• Title/Summary/Keyword: Cooperation Process

Search Result 2,812, Processing Time 0.021 seconds

Finite Element Analysis for the Forging Process Design of a Blind Rivet (블라인드 리벳의 단조공정설계를 위한 유한요소해석)

  • Byun, Hong-Seok
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.10 no.10
    • /
    • pp.2577-2582
    • /
    • 2009
  • A rivet which can fasten two parts is one of an important mechanical elements. In this study, the process design of a blind revet is implemented using finite element method in order to manufacture it which can resist high vibration and has strong coherence between two parts. Considering plastic flow, ease of manufacture, high strength, material loss, and so forth, an optimal four-stage process is proposed by finite element analysis and process design rules. In addition, the finite element simulation results such as shape of the forged rivet, strain distribution and forging load are investigated for the usefulness of the forging process of the blind rivet. These results will be contributed to the forging process design and the die design of the blind rivet.

A Simulation Study on the Carbon Dioxide Removal Process Using Aqueous Amine Solution in the GTL Process (GTL 공정에서 아민 수용액을 이용한 이산화탄소 제거공정의 전산모사에 대한 연구)

  • Cho, Jung-Ho;Lee, Ji-Hwan
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.12 no.7
    • /
    • pp.3334-3340
    • /
    • 2011
  • In this study, a computer simulation work has been performed for the carbon dioxide removal process using aqueous amine solution in the GTL (Gas To Liquids) process. 30wt% DEA(diethnaol amine) aqueous solution was utilized as a carbon dioxide remvoal agent and an absorber-stripper two-columns configuration was used. Kent-Eisenburg modeling equation built-in amine specicial package was used for the modeling of the carbon dioxide removal process. PRO/II with PROVISION 9.0, a commercial process simulator was used. Through this simulation study, heat and material balance was obtained and packing column diameter and column height were also estimated.

Identifying Causes of Industrial Process Faults Using Nonlinear Statistical Approach (공정 이상원인의 비선형 통계적 방법을 통한 진단)

  • Cho, Hyun-Woo
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.13 no.8
    • /
    • pp.3779-3784
    • /
    • 2012
  • Real-time process monitoring and diagnosis of industrial processes is one of important operational tasks for quality and safety reasons. The objective of fault diagnosis or identification is to find process variables responsible for causing a specific fault in the process. This helps process operators to investigate root causes more effectively. This work assesses the applicability of combining a nonlinear statistical technique of kernel Fisher discriminant analysis with a preprocessing method as a tool of on-line fault identification. To compare its performance to existing linear principal component analysis (PCA) identification scheme, a case study on a benchmark process was performed to show that the fault identification scheme produced more reliable diagnosis results than linear method.

A Study on the Model of Inter-Korean Economic Integration Based on Industrial Cooperation (산업협력 기반 한반도경제정책의 구상)

  • Han, Hongyul
    • 사회경제평론
    • /
    • v.31 no.3
    • /
    • pp.29-53
    • /
    • 2018
  • This study provides a model of inter-Korean economic cooperation suggesting that economic cooperation should be centered on industrial cooperation. As an independent economic zone, the two Koreas will go through a gradual and functional process of cooperation. Also, economic convergence through 'openness and integration' of both markets is a pre-requisite of successful economic integration on the Korean peninsula. This success of the process requires industrialization of North Korea. This study suggests a model of 'the Corea Industrial Development Community on the Korean Peninsula. It aims to support industrialization of the North Korean economy as well as promotion of South Korea's SME competitiveness. It would help meet the demand for improvement of living conditions of North Korean people. Main policy measures includes: 1) co-effort to develop North Korea's provincial industrial zones, 2) upgrading North Korea's 'Jangmadang' into a highly efficient distribution market. Finally, through the construction of the Joint Industrial Development Zone, it is necessary to create a production sharing module for both Korea's industries.

A Study of Disinfection Process Automation through Control Logic Program Development (제어로직 프로그램 개발을 통한 소독공정 자동운전에 관한 연구)

  • Park, Jong-Duk;Shin, Gang-Wook;Hong, Sung-Taek;Lee, Chang-Goo
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.12 no.8
    • /
    • pp.3644-3653
    • /
    • 2011
  • This study proposes the automation of disinfection process in water treat plant to reach target effluent chlorine concentration rate according to chlorine consumption rate by varying travel time. Hydraulic analysis about the process and local facility was surveyed first and the program for automatic operation was developed to solve current problem, whose applied result was presented and proved to be better than present controller. Especially using multi variable process algorithm, the correlation coefficient is analyzed between environment factor and reaction time, and process control prove to be stable through model estimation with optimal control input.

