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한국기계기술학회 학술대회논문집 [Proceedings of KSMT Annual Meeting]

간행물 정보
  • 자료유형
    학술대회
  • 발행기관
    한국기계기술학회 [Korean Society of Mechanical Technology]
  • 간기
    반년간
  • 수록기간
    2000~2018
  • 주제분류
    공학 > 기계공학
  • 십진분류
    KDC 550 DDC 621
2017년도 한국기계기술학회 춘계학술발표회 논문집 (23건)
No
2

CRDI 디젤 엔진의 솔레노이드 인젝터 파형 분석에 관한 실험적 연구

강성구, 이영호, 유종식, 이원섭, 김철수

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.9-12

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This paper investigates the waveform analysis of voltage and current waveform from CRDI engine. It is on developing on analysis method of waveform CRDI Diesel engine. The experimental methods using Pico oscilloscope are employed to measure current and voltage waveform of solenoid injector from CRDI engine. The one normal and two abnormal solenoid injectors are used. The experiment is carried out during no-load condition. A summary of the important results are as follows. 1) The area of the voltage and current waveform of the abnormal injector becomes larger than the that of normal injector. 2) The area of the current waveform can be obtained more accurate results than that of voltage waveform.

4,000원

3

과열도 감소를 위한 압축기 내부 유동 최적화에 관한 연구

황일선, 이영림

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.13-14

※ 원문제공기관과의 협약에 따라 개인회원에게 무료로 제공됩니다.

The increase of the superheat is one of several factors adversely affecting the efficiency of the refrigeration cycle. To this end, it is important to release the heat inside the compressor. Therefore, in this paper, we have increased the convective heat transfer coefficient inside the compressor by utilizing the vibration of the moving part of the compressor. The results show that reducing the gap between the shell and the moving part increases the flow velocity in the gap resulting in the increase of convective heat transfer coefficient.

4

A Study on Application Characteristics of Canola Oil Biodiesel Fuel in a CRDI Turbocharged Diesel Engine

Jun-Cong Ge, Nag-Jung Choi

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.15-19

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전통적인 화석 에너지 자원의 고갈과 환경오염 악화 등의 관점에서 볼 때 에너지 절약 및 배출가스의 저감은 동시에 해결해야 되는 문제로 대두되고 있다. 바이오연료는 대체연료의 하나로서 이러한 문제들을 효과적으로 해소할 수 있는 대안으로 떠오르고 있다. 따라서 본 연구에서는 커먼레일 터보과급디젤기관에 서 카놀라유 바이오디젤연료의 적용효과를 알아보기 위하여 실험적으로 고찰하였다. 실험에 사용된 연료 는 ULSD(초저황 디젤유), BD20(체적비로 20%인 카놀라유와 80% 디젤유 혼합) 및 PCO(순수한 카놀라 유)를 사용하였다. 카놀라유 바이오디젤연료의 혼합율이 증가함에 따라 입자상물질(PM)과 일산화탄소 (CO)는 크게 감소하였으며, 질소산화물(NOx)은 약간 증가하는 현상을 보였다.
With depletion of conventional fossil energy resources and increased pollution, energy-saving and emission reduction problems have to be solved. Biofuels are alternative fuels that can effectively reduce these problems. Therefore, in this study, the application characteristics of canola oil biodiesel in a CRDI Turbocharged Diesel Engine was experimentally investigated. The test fuels were denoted as ULSD (ultra low sulfur diesel), BD20 (20% canola oil blended with 80% ULSD by volume), and PCO (pure canola oil), respectively. By using canola oil biodiesel, the particulate matter (PM) and carbon monoxide (CO) emissions were considerably reduced with increased BMEP. The nitrogen oxide (NOx) emissions increased only slightly due to the inherent presence of oxygen in biodiesel.

4,000원

5

과열도 예측을 위한 냉동 압축기 비정상 내부유동 CFD 해석

박상준, 이영림

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.20-21

※ 원문제공기관과의 협약에 따라 개인회원에게 무료로 제공됩니다.

