• Title/Summary/Keyword: KAIS TOOL

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Development of a Measurement Tool for Radiation Safety Regulations (방사선안전규제 측정도구 개발)

  • Han, Eun-Ok
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.12
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    • pp.6203-6207
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    • 2012
  • The aim of the study was to develop an objective measurement tool, which could measure radiation safety regulations as an advanced research to draw evidentiary conclusions for the rationalization of radiation safety regulations as organizations continuously increase consumption of radiation material. The survey was based on the contents of Vol 1~21 of US NRC NUREG 1556 (Consolidated Guidance About Materials Licenses) and material from the Nuclear Safety Act which was based on radiation safety managers who are responsible for about 10% of the domestic registered organizations for radiation usage. As a result of the analysis, 3 main causes were extracted based on 20 questions. Each causes were named as Cause 1: 'Radioactive Safety Regulations Requirements', Cause 2: 'Compatibility of Actual Safety Regulation', and Cause 3: 'RI/RG radiation Source Classification' respectively. The dispersal explanations of each causes were explained in total of 60.417% by 40.140% of Cause 1, 13.721% of Cause 2, and Cause 3 for 6.556% If radiation safety regulation standards are drawn using the radiation safety regulation measurement tool, which is suggested in this study, this could be not only comply with international standards but also could be used to propose a practical standard to domestic radiation safety managers.

A Research on the Life Span extension of Die Block in Cold Forging Die (냉간단조금형에서 다이블록의 수명연장에 관한 연구)

  • Kim, Sei-Hwan;Choi, Kye-Kwang
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.9 no.2
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    • pp.281-285
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    • 2008
  • Die hobbing is one of the dieblock manufacturing methods of cold forging die, which makes the upper side of dieblock indented using master punch, hobb to produce impression not using cutting work. SKD11, alloy tool steel was used as the material of dieblock and stainless sheet metal was used as product material in cold forging work. The life span of the die was 6,000 strokes. In this research, the material of dieblock was changed into SKH51, the high speed tool steel and the product material was S45C, the carbon steel in the cold forging work. The life span of the die was 21,000 strokes, which is 350% of the life span of the die using the former method.

The Development of Tool Position Tracking system Based on UWB for Automotive Assembly Process (자동차 조립공정 작업의 실시간 모니터링을 위한 UWB 기반 공구위치 추적 시스템 개발)

  • Jeong, Seung-Hyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.8
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    • pp.657-661
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    • 2019
  • The automobile industry is representative industry of complex characteristics, which employing 10 million people, the largest manufacturing industry over $1 trillion in sales and assembling with 20,000 parts to make complete automobile and automobile assembly processes have a lower automation rate than other processes, which is labor intensive processes of assembling to painted body with 3,000 components such as seats, built-in, instrument panel, glass, engine, transmission units. However, the current assembly process does not have real-time monitoring. If a tool position tracking system is adapted to assembly process for directing consistent work order and checking for missing work, the productivity and quality improvement of the assembly process can be achieved by preemptively preventing possible defects in the assembly process. So, this paper aims to develop a Tool Position tracking system using UWB(Ultra Wide Band) with trilateration and proves their effectiveness for real-time monitoring of automotive assembly process.

Evaluation on Tensile Characteristics of Extruded Aluminum Panel Joints by Friction Stir Welding Parameters (마찰교반 용접변수에 따른 알루미늄 압출판재의 인장특성 평가)

  • Lim, Byung-Chul;Kim, Young-Moon;Kim, Won-Seop;Park, Sang-Heup
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.3
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    • pp.614-618
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    • 2018
  • The changes in the mechanical properties according to the width of the tool shoulder, rotation speed and moving speed in friction stir welding (FSW) are evaluated using Al 6061-T6. The results indicated that the tensile strength value increases with increasing rotation speed. The higher the moving speed of the tool shoulder, the lower the tensile strength, regardless of the tool type. A higher tensile strength value was generally obtained with a tool shoulder diameter of 12mm (TSD12) than with 8mm. When the moving and rotation speeds exceed a limiting value, a stabilization stage is reached, in which (the tool shoulder diameter?) no longer affects the material properties. At a tool shoulder diameter of 8mm (TSD8), the material properties are decreased and the mixture of material in the welding area is incomplete in comparison with the tool type of TSD12. The tensile strength value is decreased at a rotation speed of 1500 rpm. As a result, a rotation speed higher than the threshold value is needed in order for and the transition temperature to be reached, which allows the complete mixing of the material in the welding area.

Evaluation of incremental sheet forming characteristics for 3D-structured aluminum sheet - part 2 (3D 구조 알루미늄 판재의 점진판재성형 특성 평가 (제2보))

  • Kim, Young-Suk;Do, Van-Cuong;Ahn, Dae-Chul
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.3
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    • pp.1585-1593
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    • 2015
  • 3D-structured (embossed) aluminum sheets have been used in the heat insulation purpose for automative exhaust parts because of increasing their surface areas and stiffness reinforcement imposed in making the embossing pattern. However, there are many restrictions in press forming of the embossed sheet compared with the flat sheet (non-embossed one) because of its difference in the mechanical properties and the geometrical 3-dimensional shape. In this paper we investigated the deformation characteristic of embossed aluminum sheet in the incremental sheet forming process which has frequently used in the design verification and the trial manufacturing of sheet products. The single point incremental forming (SPIF) experiments for the rectangular cone forming using the CNC machine with a chemical wood-machined die and a circular tool shape showed that the formability of the embossed sheet are better than that of the flat sheet in view of the maximum angle of cone forming. This comes from the fact that the embossed sheet between the tool and the elastic die wall is plastically compressed and the flatted area contributes to increase the plastic deformation. Also the tool path along the outward movement from the center showed a better formability than that of the inward movement from the edge. However the surface quality for the tool path along the outward movement evaluated from the surface deflection is inferior than that of the tool path along the inward movement.

