The Pouring Process Optimization for the Conductive Slip-Rin

2019 ◽  
Vol 943 ◽  
pp. 48-52
Author(s):  
Kun Liang Zhang ◽  
Bin Hong ◽  
Li Peng Zhang ◽  
Ya Ji ◽  
Zhen Dong Gao ◽  
...  
Keyword(s):  
Process Optimization ◽  
Structural Features ◽  
Vacuum Packaging ◽  
Differential Pressure ◽  
Experimental Results ◽  
Concentric Ring ◽  
Packaging Technology ◽  
Molding Compounds ◽  
Slip Ring

Based on its specific structural features, the packaging technology is extraordinary significant for the conductive slip-ring (CSR) encapsulating with epoxy molding compounds (EMC). In this work, a modified vacuum packaging technology has been proposed which includes a pouring process.By the construction of the relevant models, the packaging technology was calculated by MATLAB and discussed. It indicates that the EMC can be easily poured into the concentric ring slit of the CSR only with a differential pressure of 200 Pa between the outside pressure and the inside pressure. On the bases of the experimental results; the EMC can easily flow up from the bottom to the top of the CSR packaging mold vertically.

A Modified Vacuum Packaging Technology for the Conductive Slip-Ring Encapsulating with Epoxy Molding Compounds

2019 ◽  
Vol 943 ◽  
pp. 3-7
Author(s):  
Bin Hong ◽  
Zhen Dong Gao ◽  
Jian Ye Gao ◽  
Ya Ji ◽  
Shun Ya Lv
Keyword(s):  
Thermal Stability ◽  
Structural Features ◽  
Vacuum Packaging ◽  
Experimental Results ◽  
Packaging Technology ◽  
Molding Compounds ◽  
Slip Ring

Due to its specific structural features, the packaging technology is quite essential for the conductive slip-ring (CSR) encapsulating with epoxy molding compounds (EMC). In this work, a modified vacuum packaging technology has been proposed which includes a pouring process and a followed soaking process. Based on the experimental results; the reliability of the CSR packaged obtains a significant improvement as its thermal stability and electric insulating property are obviously advanced, comparing with that fabricated by the normal vacuum packaging method.

The Soaking Process Optimization for the Conductive Slip-Ring

2019 ◽  
Vol 943 ◽  
pp. 53-57
Author(s):  
Li Peng Zhang ◽  
Bin Hong ◽  
Kun Liang Zhang ◽  
Jian Ye Gao ◽  
Ya Ji ◽  
...  
Keyword(s):  
Process Optimization ◽  
Structural Features ◽  
Vacuum Packaging ◽  
Soaking Time ◽  
Packaging Technology ◽  
Molding Compounds ◽  
Slip Ring

Due to its specific structural features, the packaging technology is extraordinary significant for the conductive slip-ring (CSR) encapsulating with epoxy molding compounds (EMC). In this work, a modified vacuum packaging technology was put forward for which includes a soaking process.By the construction of the soaking models, the packaging technology was calculated by MATLAB and discussed. The soaking model reveals that the soaking time is strongly influenced by the space of the exhaust vent and the added pressure. When the soaking pressure is set at 6 atm with the vent of 0.02 mm width, the EMC can be completely soaked into the tiny spaces of the CSR in 5 min.

scholarly journals Vacuum Packaging Technology of AC-PDP using Direct-Joint Method

2001 ◽  
Vol 2 (4) ◽  
pp. 34-38 ◽  
Author(s):  
Duck-Jung Lee ◽  
Yun-Hi Lee ◽  
Gwon-Jin Moon ◽  
Jun-Dong Kim ◽  
Won-Do Choi ◽  
...  
Keyword(s):  
Vacuum Packaging ◽  
Packaging Technology ◽  
Joint Method

