• Title, Summary, Keyword: processing condition

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Determination of Whiteness Condition for Efficient Milling in Rice Processing Complex (RPC에서 효율적인 도정을 위한 백도조건 결정)

  • Kim O. W.;Kim H.;Kim D. C.;Kim S. S.
    • Journal of Biosystems Engineering
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    • v.30 no.4
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    • pp.242-248
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    • 2005
  • There was no useful milling standard to produce high quality milled rice efficiently and adequately in Rice Processing Complex. Therefore, the whiteness of milled rice produced Rice Processing Complexes were different according to Rice Processing Complexes and milling periods at the same Rice Processing Complex. This research was carried out to contribute the production and distribution of high quality milled rice through determination of whiteness condition of milled rice as a milling stndard based on degree of bran removal using New $May-Gr\ddot{u}wald$ reagent dyeing method and taste of cooked rice. The optimum whiteness value of milled rice for efficient milling in Rice Processing Complex was found to be from 40 to 41, while the degree of milling was from $8.9\%\;to\;9.2\%.$ At this whiteness condition, the first derivative of whiteness value according to degree of milling was higher than the average value from brown rice to well milled rice, and the broken kernel ratio was from $3.0\%\;to\;3.4\%.$ This whiteness condition ($40\~41$) could be considered as a milling condition in Rice Processing Complex.

Use of Processing Maps to Evaluate the Forming Condition during Ring Rolling (변형공정지도를 활용한 링롤링 공정 조건 평가)

  • Lee, H.J.;Kang, G.P.;Kim, Y.H.
    • Transactions of Materials Processing
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    • v.25 no.1
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    • pp.5-11
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    • 2016
  • The control of the roll velocities is essential in maintaining stability during ring rolling, but such control is difficult. The determination of the best roll velocities can be helped with the use of FE simulations and processing maps, which give the useful information such as power dissipation and flow instability for hot metal forming processes. In the current study, the workability of 7050 aluminum alloy is evaluated by using processing map. With the developed information, the stability of the ring rolling condition, called the Constant Growth Velocity Condition (CGVC), is evaluated.

The Optimization Processing on a Expanded Tube Using Mini-Tab (Mini-Tab을 이용한 D-Tube 확관 최적 공정 설계)

  • Joo, Won-Kyung;Kwun, Yong-Gu;Bae, Sung-In;Song, Jung-Il
    • Proceedings of the KSME Conference
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    • pp.751-755
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    • 2007
  • The purpose of this study is to find the optimization processing on expanded tube using Taguchi method which was generally used to analyze the effects of various control factors. Mini-Tab is a good for program that is making a selection using Taguchi method. The results of experimental test and analysis are as follows. Optimization processing on a expanded tube is dependent on lubrication condition. The slight eccentricity of expanded tube was obtained a good results on the expanded tube. When expending processing on the expanded tube was performed, the test specimens were almost unaffected by changing pressure loading. The tendencies of test results were related to lubrication condition and eccentricity in expending processing. As a result, a proper lubrication condition and eccentricity in the step of design will improve the optimization processing of expanded tube.

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Evaluation of Mechanical Characteristic and Investigation on Optimum Condition in Friction Stir Processing for 5456-H116 Al Alloy (알루미늄 5456-H116 합금에 대하여 최적 마찰교반 프로세싱 조건 규명 및 기계적 특성 평가)

  • Park, Jae-Cheul;Kim, Seong-Jong
    • Journal of the Korean institute of surface engineering
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    • v.42 no.1
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    • pp.13-20
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    • 2009
  • Friction stir welding(FSW) was developed as a new solid state welding technique by The Welding Institute (TWI). On the basis of FSW, a new processing technique, friction stir processing (FSP), has recently been developed. FSP has been applied to cast aluminum alloy to modify the microstructure to enhance mechanical characteristic. FSP is a new solid state processing technique for microstructural modification in metallic materials. FSP has been applied to aluminum alloy to modify the microstructure to enhance mechanical characteristic. In this study, we investigated optimum condition friction stir processing with the evaluation of mechanical characteristic for 5456-H116 Al alloy. The mechanical characteristics of base metal similar with in 15 mm/min, 250 RPM with full screw probe. This condition is concluded that optimum friction stir processing condition. The result of this investigation will be able to application for repair of welding part for aluminum ship.

A Study on the Optimum Image Capture of Wear Particle for Condition Monitoring of Machine (기계의 상태 모니터링을 위한 최적의 마멸분 영상 획득 방법에 관한 연구)

  • Cho, Yon-Sang;Park, Heung-Sik
    • Tribology and Lubricants
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    • v.23 no.6
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    • pp.301-305
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    • 2007
  • The wear particle analysis has been known as very effective method to foreknow and decide a moving situation and a damage of machine parts by using the digital computer image processing. But it was not laid down and trusted to calculate shape parameters of wear particle and wear volume. In order to apply image processing method in the foreknowledge and decision of lubricated condition, it needs to verify the reliability of the calculated data by the image processing and to lay down the number of images and the amount of wear particle in one image. In this study, the lubricated friction experiment was carried out in order to establish the optimum image capture with the SM45C specimen under experiment condition. The wear particle data were calculated differently according to the number of image and the amount of wear particle in one image.