The refrigerant temperature of a compressor increases due to heat generated in the discharge chamber and the motor. The increase of the suction temperature raises the superheat resulting in EER reduction. Thus, accurate superheat prediction is needed for the design of an efficient compressor. In this paper, the unsteady flow analysis is performed using CFD to predict the superheat. The results show that the suction temperature increases by about 26 °C which agrees well with the experiments.

6

K-ε 난류모델이 배터리냉각 시스템 성능해석에 미치는 영향

정석훈, 서현규

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.22-25

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This paper aims to reveal the effects of the K-ε turbulence model on the performance analysis of battery cooling system for electric vehicle. The maximum temperature, the difference of temperature, and temperature distributions on the battery module were compared with and without K- ε turbulence model under the different flow rate. It was found that there was no need to apply K-ε turbulence model when the flow rate is over 500m3/h because the difference of maximum temperature is under the 6℃.

4,000원

7

GOTHIC을 이용한 신형원전 열수력분석

유일용

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.26-28

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The Auxiliary Building Controlled Area Emergency Exhaust Air Cleaning Units (ACU) should be taken into account in the accident analysis that the entire gaseous radioactive material is exhausted to the environment through the auxiliary building without any filtration until the pressure reaches a negative pressure, approximately -0.25 inch, water gauge, when the ACU operation is credited in the analysis. Thus, this paper performed thermal-hydraulic analysis using GOTHIC program and showed the exhaust flow from each room in the auxiliary building controlled area to maintain room pressure not greater than (-) 0.25 inch water gauge.

3,000원

8

연소실 카본 퇴적물 클리닝에 의한 성능 향상 연구

나완용

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.29-33

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In recent years, the regulation of exhaust gas of automobiles has been strengthened, and various high-tech technologies have been applied to cope with exhaust gas regulations. Especially, in case of gasoline vehicles, by injecting gasoline direct injection, a large amount of carbon deposits are adsorbed in intake / exhaust valves and combustion chambers, Which is a cause of combustion. Therefore, in this study, we developed the cleaning liquid and related special tools to remove carbon deposits in the combustion chamber, and developed the cleaning process of the combustion chamber and tried to understand the effect on the engine performance improvement. In order to prevent the release of heavy metals after burning, the cleaning effect of the cleaning liquid was investigated by temperature and the influence of the knocking of the engine on the cleaning performance.

4,000원

9

간접분사식 디젤기관에서 바이오디젤유 적용시 연료분사시기 변화의 영향

최승훈

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.34-39

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Biodiesel fuel (BDF) can be effectively used as an alternative fuel in diesel engines. The BDF, however, may affect performance and exhaust emissions of the diesel engine because it's physical and chemical properties are different with from the diesel fuel such as viscosity, compressibility and so on. To investigate an effect of injection timing on characteristics of performance and exhaust emissions with the BDF in an IDI diesel engine, this research applied the BDF derived from soybean oil in this study. The engine was operated with six different injection timings from TDC to BTDC 12 ˚CA and six different loads at the engine speed of 1500 and 2000 rpm. In less then the BDF 20, it showed the similar trend compare to the diesel fuel. But, the best injection timing was 2˚ CA retarded compare to the diesel fuel with BDF 50.

4,000원

10

유압 베인 펌프의 캐비테이션에 관한 연구

조인성

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.40-43

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A hydraulic system is a drive or transmission system that uses high pressure hydraulic fluid to power hydraulic machinery. It refers to the transfer of energy from flow and pressure. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy. Cavitation is the formation of vapor cavities in a liquid that are the consequence of forces acting upon the liquid. It usually occurs when a liquid is subjected to rapid changes of pressure that cause the formation of cavities where the pressure is relatively low. In this study, a cavitation was measured when the vane pump is rotating. The rotation speed of the vane pump was tested at 1000 rpm to 5000 rpm. At that time, the temperature and pressure of each hydraulic oil were changed and controlled. The results show that flow rate and noise are changed when cavitation occurred.

4,000원

11

선박 추진축계의 수리공정 개선에 관한 연구

김진구, 조대환

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.44-45

※ 원문제공기관과의 협약에 따라 개인회원에게 무료로 제공됩니다.

기관손상사고에 따른 수리작업 이후 동일한 원인으로 재발하는 경우에 대해 선박의 추진축계의수리 공정에 대해 고찰하였다. 그 결과 line boring machine 개선이 필요하며 Kit process 적용으로 엔진 수명 연장이 가능한 것으로 분석되었다.