Characteristics of Dissimilar Materials Al alloy(A6005)-Mg alloy(AZ61) Under Friction Stir Welding for Railway Vehicle (철도차량 적용을 위한 Al alloy(A6005)-Mg alloy(AZ61) 이종소재 마찰교반용접 특성 연구)

  • Lee, Woo-Geun;Kim, Jung-Seok;Sun, Seung-Ju;Lim, Jae-Yong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.8
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    • pp.706-713
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    • 2016
  • In this study, the welding characteristics of friction stir welding were investigated in accordance with the tool plunge position and cooling to the base materials for the joining of dissimilar materials (A6005-AZ61). Other different welding conditions, such as the tool rotation speed and welding speed, were fixed to 500rpm-30mm/min, respectively, and welding was then carried out by placing the Mg alloy (AZ61) on the advancing side and Al alloy(A6005) on the retreating side. Welding was conducted under six different conditions. To investigate the welding characteristic, tensile test and microstructure observations using an optical microscope were carried out. As the tensile test result, the maximum strength appeared under the condition in which the tool is moved 1 mm to the Mg alloy direction and cooling to the base materials. Under the same welding conditions, the strength with cooling was approximately two times higher than that without cooling. The tool was located in each direction of 1.7 mm from the weld line. Therefore, in the excessive off-set of tool position, the welding integrity was in an extremely poor condition due to the lack of stirring. This study was confirmed by the A6005-AZ61 dissimilar friction stir welding the welding speed and the tool rotation speed. In addition, the temperature control and tool plunge position are important welding parameters.

Study on Temperature Characteristics of Friction Stir Welding Process by Numerical Analysis (수치해석을 활용한 마찰교반용접 공정의 온도 특성 분석 연구)

  • Kim, Moosun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.12
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    • pp.513-518
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    • 2019
  • Friction Stir Welding is a welding technique for metal materials that utilizes the heat generated by friction between the material to be welded and the welding tool that rotates at high speed. In this study, a numerical analysis method was used to analyze the change in the internal temperature of the welded material during friction stir welding. As the welding target material, AZ31 magnesium alloy was applied and the welding phenomenon was considered a flow characteristic, in which a melting-pool was formed. FLUENT was used as the numerical tool to perform the flow analysis. For flow analysis of the welding process, the welding material was assumed to be a high viscosity Newtonian fluid, and the boundary condition of the welding tool and the material was considered to be the condition that friction and slippage occur simultaneously. Analyses were carried out for various rotational speeds and the translational moving speed of the welding tool as variables. The analysis results showed that the higher the rotational speed of the welding tool and the slower the welding tool movement speed, the higher the maximum temperature in the material increases. Moreover, the difference in the rotational speed of the welding tool has a greater effect on the temperature change.

A Design and Development of Multi Air gun for suction and shooting a jet of compressed air (압축공기의 흡입과 분사를 위한 멀티 에어건의 설계 개발)

  • Jeong, Seok-Min;Jang, Sung-Min
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.11
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    • pp.4944-4949
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    • 2012
  • The purpose of this paper is concerned with a development of air gun for use at work. A air gun is the tool to remove of cutting fluid and workpiece chip in industrial field used machine tool. And it generally is used to shoot a jet of compressed air. Worker must prepare respectively air gun for suction and shooting a jet of compressed air. Therefore we has developed new air gun. In this paper we research for design and analysis of it. The air gun is composed of body, pipe, opening and shutting unit, turning unit, air tube and elements for fabrication. The developed air gun is experimented to confirm the efficiency.

Study on the Characteristics of Electron Beam Dependent with the Structure of Wiggler in the Miniaturized Free Electron Laser Module (초소형 자유전자레이저 모듈에 있어서 위글러 구조에 따른 전자빔 특성 연구)

  • Kim, Young-Chul;Ahn, Seong-Joon;Kim, Dae-Wook;Kim, Ho-Seob;Ahn, Seung-Joon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.3
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    • pp.1319-1326
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    • 2011
  • We have investigated the characteristics of the electron beam (e-beam) in the miniaturized free electron laser module by using the commercial 3D simulation tool OPERA. The e-beam was made parallel before entering the slit-type wiggler by the negative bias applied to the central electrode of the electron lens. With respect to the different structures of the wiggler, we obtained the inner distributions of the electrical potential and the electric field, which was, in turn, used to calculate the trajectory of the e-beam in the wiggler.

Development of A Software Tool for Supporting Metal Mold Design Based on The Pro/E CAD System (프로엔지니어(Pro/E) 기반 금형설계 지원 소프트웨어 툴 개발)

  • You, Ho-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.3
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    • pp.1014-1020
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    • 2012
  • This paper focuses on the development of a supporting S/W tool that can minimize designer's manual operations and errors in metal mold design based on a 3D solid model. The scope in this work includes the offset surface modeling, the computation of the padding force, the generation of material table, the decision of hole position, the estimation of the size of raw material, which are the essential parts of press die and mold design in automotive industry. The proposed system has been developed as a plug-in type using Pro/E API and Visual C++ in order to put the system into the menu functions of Pro/E which is one major 3D CAD systems in the manufacturing industry.