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한국기계기술학회지 [Journal of the Korean Society of Mechanical Technology]

간행물 정보
  • 자료유형
    학술지
  • 발행기관
    한국기계기술학회 [Korean Society of Mechanical Technology]
  • ISSN
    1229-604X
  • EISSN
    2508-3805
  • 간기
    격월간
  • 수록기간
    1999~2019
  • 등재여부
    KCI 등재
  • 주제분류
    공학 > 기계공학
  • 십진분류
    KDC 550 DDC 621
제9권 제3호 (12건)
No
1

스쿠터 무단변속기 구동풀리의 개선된 설계

함성훈

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.1-6

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The scooter CVT is consisted of driving pulley, rubber V-belt and driven pulley. A driving pulley of CVT plays a vital role. In this study, contact forces of movable flange, roller and ramp plate are analyzed for wear of roller. As the results, 1) when incline angle of ramp plate become decreased, reaction difference of ramp plate and movable flange become increased, so roller wear can be decreased, 2) when radius of movable flange profile is increased, reaction difference become increased also. Roller wear had been caused serious claim. Based on the analysis, advanced model of driving pulley is presented.

4,000원

2

메모리 소자에서 전압발생기의 펌핑 커패시터 제안에 관한연구

조명현, 이명언

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.7-13

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In semiconductor memory, the kinds of voltage generator are high voltage generator, negative voltage generator, drain voltage generator and etc. The relevant circuits supported voltage generator, are clock generator, sense amplifier, voltage regulator and etc. The voltage generator consists of MOS diodes and MOS capacitors. To get the out voltage with sufficient charge, the MOS capacitors are big size. These MOS transistors can be adapted only on the EEPROM process. Thus, in this paper, we designed stacked metal capacitor. This capacitor is small size but can get much capacitance. This capacitor is designed to comb type using metal-line and poly-line. The size of designed capacitor is 208×52㎛2 and the capacitance is about 4㎊. The stacked metal capacitor can get much capacitance of 5~6 times than single plane capacitor. Also this capacitor will be easy adapted in sub-micro process technology of semiconductor memory. And this capacitor can be adapted on all memory process.

4,000원

3

교량외관조사용 탐사로봇 개발 (I)

양경택, 김시찬

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.15-21

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The increase of traffic over a bridge has been emerged as one of the most severe problems in view of bridge maintenance, since the load effect caused by the vehicle passage over the bridge has brought out a long-term damage to bridge structure, and it is nearly impossible to maintain operational serviceability of bridge to user's satisfactory level without any concern on bridge maintenance at the phase of completion. This study has the aim of development on automated inspection system to lower surface of bridge superstructures to replace the conventional system of bridge inspection with the naked eye, where the monitoring staff is directly on board to refractive or other type of maintenance vehicles, with which it is expected that we can solve the problems essentially where the results of inspection are varied to change with subjective manner from monitoring staff, increase stabilities in safety during the inspection, and make contribution to construct data base by providing objective and quantitative data and materials through image processing method over data captured by cameras. By this system it is also expected that objective estimation over the right time of maintenance and reinforcement work will lead enormous decrease in maintenance cost.

4,000원

4

에어믹서가 설치된 공조기 혼합실 내의 온도분포에 관한 수치해석적 연구

장영근, 최성식, 서병택

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.23-28

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A study of temperature profiles in mixing zone of AHU(air handling unit) can contribute greatly to enhance performance of AHU system, so the study on the temperature distribution between RA(return air) and OA(outdoor air) is important to analyze the mixing characteristics in a mixing zone of AHU. Accordingly, the temperature profiles during RA(return air) and OA(outdoor air) supply process into mixing zone of AHU with an air mixer are studied numerically. The effect of air mixer, OA temperature and RA/OA flow rate are studied in detail. In this study, the results show that the mixing effect is all high for installed the air mixer. The more OA flow rate decrease, the more mixing effect is high.

4,000원

5

상태․공간 방식에 의한 항공기 가로 및 방향 동특성 해석

윤선주

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.29-36

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State-space method for the analysis of the dynamic characteristics of a body motion is set up as mathematical tool for the solution of differential equation by computer. Representation of a system is described as a simple form of matrix calculation and unique form of model is available for the linear or nonlinear, time variant or time invariant, mono variable or multi variable system etc. For the analysis of state-space method a complicated vector calculation is required, but this analysis can be simplified with the specific functions of a software package. Recently as the Graphical User Interface softwares are well-developed, then it is very simplified to execute the simulation of the dynamic characteristics for the state-space model with the interactive graphics treatment. The purpose of this study is to develope the simulator for the analysis of the lateral and directional dynamic characteristics of an aircraft that is primarily to execute the simulation for the analysis of the transient response of an aircraft lateral and directional stability.