SEGMENTATION OF HANDWRITTEN CHINESE CHARACTERS FROM DESTINATION ADDRESSES OF MAIL PIECES

2002 ◽  
Vol 16 (01) ◽  
pp. 85-96 ◽  
Author(s):  
YUE LU ◽  
CHEW LIM TAN ◽  
PENGFEI SHI ◽  
KEHUA ZHANG
Keyword(s):  
Hough Transform ◽  
Structural Features ◽  
Experimental Results ◽  
Chinese Characters ◽  
Topological Relations ◽  
Destination Address

In this paper, we illustrate a method to segment handwritten Chinese characters from destination addresses of mail pieces. Fast Hough transform is utilized to detect the reference lines preprinted on the mail piece. In the segmentation, subassemblies of Chinese characters are merged based on the structural features of Chinese characters and the subassemblies' topological relations, viz. upper–lower, inside–outside and left–right relations. The width of subassemblies and the spacing between neighboring subassemblies in the whole image of the destination address are analyzed to guide the merging of the left–right subassemblies. Experimental results with real mail piece images show that the proposed approach has achieved a promising performance for segmenting handwritten Chinese characters.

A Comprehensive Understanding on Sewability of Natural Biomaterial: An Insight on Process Optimization during Leather Manufacture

2021 ◽  
Vol 116 (7) ◽  
Author(s):  
Gladstone Christopher Jayakumar ◽  
K Phebe Aaron ◽  
K Krishnaraj
Keyword(s):  
Physical Properties ◽  
Process Optimization ◽  
Three Dimensional ◽  
Experimental Results ◽  
Comprehensive Understanding ◽  
Microscopic Images ◽  
Dimensional Matrix ◽  
Natural Biomaterial ◽  
Leather Manufacture

Leather is three-dimensional matrix possessing unique properties which makes it more comfortable for daily use. Garments made from leathers are preferred choice owing to their multifaceted properties as compared to textiles in the colder regions. In the present study, an attempt has been made to evaluate the influence of phenolic syntan and synthetic fatliquor on the sewability and physical properties of post tanned leathers. From the experimental results, it is observed that the concentration of phenolic syntan and fatliquor influences leather sewability. Optical microscopic images of leathers also show that they are more compact and tighter with higher percentage of syntan. The study provides an insight in understanding the optimum usage of post tanning chemicals for better sewing properties without affecting the leather matrix adversely.

Process Optimization of Cefradine/ Montmorillionite in Solution Intercalation

2011 ◽  
Vol 306-307 ◽  
pp. 831-834
Author(s):  
Yan Zhao Zhao ◽  
Wen Ji Guo ◽  
Lan Wang
Keyword(s):  
Experimental Design ◽  
Process Optimization ◽  
Reaction Temperature ◽  
Drug Concentration ◽  
Orthogonal Design ◽  
Experimental Results ◽  
Mass Ratio ◽  
Drug Load ◽  
Solution Intercalation ◽  
Initial Concentration

One-factor-at-a-time design and orthogonal design were used in the experimental design to optimize the process of preparation for Cefradine /Montmorillionite composites in solution intercalation. Experimental results indicate that drug initial concentration was the most significant condition for optimal preparation of composites, intercalation time and reaction temperature were not so significant. In our paper, the maximum drug load occurred at reaction temperature of 60°C with the intercalation time of 2h when the drug concentration (mass ratio of cefradine to MMT) was 2:1.

The Design and Simulation of Vibratory Ring Gyroscope

2014 ◽  
Vol 609-610 ◽  
pp. 1029-1032 ◽  
Author(s):  
Mei Yu Meng ◽  
Wen Dong Zhang
Keyword(s):  
Modeling And Simulation ◽  
Quality Factor ◽  
Resonant State ◽  
Vacuum Packaging ◽  
Q Factor ◽  
Wafer Level ◽  
Temperature Drift ◽  
High Quality ◽  
Small Temperature ◽  
Packaging Technology

This paper deals with design and simulation of vibratory ring gyroscope which has good performance as resisting vibration, resisting impact, small temperature drift because of the inherent symmetry of structure. The good performance of gyroscope has verified by detailed modeling and simulation. The manufacture of gyroscope using wafer level vacuum packaging technology making the gyroscope has high quality factor .At last we test the gyroscope and the Q factor is 20300 by detecting the resonant state of the gyroscope.

