A monitoring signal denoising algorithm of eddy current for outer casing pipe of double-layer pipe

2021 ◽  
Author(s):  
Yourong Chen ◽  
Jiaye Shi ◽  
Heli Jin ◽  
Zhangquan Wang ◽  
Banteng Liu ◽  
...  
Keyword(s):  
Double Layer ◽  
Eddy Current ◽  
Signal Denoising ◽  
Casing Pipe

Differential coupling double-layer coil for eddy current testing with high lift-off

2021 ◽  
pp. 1-1
Author(s):  
Kefan Chen ◽  
Bin Gao ◽  
G.Y. Tian ◽  
Yupei Yang ◽  
Changrong Yang ◽  
...  
Keyword(s):  
Double Layer ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
High Lift ◽  
Current Testing ◽  
Lift Off ◽  
Differential Coupling

Iron loss in FSPMM: 2D FEA-based comparative study between single and double-layer topologies

2015 ◽  
Vol 34 (1) ◽  
pp. 61-75 ◽  
Author(s):  
Asma Masmoudi ◽  
Ahmed Masmoudi
Keyword(s):  
Double Layer ◽  
Eddy Current ◽  
Permanent Magnets ◽  
Single Layer ◽  
Iron Loss ◽  
Permanent Magnet Machines ◽  
Content Type ◽  
Constant Torque ◽  
Harmonic Content ◽  
Iron Losses

Purpose – The purpose of this paper is to compare the study between two topologies of fractional-slot permanent-magnet machines such that: double-layer topology and single-layer one. The comparison considers the assessment of the iron loss in the laminated cores of the magnetic circuit as well as in the permanent magnets (PMs) for constant torque and flux weakening ranges. Design/methodology/approach – The investigation of the hysteresis and eddy-current loss has been carried out using 2D transient FEA models. Findings – It has been found that the stator iron losses are almost the same for both topologies. Whereas, the single-layer topology is penalized by higher iron loss especially the eddy-current ones taking place in the PMs. This is due to their denser harmonic content of the armature air gap MMF spatial repartition. Originality/value – The analysis of the iron loss maps in different parts of each machine including stator and rotor laminations as well as the PMs, in one hand, and the investigation of their variation with respect to the speed, in the other hand, represent the major contribution of this work.

scholarly journals PENINGKATAN SENSITIVITAS SENSOR KOIL DATAR MEMPERGUNAKAN SOFT MAGNETIC VITROVAC

2019 ◽  
Vol 5 (1) ◽  
pp. 57-61
Author(s):  
Tengku Emrinaldi ◽  
Defrianto ◽  
Sultan Fiddunya Fiddunya ◽  
Rahmondia N. Setiadi ◽  
Lazuardi Umar
Keyword(s):  
Double Layer ◽  
Eddy Current ◽  
Printed Circuit Board ◽  
Plate Thickness ◽  
Circuit Board ◽  
Current Sensor ◽  
Soft Magnetic ◽  
Printed Circuit ◽  
Coil Inductance ◽  
The Magnetic Field

This study reports the design of non-magnetic plate thickness sensors based on Eddy Current principld in the form of flat coils. The principle used in the Eddy Current sensor is a change of mutual coil inductance due to the presence of objects in the magnetic field. The coil is made up of single and double layer coil designed using Corel Draw Software based on printed circuit board (PCB) material with dimensions of 152.4 mm x 101.6 mm, which has a track distance of 0.125 m. Single and double layer coil inductance evaluations are carried out using the EVB  LDC 1000 L/V Converter module which converts plate thickness into inductance values. The addition of a 30 mm Vitrovac thin film mounted in the direction of the winding in the 2 mm diameter coil core has been carried out to increase the sensitivity value of the sensor which gives an increase in sensitivity value of S = 0.321 uH / mm or 33.2%. The coil is able to measure plate thickness up to 10mm well.

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