4,000원

6

역산열전도법을 이용한 다중 열물성 측정법에 관한 연구

임동주

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.37-45

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By Multiple-measurement method using Inverse Heat Conduction Method and parameter estimation method, thermo physical properties were measured, and its estimation accuracies were compared with other reference data. Values of the thermophysical properties determined from the measurement method are in the range of data reported in the literature. From the above, it should be pointed out that the inverse algorithm and multiple measurement method is particularly simple to code and can be run on the personal computer used for the data acquisition. Especially, the inverse algorithm for a heat flux determination can be practically used in every case where the surface measurement are not accessible and where it is impossible to correctly place some sensors with the body. It is found that the measurement method is more practical, convenient and time-saving than other steady-state methods.

4,000원

7

가속수명시험용 플랫폼 특성에 관한 연구

나종윤, 장용훈, 박형배

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.47-52

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Recently, there are many researches that are performed for increasing reliability about product life cycle using ALT(Accelerated Life Test), AST(Accelerated Stress Test) and ASA(Accelerated Stress Audit) in the industry. The test of this research needs a device that has wide-band frequency vibration. But most test devices such as HALT only show the good response of high frequency area. In this research, the platform of ALT was developed based on Stewart Platform using pneumatic Actuators. Pneumatic Actuators represent response of wide-band frequency by motion and mpact. Cylinders of Stewart Platform is operated based on frequency and pressure. This research shows system characteristic of Platform to develop the control algorithm of accelerated life test platform in future research.

4,000원

8

하나로 핵연료시험설비의 대형냉각수상실 사고 시 핵연료 피복재

박수기, 지대영, 박국남, 안성호

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.53-58

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The nuclear fuel cladding temperatures of the HANARO fuel test loop have been calculated by MARS code for the large break loss-of-coolant accidents. Conservative method was used for the analysis of the loss-of-coolant accidents. Consequently, the maximum peak cladding temperature was predicted as 1235K, which was lower than the design limit temperature (1477K) of nuclear fuels for the HANARO fuel test loop. This means that the cooling capability of the emergency cooling water system for the HANARO fuel test loop is sufficient for the large break loss-of-coolant accidents.

4,000원

9

핵연료 조사시험용 압력용기의 제작

박국남, 이종민, 심봉식, 안성호, 유성연

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.59-64

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The Fuel Test Loop(FTL) which is capable of an irradiation testing under a similar operating condition to those of PWR(Pressurized Water Reactor) and CANDU(CANadian Deuterium Uranium reactor) nuclear power plants has been developed and installed in HANARO, KAERI(Korea Atomic Energy Research Institute). It is consisted of In-Pile Section(IPS) and Out-of Pile System(OPS). The IPS which is localed inside the pool is divided into 3-parts; they are in-pool pipes, IVA(IPS Vessel Assembly) and the support structures. The test fuel is loaded inside a double wall, inner pressure vessel and outer pressure vessel, to keep the functionality of the reactor collant pressure boundary. The localization of the IVA is achieved by manufacturing through local company and the functional test and verification were done through pressure drop, vibration, hydraulic and leakage tests. The brazing technique of the instrument lines has been checked for its functionality and yield. A IVA has been manufactured by local technique and will be finally tested under out of the high temperature and high pressure test.

4,000원

10

Slim hole 환형관내에서 굴착유체의 유동특성에 관한 연구

서병택, 장영근

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.65-70

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The paper concerns an experimental and numerical study of fully developed laminar flow of a Newtonian, water and non-Newtonian fluids, 0.2% aqueous of sodium carboxymethyl cellulose(CMC) solution in concentric and eccentric annuli with combined bulk axial flow and inner cylinder rotation. Pressure losses and skin friction coefficients have been measured when the inner cylinder rotates at the speed of 0~300 rpm. The influences of rotation, radius ratio and working fluid on the annular flow field are investigated.

4,000원

11

CASS기기의 열취화 건전성 평가

윤은섭, 신혜영, 박영섭

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.71-77

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CASS(Cast Austenitic Stainless Steel) materials are used in pressure-boundary components, such as piping and pump casing in power plant. When CASS components are exposed to high temperature (i.e. over 280oC) for a long time, thermal embrittlement could occur. Thermal embrittlement susceptibility of pipings and pump casings are determined by calculate the ferrite contents and fracture toughness. For some piping components, ferrite contents exceed the criterion value, are potentially susceptible to thermal embrittlement. But fracture toughness value is high enough to satisfy susceptibility criterion for all CASS components. Also flaw tolerance evaluation is assessed to piping and pump casing. As a result, there were no significant thermal embrittlement risk on CASS components.

4,000원

12

밀폐형 압축기 축계 동역학 설계 프로그램 개발

이진갑

한국기계기술학회 한국기계기술학회지 제9권 제3호 2007.09 pp.79-86

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Simulation program for the analysis of compressor shaft is developed. The program cover dynamic analysis, oil supply analysis, and bearing analysis. Each of the analysis modules is integrated in object oriented way. Behavior of shaft is measured and compared with the analysis results. Through the analysis and experiment, it is shown that the simulation predicts the experimental results very well. The integrated simulation program is applied to design of compressor shaft, and shows that the compressor shaft system can be designed fast and conveniently.

4,000원

 
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