Simulation of the resonant eddy-current converter of the transformer type for the gap control between magnetic core and ferromagnetic samples

2019 ◽  
Vol 11 ◽  
Author(s):  
D. Trushakov ◽  
O. Kozlovskyi ◽  
S. Rendzinyak
Keyword(s):  
Eddy Current ◽  
Magnetic Core ◽  
Current Converter ◽  
Transformer Type ◽  
Gap Control ◽  
Eddy Current Converter

scholarly journals Research on the welded seams of aluminum alloys using super-miniature eddy current transducers

2018 ◽  
Vol 212 ◽  
pp. 01001
Author(s):  
Sergey Dmitriev ◽  
Vladimir Malikov ◽  
Anatoly Sagalakov
Keyword(s):  
Eddy Current ◽  
Cutoff Frequency ◽  
Technical Information ◽  
Measurement Procedure ◽  
Measuring System ◽  
Friction Stir ◽  
Current Converter ◽  
Transformer Type ◽  
Aluminum Plates ◽  
Welded Seam

Based on the eddy current transducer of the transformer type, a measuring system has been developed that makes it possible to investigate the welded joints obtained by friction stir welding (FSW). The main technical information about the eddy current converter being used is given, and a measurement procedure is described that allows to search for defects in welded seams of aluminum plates. The device allows to automatically change the main operating frequency of the device and the cutoff frequency of the filtration system. The experiments were carried out on aluminum-magnesium alloy plates being connected by friction welding. In the article, the results of measurements are presented, allowing to estimate the quality of a welded seam and to answer a question on reliability of welding.

Defect Parameter Determination for Cylindrical Products

2013 ◽  
Vol 718-720 ◽  
pp. 521-524
Author(s):  
Kai Yu Hao ◽  
Vadim Miroshnikov
Keyword(s):  
Eddy Current ◽  
Output Signal ◽  
Parameter Determination ◽  
Defect Parameter ◽  
Analytical Expression ◽  
Current Converter ◽  
Eddy Current Converter ◽  
Calculating Model

A calculating model is proposed to determinate the size of defect for extended product. The developed design of through-coil eddy current converter enable the output signal to determinate the parameter of defect. The analytical expression depending on the volume of identifiable defect is obtained.

scholarly journals Investigation of steel to dielectric transition using microminiature eddy-current converter

2018 ◽  
Vol 143 ◽  
pp. 03005
Author(s):  
Vladimir Malikov ◽  
Sergey Dmitriev ◽  
Alexey Ishkov ◽  
Alexander Katasonov ◽  
Anatoly Sagalakov
Keyword(s):  
Eddy Current ◽  
Experimental Studies ◽  
Current Method ◽  
Operating Life ◽  
Eddy Current Method ◽  
Software Complex ◽  
Linear Behavior ◽  
Current Converter ◽  
Eddy Current Converter ◽  
Dielectric Transition

The research aims to develop a microminiature converter for electrical steel investigation. The research topic is considered relevant due to the need for evaluation and forecasting of safe operating life of electric steel products. The authors determined the capability to study steel characteristics at different depths based on variations of eddy-current converter amplitude at the steel-dielectric boundary. A microminiature transformer-type converter was designed, which enables to perform local investigations of ferromagnetic materials using eddy-current method based on local studies of the steel electrical conductivity. Having the designed converter as a basis, a hardware-software complex was built to perform experimental studies of steel at the interface boundary. A system was developed for automated converter relocation above the studied object at a specified velocity. Test results are reported for a specimen with continuous and discrete measurements taken at different frequencies. Response dependence of eddy-current converter was found to demonstrate non-linear behavior at steel to dielectric transition. The effect of gap between the eddy-current converter and the test object is investigated.

scholarly journals Investigation of steel to dielectric transition using microminiature eddy-current converter

2018 ◽  
Vol 143 ◽  
pp. 03005
Author(s):  
Vladimir Malikov ◽  
Sergey Dmitriev ◽  
Alexey Ishkov ◽  
Alexander Katasonov ◽  
Anatoly Sagalakov
Keyword(s):  
Eddy Current ◽  
Current Converter ◽  
Eddy Current Converter ◽  
Dielectric Transition
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