12

디젤기관에서 BDF와 함산소제 및 EGR의 적용 연구

최승훈

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.46-51

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In this study, the possibility of biodiesel fuel and oxygenated fuel(dimethoxy methane, DMM) was investigated as an alternative fuel for a naturally aspirated direct injection diesel engine. The smoke emission of blending fuel (diesel fuel 90vol-% + DMM 10vol-%) was reduced approximately 70% at 2500rpm, full load in comparison with the diesel fuel. But, engine power and brake specific energy consumption showed no significant differences. But, NOx emission of biodiesel fuel and DMM blended fuel increased compared with commercial diesel fuel due to the oxygen component in the fuel. It was needed a NOx reduction counter plan that EGR method was used as a countermeasure for NOx reduction. It was found that simultaneous reduction of smoke and NOx emission was achieved with diesel fuel (95 vol-%) and DMM (5 vol-%) blended fuel and cooled EGR method (15%).

4,000원

13

클래드 재료에 대한 열전도도 측정

원대희, 박영상

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.52-54

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In this study, cladding materials were prepared by explosion pressure welding of materials with different thermal conductivity to fabricate heating block for 3D printing. The following conclusions were obtained as a result of measuring the thermal conductivity of the clad material. Experimental results show that the lowest thermal conductivity of aluminum and titanium is 116.3 ± 0.4 W / mK.

3,000원

14

선창세정기의 압력변화에 따른 분무특성에 관한 연구

이철재, 조대환

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.55-56

※ 원문제공기관과의 협약에 따라 개인회원에게 무료로 제공됩니다.

선창은 선박의 화물을 싣는 공간으로 구조적 문제로 인해 세정작업은 위험성이 크고 작업 난이도가 높은 작업이다. 이 연구에서는 전용 선창세정기의 설계 자료로 활용하기 위해 압력변화에 따른 분무특성 을 고찰한 결과 노즐 형상의 최적화를 위한 변수 요소를 확인 하였다.

15

Class 1 등급 1600 ℃ 광대역 열전대 온도 측정 장치[1]

이정익

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.57-60

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This study is a development of measuring instrument capable of measuring the temperature measurement at a temperature of between 0 ℃ and 1600 ℃ at a high temperature of the high temperature. This development technique develops a measuring device capable of measuring two different temperature measurements by combining two different temperature measurements ranging from one measurement module to the hot temperature to the high temperature. Also, it develops in a vacuum or high pressure state.

4,000원

16

CFRP 가공 시 공구형상 변화에 따른 드릴마모에 관한 연구

노양호, 오성훈

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.61-64

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Carbon fiber reinforced plastics are typical examples of carbon fiber, which retain high strength and high strength at high temperatures. Also, it is applied to various fields, such as the structure of the aircraft, automobile, and the core industries. CFRP machining methods include machining tools such as cutting machining and laser machining. In this thesis, a tool dynamometer and tool microscope were used to measure the cutting characteristics of various cutting conditions and tool wear and tool wear. As a result, the cutting force of the new shape drill (lower shape drill) was measured higher than other tools, the amount of tool wear was the lowest, and it was found that a good machined surface was obtained.

4,000원

17

소형 특장차량 보조축의 구조특성에 관한 연구

최동혁, 유영상, 이상호

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.65-68

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Numerical analysis has been carried out to investigate the structural characteristics of auxiliary shaft system in a compact special vehicle. Stress and deformation distributions with safe factor in the auxiliary axle system are compared. It can be seen that maximum stress happens near the local axle position and deformation at the air spring is also predicted. The results from this study could be applicable for optimal design of variable shaft system in the compact special vehicle.

4,000원

18

소음 및 손끼임을 방지하는 플랩식 가구댐퍼 모듈 셋 개발 [2]

이정익

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.69-73

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This study began the studies to develop a general-purpose expression furniture flap damper module set to prevent that noise and caught in through as a result, to obtain the following results using the same study procedure. First, to develop a damper bracket and hardware. Second, we want to create the design drawings for the furniture flap type damper module three. Third, we want to create a mock-up sample and mold in progress. Fourth, the tester will be designed and manufactured to produce a universal formula Furniture flap dampers module. Fifth, to conduct a test for the successful production of furniture damper module set. Study the sixth oil impregnation technology and to develop a general-purpose expression furniture damper flap. Finally, the set of all of the modules are to the development of molds followed successfully.