A Study on the Flow Forming Process to Develop the Main Part of Auto Transmission of Automobile (자동차용 Auto Transmission 핵심부품 개발을 위한 Flow Forming 공정의 성형성 연구)

  • 김승수;나경환;최석우;박훈재;임성주;윤덕재
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.1 no.2
    • /
    • pp.21-26
    • /
    • 2000
  • Flow forming is a chipless metal forming method for axi-symmetric parts, which is more economical. efficient and versatile method of producing parts than the other sheet metal forming process such as stamping or deep drawing. In this study, flow forming process with 1-Roller is applied to produce auto-transmission parts of automobiles which have been produced by Press drawing process so far. It can be known that flow forming process is applicable to the flexible manufacturing system due to the low cost for the establishment and it can be combined with press forming process to promote productivity and to improve the accuracy of products.

  • PDF

A Study on Deep Etching technology for MEMS process (MEMS 가공을 위한 실리콘 Deep Etching 기술 연구)

  • 김진현;이종권;류근걸;이윤배;이미영;김우혁
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.5 no.2
    • /
    • pp.128-131
    • /
    • 2004
  • In this study Bosch etching process repeating etch and deposition by STS-ICP ASEHR was evaluated. Fundamentally etch depth changes were affected by thickness of deposited PR, $SiO_2$ and depth, and pattern size on the substrate. However etch rates were observed to be changed by variable parameters such as platen power, coil power, and process pressure. Etch rate showed $1.2\mu{m}/min$ and sidewall profile showed $90\pm0.2^\circ$ with platen power 12W, coil power 500W, and etch/passivation cycle 6/7sec. It was confirmed that this result was very typical to Bosch process utilizing ICP.

  • PDF

Development on the Process Control System for Full Gate Visual Test of LCD Manufacturing Process (LCD 생산공정의 전게이트 시각 검사를 위한 공정 제어장치 개발)

  • Park, Hyoung-Keun
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.10 no.7
    • /
    • pp.1725-1728
    • /
    • 2009
  • This research developed process control device and FGV pattern generating device essential for full gate visual inspection to improve process so that defect detection capability may be maximized in specified environment. The devices developed in this research, which can be swiftly replaced in case loss or error occurs, are anticipated to improve module yield as well as maintain tact loss near '0'. In addition, as a result of mounting H/W and S/W system to control detailed operation sequence in production line and executing performance check and verification, detection rates were 98.1% and 99.1% respectively for pixel defect by tact and line defect, and yield of the entire module process including gate and visual level test increased up to 98.3%.

Ion Exchange Behavior of Soda-Lime-Silicate Glass by Advanced Ion Exchange Process (새로운 이온교환 프로세스에 의한 Soda-Lime-Silicate 유리의 이온교환 거동)

  • 이회관;황성건;이용수;강원호
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.5 no.2
    • /
    • pp.98-102
    • /
    • 2004
  • Ion exchange behavior and property change of soda-lime-silicate glass by advanced ion exchange process were investigated. Refractive index, specific gravity and optical transmittance were changed similarly to $K^+$ ion penetration depth, and amount of ion exchange increased with the increase of the time and temperature. Especially, thermal expansion decreased greatly because of the structural compaction and residual stress by ion exchange process.

  • PDF

Controller for Gas Leakage Protection in Semiconductor Process Chamber (반도체 제조장비용 챔버 가스누출 방지를 위한 제어모듈 개발)

  • Park Sung-Jin;Lee Eui-Yong;Sul Yong-Tae
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.6 no.5
    • /
    • pp.373-377
    • /
    • 2005
  • In this paper the gas leakage controller in processing chamber for semiconductor manufacturing is proposed. A pressure sensor is connected between the final valve and the numeric valve. A pressure sensor signal and a numeric valve signal are controlled by a proposed digital circuit module. Gas leakage condition, producing by 2nd plasticity in semiconductor process, display at LED. The proposed controller module is useful for monitoring the gas flow for preventing the critical process gas leakage.

  • PDF