Serrated Edge Design and Field Analysis in Spatial, Time, and Angular Domains for Improving the Field Uniformity of Beam Combiner

2016 ◽  
Vol 64 (3) ◽  
pp. 968-976 ◽  
Author(s):  
Yi Tian ◽  
Rui Xu ◽  
Jiansen Ye ◽  
Rui Shi ◽  
Xin Wang ◽  
...  
Keyword(s):  
Field Analysis ◽  
Beam Combiner ◽  
Field Uniformity ◽  
Angular Domains

scholarly journals Near-field uniformity analysis and compensation for finite-sized beam combiner with the asymmetric layout

2020 ◽  
Vol 14 (13) ◽  
pp. 1671-1681
Author(s):  
Kaizi Hao ◽  
Zhuo Li ◽  
Xin Wang ◽  
Lang Zhou ◽  
Yiting Wang
Keyword(s):  
Near Field ◽  
Beam Combiner ◽  
Field Uniformity

Unified field analysis method for IR/MW micro-mirror array beam combiner

2014 ◽  
Vol 53 (19) ◽  
pp. 4172 ◽  
Author(s):  
Yi Tian ◽  
Gang Sun ◽  
Hui Yan ◽  
Li Zhang ◽  
Zhuo Li
Keyword(s):  
Field Analysis ◽  
Analysis Method ◽  
Unified Field ◽  
Beam Combiner

Flow Field Analysis and Experimental Investigation of Electrochemical Etching

2020 ◽  
Vol 841 ◽  
pp. 369-374
Author(s):  
Yuan Long Chen ◽  
Chao Hao Guo ◽  
Pei Xuan Chen ◽  
Zhi Liu ◽  
An Sheng Lv
Keyword(s):  
Flow Field ◽  
Pressure Distribution ◽  
Electrochemical Etching ◽  
Field Analysis ◽  
Pressure Curve ◽  
Vector Diagram ◽  
Electrolyte Flow ◽  
Field Uniformity ◽  
Flow Field Characteristics ◽  
Flow Field Analysis

. Electrochemical etching is widely used to process refractory metals such as tungsten and molybdenum. Flow field is one of the crucial factors that influence the surface quality in electrochemical etching. In this paper, the electrochemical etching flow field was analyzed via FLUENT, the characteristics of flow field in electrochemical etching are studied, furthermore, the effects of four different outlet forms of electrolyte on flow field uniformity, electrolyte velocity and pressure distribution are investigated. Under the same electrolyte flow rate, the flow field characteristics of different outlet forms are analyzed by velocity vector diagram, pressure distribution nephogram, velocity and pressure curve diagram. The simulation results indicate that stable electrolyte velocity and uniform pressure distribution of flow field are obtained when the outlet form of electrolyte adopts the optimized flat. Finally, the fixture for this outlet form is designed and fabricated, and experimental verification is carried out, which shown that the flow field is uniform and the crystal plane of the workpiece is well-distributed which according with the process requirements.

Comparison of high- and low-frequency electromagnetic field analysis

1993 ◽  
Vol 3 (3) ◽  
pp. 363-371 ◽  
Author(s):  
A. Konrad ◽  
I. A. Tsukerman
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
Field Analysis

Analysis of field uniformity and quantitative evaluation of subsurface pitting corrosion in conductors via GPEC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 19-29
Author(s):  
Shuting Ren ◽  
Yong Li ◽  
Bei Yan ◽  
Jinhua Hu ◽  
Ilham Mukriz Zainal Abidin ◽  
...  
Keyword(s):  
Quantitative Evaluation ◽  
Eddy Current ◽  
Pitting Corrosion ◽  
Gradient Field ◽  
Uniform Field ◽  
Eddy Current Method ◽  
Optimal Position ◽  
Pulsed Eddy Current ◽  
Field Uniformity ◽  
Processing Algorithms

Structures of nonmagnetic materials are broadly used in engineering fields such as aerospace, energy, etc. Due to corrosive and hostile environments, they are vulnerable to the Subsurface Pitting Corrosion (SPC) leading to structural failure. Therefore, it is imperative to conduct periodical inspection and comprehensive evaluation of SPC using reliable nondestructive evaluation techniques. Extended from the conventional Pulsed eddy current method (PEC), Gradient-field Pulsed Eddy Current technique (GPEC) has been proposed and found to be advantageous over PEC in terms of enhanced inspection sensitivity and accuracy in evaluation and imaging of subsurface defects in nonmagnetic conductors. In this paper two GPEC probes for uniform field excitation are intensively analyzed and compared. Their capabilities in SPC evaluation and imaging are explored through simulations and experiments. The optimal position for deployment of the magnetic field sensor is determined by scrutinizing the field uniformity and inspection sensitivity to SPC based on finite element simulations. After the optimal probe structure is chosen, quantitative evaluation and imaging of SPC are investigated. Signal/image processing algorithms for SPC evaluation are proposed. Through simulations and experiments, it has been found that the T-shaped probe together with the proposed processing algorithms is advantageous and preferable for profile recognition and depth evaluation of SPC.

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