4,000원

19

유압프레스에 장착되는 펀치의 변수에 따른 연구

김경환, 이동환

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.74-78

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A press which has a 20 percent share in machine tools is one of the production facilities. Recently hydraulic press is used to reinforce competitiveness of the manufacturing industry. The press by using metal powder makes products without additional process while conventional processing machine makes products after removing unnecessary parts. In this way, large quantity of products can be produced in a short time. Researches to manufacture products by the press have been proceeding after 1970. In this study, structure and displacement analysis for shape parameters for punch used as the component for hydraulic press was investigated and structural stability was identified based on the results.

4,000원

20

PSO를 이용한 풍력발전 블레이드의 공기역학적 최적설계

리껀, 박명성, 김영철, 백태현

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.79-83

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The object of research in Based on 1.5MW wind turbine blade. This paper has carried out the aerodynamic shape optimization design of wind turbine blade. Based on the aerodynamic basic theory of wind turbine blade design and combined with particle swarm optimization algorithm, the design optimization model of the aerodynamic shape of blade is established. The calculation programs are written by use of MATLAB and calculate chord length and torsion angle of the blade. Then the shape of wind turbine blade is obtained. As research we can know that the chord length is decreased after optimization design of wind turbine blade, The optimized blade not only meets the actual manufacturing requirement, but also has the largest wind energy utilization coefficient.

4,000원

21

수직 보강재와 개구부 형상에 따른 풍력 타워의 응력해석

박상현, 박명성, 김영철, 백태현

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.84-87

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As the size of the wind power becomes larger, the development of the assembly type wind power which is advantageous in transportation and installation is active. This advantage comes from the economic point of view, and the stiffener is applied to the inner side, so that the safety is high. Large wind power require door openings for maintenance. The door opening has an irregular cross-section, and an excessive stress active due to the door opening. In this paper, the stresses occurring around the door opening was analyzed. As a result, small stress values were appeared in the tower, as the number of stiffeners were increased. Also, stress values were decreased a little in the tower as the opening shape become to ellipse was closer.

4,000원

22

탄성도로용 방진재 설계 : 동적탄성계수

김병삼, 김형두, 최홍철

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.88-92

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In contemporary society, vibration and noise in the road nearby buildings have become social problems as vehicles operation has increased. Especially, in the case of the building used to art performance, available suitability of the building is tested by the indoor noise class. Therefore, the purpose of this paper is the measurement of the structure-borne noise of Seoul Art Center nearby Umyeonsan tunnel and analyzing the effects of countermeasure to it. To measure the effects of countermeasure, not only structure-borne noise is measured, but also the vibration is measured, before and after the construction of pavement using pad and porous asphalt. Consequently, the sound pressure level in art center 1st floor is reduced after mat pavement method, structure-borne noise that was high in 25Hz wide-band before pavement decreased regardless of experimental vehicle's velocity. Using porous asphalt pavement the noise was reduced about 3 dB(A).

4,000원

23

돌그릇 자동 가공기계 개발

정석훈

한국기계기술학회 한국기계기술학회 학술대회논문집 2017년도 한국기계기술학회 춘계학술발표회 논문집 2017.04 pp.93-96

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돌그릇 제품은 특성상 강도가 있으면서도 무겁고 취약하여 가공이 매우 어렵고, 작업환경의 열악, 작업 공간과 작업능률의 비효율성 등의 단점이 있다. 본 연구개발을 통해 각기 다른 2대의 가공기계에서 2공정 에 의해 2명이 작업하던 돌솥 본체가공을 1인에 의해 1대의 기계에서 2공정의 작업을 거쳐 가공을 완료 할 수 있도록 하였으며, 작업공간의 효율적 배치와 작업자의 환경 및 안전을 고려한 자동 돌솥 본체 가공 전용 기계를 개발하였다.

4,000원

 
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