Results 181 to 190 of about 13,377 (241)

Design and test validation of a novel permanent magnet eddy current brake

International Journal of Applied Electromagnetics and Mechanics, 2022
Aiming at slippage and belt breakage of large mechanical conveyor belts, a new type of water-cooled permanent magnet brake (WPMB) is proposed. In order to determine the braking performance of WPMB, a multi-physics coupling model and analysis method of magneto-thermal-structure are built.
Ye, Lezhi, Chen, Zhao, Ma, Zhongwei, Qiu, Haolin, Chai, Shiwei   +4 more
openaire   +1 more source

A Novel Magnetic Field Gradient-Enhanced Excitation Source for Motion-Induced Eddy Current Testing

IEEE Transactions on Instrumentation and Measurement
As production speeds continue to increase, accurately measuring defects during the high-speed motion of samples becomes of significant practical importance.
Bingkun Wei, Lisha Peng, Shuzhi Wen, Jinghua Zhang, Shisong Li, Songling Huang   +5 more
semanticscholar   +1 more source

A Numerical Scheme for Fast and High Accuracy Simulation of Motion-Induced Eddy Current Testing Signals

Nondestructive Testing and Evaluation, 2023
In this paper, an efficient numerical scheme and corresponding fast solver are proposed and implemented for rapid and high-accuracy numerical calculation of the motion-induced eddy current testing (MIECT) forward problems.
Liang Qiao, Hong-En Chen, Wei Guo, Zhi-Jia Wang, Yifan Yang, Shejuan Xie, Zhenmao Chen   +6 more
semanticscholar   +1 more source

Eddy Current and Magnetic Testing of Magnetic Material by Uniform Eddy Current Probe

AIP Conference Proceedings, 2005
Uniform eddy current probe comprised of an exciting tangential coil and a detecting pancake coil simultaneously conducts eddy current testing and magnetic testing of magnetic material. The eddy current testing detects parallel flaws to the magnetic flux and the magnetic testing detects perpendicular flaws.
openaire   +1 more source

Bearing Ball Property Estimation using Multi-frequency Eddy-current Testing

International Instrumentation and Measurement Technology Conference, 2023
The quality of steel balls influences the accuracy, motion performance and service life of the rolling bearing. The eddy-current testing technique plays an important role in the measurement of bearing ball properties, including radius, electrical ...
Zihan Xia, Gang Hu, Ruochen Huang, Xiaofei Liu, A. Peyton, W. Yin, Wuqiang Yang   +6 more
semanticscholar   +1 more source

Analysis and Experimental Testing of a Permanent Magnet Eddy-Current Brake

2005 IEEE Vehicle Power and Propulsion Conference, 2005
Conventional friction braking suffers severe limitations. The concept of integrated contactless magnetic brake was invented to remedy to these problems. The integrated brake combines a conventional friction brake with an eddy-current brake. The present work includes an analysis of the physics of the eddy-current brake by the means of a two-dimensional ...
S.E. Gay, M. Ehsani
openaire   +1 more source

Optimal Magnet Design for Lorentz Force Eddy-Current Testing

IEEE Transactions on Magnetics, 2015
We propose a procedure to determine optimal magnet systems in the framework of the nondestructive evaluation technique Lorentz force eddy-current testing (LET). The underlying optimization problem is clearly defined considering the problem specificity of nondestructive testing scenarios.
Konstantin Weise, Reinhard Schmidt, Matthias Carlstedt, Marek Ziolkowski, Hartmut Brauer, Hannes Toepfer   +5 more
openaire   +1 more source

GMR Magnetic Sensor Arrays for NDE Eddy-Current Testing

AIP Conference Proceedings, 2003
Magnetic sensors based on Giant Magnetoresistance (GMR) and Spin‐Dependent Tunneling (SDT) effects have high, frequency‐independent sensitivity. The small size and low power consumption of these sensors allow them to be used in multiple‐sensor arrays facilitating rapid scanning of an area in a single pass rather than raster scanning.
openaire   +1 more source

Pulsed Eddy Current Testing Based on Gradient Magnetic Field Measurement

2012 Sixth International Conference on Electromagnetic Field Problems and Applications, 2012
Gradient Magnetic Field Measurement (GMFM) has been intensively used in Magnetic Resonance Imaging (MRI). In this paper, we introduce GMFM to Pulsed Eddy Current Testing (PECT) in an effort to enhance the PECT sensitivity to subsurface anomalies in stratified conductors.
Yong Li, Zhenmao Chen, Yong Qi, Meihua Xiao   +3 more
openaire   +1 more source

Residual magnetism effects on the eddy current nondestructive test signal

NDT International, 1987
Nondestructive test techniques based on the principle of eddy currents are being widely used in manufacturing industries to assure internal and surface qualities of materials and components. A problem often encountered in the nondestructive testing of ferrous products is the residual magnetism introduced by some manufacturing processes prior to the ...
openaire   +1 more source