Development of Distribution Transformer with Condition Monitoring Sensors and Data Processing Unit (상태감시용 센서를 내장한 배전용 변압기 및 데이터 처리장치 개발)

  • Jung, Joon-Hong;Yu, Nam-Cheol
    • Proceedings of the KIEE Conference
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    • pp.201_202
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    • 2009
  • This paper presents a design methodology of a distribution transformer with condition monitoring sensors and its data processing unit. The proposed distribution transformer includes various type of condition monitoring sensors such as load current/voltage, temperature and heat aging of insulating oil. The data processing unit is installed at the distribution transformer site. It integrates sensed data and transmits these to a central server system. The proposed distribution transformer and its data processing unit will help an on-line condition monitoring system for distribution transformers.

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A Study on Injection Molding Process and Quality Monitoring by Response Surface Analysis (반응표면 분석법에 의한 사출공정 및 품질 모니터링에 관한 연구)

  • Min, Byeong-Hyeon;Lee, Kyeong-Don;Yu, Byung-Kil
    • IE interfaces
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    • v.9 no.1
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    • pp.13-24
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    • 1996
  • Quality of injection molded parts is dependent on both mold design and processing conditions. From the mold design point of view, an optimal shrinkage should be used to compensate the shrinkage of molded parts. From the processing point of view, it is important to analyze the priority of processing conditions because a number processing conditions affect the quality of molded parts. Processing analysis employing the design of experiment was performed, and the shrinkage of molded part was considered as a characteristic parameter to improve the quality. As the result of the analysis of variance on SN ratio of a characteristic value, injection speed and bolding pressure were selected as two effective process parameters. Regression analysis on shrinkage and processing conditions was carried out, and an optimal processing condition was obtained by the response surface analysis. Shrinkage at the optimal condition could be used to reduce the number of try-cut at the step of mold making. The ranges of indirect control parameter, such as maximum cavity pressure or weight, measured at the optimal processing condition were used for monitoring the quality of molded parts in process.

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Flame Image Processing System for Combustion Condition Monitoring of Pulverized Coal Firing Boilers in Thermal Power Plant (발전용 미분탄 보일러의 연소 상태 감시를 위한 화염 영상 처리 시스템)

  • Baek, Woon-Bo;Shin, Jin-Ho
    • Journal of Institute of Control, Robotics and Systems
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    • v.12 no.11
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    • pp.1119-1123
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    • 2006
  • The flame image processing and analysis system has been investigated for the optimal pulverized coal firing of thermal power plant, especially for lower nitrogen oxide generation and more safe operation. We aimed at gaining the relationship between burner flame image information and emissions of nitrogen oxide and unburned carbon in furnace utilizing the flame image processing methods, by which we quantitatively determine the condition of combustion on the individual humors. Its feasibility test was undertaken with a pilot furnace for coal firing, through which the system was observed to be effective for the monitoring of the combustion condition of pulverized coal firing boilers.

Development of a GPS Data Processing S/W for Cadastral Survey (지적측량을 위한 GPS 자료처리 S/W 개발)

  • 우인제;이종기;김병국
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • pp.507-512
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    • 2004
  • Research that establish new cadastral survey model that use GPS to introduce GPS observation technique in cadastral survey and research that develop connection technologies are gone abuzz. The purpose of this research is to keep in step in such trend and grasp present condition and performance of surveying connection to common use GPS data processing software, and analyze data processing algorithm, and develop suitable GPS data processing software in our real condition regarding GPS data processing and result of control point calculation. This research studies analysis common use software and error occurrence by data processing method that college and company have. Also, It analyzes algorithm that is applied to existing GPS data processing software. After that we study algorithm that is most suitable with cadastral survey and then develop cadastral survey calculation software for new cadastral control points

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A Condition Processing System of Active Rules Using Analyzing Condition Predicates (조건 술어 분석을 이용한 능동규칙의 조건부 처리 시스템)

  • Lee, Gi-Uk;Kim, Tae-Sik
    • The KIPS Transactions:PartD
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    • v.9D no.1
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    • pp.21-30
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    • 2002
  • The active database system introduces the active rules detecting specified state. As the condition evaluation of the active rules is performed every time an event occurs, the performance of the system has a great influence, depending on the conditions processing method. In this paper, we propose the conditions processing system with the preprocessor which determines the delta tree structure, constructs the classification tree, and generates the aggregate function table. Due to the characteristics of the active database through which the active rules can be comprehended beforehand, the preprocessor can be introduced. In this paper, the delta tree which can effectively process the join, selection operations, and the aggregate function is suggested, and it can enhance the condition evaluation performance. And we propose the classification tree which effectively processes the join operation and the aggregate function table processing the aggregate function which demands high cost. In this paper, the conditions processing system can be expected to enhance the performance of conditions processing in the active rules as the number of conditions comparison decreases because of the structure which is made in the preprocessor.