Results 21 to 30 of about 2,222 (69)
Analysis of weak magnetic nondestructive testing for cracks in the top beam of hydraulic support
Gong-kuang zidonghua, 2022 In view of the complicated operation of the current crack detection method of hydraulic support, a weak magnetic nondestructive detection method for cracks in the top beam of hydraulic support based on geomagnetic field excitation is proposed.
LIU Ning, XIN Song, HE Min, CHEN Qiuyan
doaj +1 more source
AIP Advances, 2020 This paper presents the magnetic field characteristics of a synchronous generator with a salient pole structure using a simple magnetic equivalent circuit (MEC) method. This method aims to reduce the analysis time considering nonlinearity.
Do-Yun Kwon +4 more
doaj +1 more source
IEEE Access, 2021 Interior permanent magnet synchronous motors have the advantage of being applicable to various fields owing to their high torque density and wide operating range but have the disadvantage of large electromagnetic vibrations.
Seung-Hyeon Lee +3 more
doaj +1 more source
The Estimation of Power Losses in Composite Cores Excited by Harmonic Flux Density Waveforms
EnergiesThis paper presents a study of the empirical approach to the estimation of power losses in composite cores excited by harmonic flux density waveforms. Nowadays, magnetic cores operating in power electronic devices are excited by distorted (e.g., harmonic)
Mariusz Najgebauer +3 more
doaj +1 more source
Metals, 2021 This paper describes the development of a movable manual electromagnet with an adjustable flux density to improve the inner surface smoothness of a cone pipe using a magnetic abrasive finishing process.
Jeong Su Kim +5 more
doaj +1 more source
International Journal of Distributed Sensor Networks, 2013 This paper investigates experimentally the feasibility of estimating the stress in the prestressing tendons of prestressed concrete bridges using the magnetic field induced by an electromagnet and the Villari effect in which the magnetic susceptibility ...
Changbin Joh, Jung Woo Lee, Imjong Kwahk
doaj +1 more source
Influence of Permanent Magnetic Properties on Laser-Assisted Heating Magnetization for Magnetic MEMS
IEEE Access, 2023 When magnetic microelectromechanical systems (MEMS) devices utilize thin- or thick-film permanent magnets, the uniform magnetization of these magnets, owing to their flat-shape, generate a strong antimagnetic field and weak surface magnetic flux density.
Keita Nagai +2 more
doaj +1 more source
An Improved Seeding Algorithm of Magnetic Flux Lines Based on Data in 3D Space
Data Science Journal, 2015 This paper will propose an approach to increase the accuracy and efficiency of seeding algorithms of magnetic flux lines in magnetic field visualization. To obtain accurate and reliable visualization results, the density of the magnetic flux lines should
Jia Zhong, Xiaoyan Hu, Ziming Zou
doaj +1 more source
High Performance Planar Magnetics Based on an Unbalanced-Flux Approach
IEEE Open Journal of Power Electronics, 2023 This paper presents a new design concept to increase the efficiency and the power density of planar magnetics. In contrast to the existing magnetics, which are built using the balanced magnetic flux density design, the proposed design concept generates ...
Sobhi Barg +2 more
doaj +1 more source
Journal of Mazandaran University of Medical Sciences, 2019 Background and purpose: Considerable increase on the use of electronic devices increased the rate of public occupational exposure to extremely low frequency electromagnetic fields.
Mohammad Ali Zazouli +4 more
doaj