Colony formation in bacteria: experiments and modeling

Biofilms ◽  
2004 ◽  
Vol 1 (4) ◽  
pp. 305-317 ◽  
Author(s):  
M. Matsushita ◽  
F. Hiramatsu ◽  
N. Kobayashi ◽  
T. Ozawa ◽  
Y. Yamazaki ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Colony Formation ◽  
Nutrient Concentration ◽  
Active Form ◽  
Experimental Results ◽  
Bacterial Cells ◽  
Concentric Ring ◽  
Diffusion Limited Aggregation ◽  
Diffusion Limited ◽  
Concentration Diffusion

We present experimental results of colony formation in bacteria as an example of pattern formation resulting from reproduction and movement in biological populations. The bacterium Bacillus subtilis is known to exhibit at least five distinct types of colony pattern, depending on the substrate softness and nutrient concentration: diffusion-limited aggregation (DLA), compact Eden-like, dense branching morphology (DBM), concentric ring-like, and disk. We established a morphological diagram of the colony patterns, and then examined and characterized both macroscopically and microscopically how the the colonies grow. There seem to be two kinds of bacterial cells – active and inactive – and the active form drives the colony interfaces outwards. The active cells may be clearly distinguished from the inactive ones as they form the characteristic fingernail-like structure at the tips of growing branches of the DBM colony. The concentric ring-like colony is formed as a consequence of repeated alternate migration and resting of the growing interface, the cycle time for which seems to be independent of the substrate softness and nutrient concentration. So far there have been several phenomenological models proposed to qualitatively explain or reproduce the patterns observed in bacterial colonies. A few of them are reviewed here, systematically and critically, in light of our experimental results.

Lab scale study on electrocoagulation defluoridation process optimization along with aluminium leaching in the process and comparison with full scale plant operation

2011 ◽  
Vol 63 (12) ◽  
pp. 2788-2795 ◽  
Author(s):  
Poonam Gwala ◽  
Subhash Andey ◽  
Vasant Mhaisalkar ◽  
Pawan Labhasetwar ◽  
Sarika Pimpalkar ◽  
...  
Keyword(s):  
Drinking Water ◽  
Process Optimization ◽  
Current Density ◽  
Fluoride Concentration ◽  
Full Scale ◽  
Experimental Results ◽  
Fluoride Removal ◽  
Electrode Polarization ◽  
Operational Conditions ◽  
Aluminium Leaching

An excess or lack of fluoride in drinking water is harmful to human health. Desirable and permissible standards of fluoride in drinking water are 1.0 and 1.5 mg/L, respectively, as per Indian drinking water quality standards i.e., BIS 10500, 1991. In this paper, the performance of an electro-coagulation defluoridation batch process with aluminium electrodes was investigated. Different operational conditions such as fluoride concentration in water, pH and current density were varied and performance of the process was examined. Influence of operational conditions on (i) electrode polarization phenomena, (ii) pH evolution during electrolysis and (iii) the amount of aluminium released (coagulant) was investigated. Removal by electrodes is primarily responsible for the high defluoridation efficiency and the adsorption by hydroxide aluminium floc provides secondary effect. Experimental data obtained at optimum conditions that favored simultaneous mixing and flotation confirmed that concentrations lower than 1 mg/L could be achieved when initial concentrations were between 2 and 20 mg/L. pH value was found to be an important parameter that affected fluoride removal significantly. The optimal initial pH range is between 6 and 7 at which effective defluoridation and removal efficiencies over 98% were achieved. Furthermore, experimental results prominently displayed that an increase in current density substantially reduces the treatment duration, but with increased residual aluminium level. The paper focuses on pilot scale defluoridation process optimization along with aluminium leaching and experimental results were compared with a full-scale plant having capacity of 600 liter per batch.

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