. G. Udalov;R. V. Gorev;N. S. Gusev;A. V. Sadovnikov;M. V. Sapozhnikov","doi":"10.1109/TMAG.2024.3453591","DOIUrl":"10.1109/TMAG.2024.3453591","url":null,"abstract":"Hybrid multiferroic films are fabricated by depositing Pt/Co/Pt multilayers onto [001] and [110] cuts of PMN-PT crystal. The dependence of the interfacial Dzyaloshinskii–Moriya interaction (iDMI) on applied electric field is experimentally investigated in the system by the Brillouin light scattering (BLS) method. A strong variation (from −0.2 to 0.8 mJ/m2) of the iDMI constant is observed when the electric field is applied. In the case of [001] cut, the observed changes in the iDMI have an isotropic character, while in the case of [110] cut, they are anisotropic, which corresponds to the symmetry of the PMN-PT deformations. The change in the iDMI is accompanied by the formation of various unusual domain structures and skyrmion lattices. External control of the DMI with an electric field opens the way to manipulate topological magnetic solitons (such as skyrmions), which are promising objects for information processing and storage.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"60 11","pages":"1-8"},"PeriodicalIF":2.1,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat-Assisted Magnetic Recording for 3 TB/platter","authors":"Bogdan Valcu, Tobias Maletzky, Moris Dovek, Xiao Ming Liu, Anthony Lai","doi":"10.1109/tmag.2024.3453177","DOIUrl":"https://doi.org/10.1109/tmag.2024.3453177","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"25 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Head Smear Reduction in Head-Disk Interface of HAMR using External AC Electric Field","authors":"Hiroshi Tani, Yuto Miyuki, Shohei Kawada, Renguo Lu, Shinji Koganezawa","doi":"10.1109/tmag.2024.3452784","DOIUrl":"https://doi.org/10.1109/tmag.2024.3452784","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"403 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying Side Reading in Heat-Assisted Magnetic Recording","authors":"Xuan Zheng, Walter R. Eppler, Jay Loven","doi":"10.1109/tmag.2024.3453766","DOIUrl":"https://doi.org/10.1109/tmag.2024.3453766","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"21 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Circuit-Based Formulation for Soft Magnetic Materials Using the Jiles–Atherton Model","authors":"Krishna Kanakgiri;Dhruv Ishan Bhardwaj;Boggavarapu Sai Ram;Shrikrishna V. Kulkarni","doi":"10.1109/TMAG.2024.3452593","DOIUrl":"10.1109/TMAG.2024.3452593","url":null,"abstract":"It is crucial to accurately estimate the performance of magnetic components, such as inductors and transformers, during their pre-design stage. The magnetic characteristics of soft magnetic materials are significantly affected by their excitation. For example, a time-varying excitation results in dynamic losses (eddy and excess loss components), and an excitation with harmonics leads to extra losses. To accurately model these components with a generalized approach, it is important to consider a physics-based hysteresis formulation in electromagnetic analysis. Some circuit and electromagnetic field simulators can model hysteresis characteristics using formulations, such as the Jiles-Atherton (JA) hysteresis model. However, these simulators require the JA model parameters as input, and it is a challenge for simulation engineers to calculate the JA model parameters. In this work, an inductor circuit element is proposed using the JA model to define the magnetic characteristics of soft magnetic materials in an open-source circuit simulator. Providing hysteresis (or B–H loop) data as input to the circuit element in the proposed approach obviates the need of calculating the JA model parameters for circuit simulation. The B–H data are used to determine the JA model parameters, which are automatically transferred to the inductor model in the circuit simulation. The approach can be used to model the topological-based equivalent circuit of magnetic components, such as inductors and transformers.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"60 10","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel Multiple Magnetic Source Axial Flux Modulation Machines for Aviation Propulsion Applications","authors":"Pengcheng Sun, Shaofeng Jia, Wenlong Liu, Zhidong Yuan, Deliang Liang","doi":"10.1109/tmag.2024.3452097","DOIUrl":"https://doi.org/10.1109/tmag.2024.3452097","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"44 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical Field Calculation and Analysis of a High Speed PMSM","authors":"Jun Che, Fei Zhao, Bin Chen, Mengzhu Cao, Jiwei Cao, Qasim Ali, Shahid Atiq","doi":"10.1109/tmag.2024.3452151","DOIUrl":"https://doi.org/10.1109/tmag.2024.3452151","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"5 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}