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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
제15권 제2호 (25건)
No

〈학술연구〉

1

현미경을 이용한 베어링 쇠구슬 표면 거칠기 측정 시스템 개발

김정현

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.149-153

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Measurement of surface roughness is an important metrology procedure widely used in the industry during the final phases of the manufacturing process for quality control. This paper presents a measurement system that uses an optical microscope equipped with a vision sensor to measure the surface roughness of bearings. Shape from Focus / Defocus method is applied to measure the 3D surface coordinates of the object surface from which roughness calculations can be undertaken.

4,000원

2

마이크 어레이를 사용하여 소음의 위치를 결정

김정현

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.155-159

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This paper presents the detection and diagnosis of air-conditioner electromagnetic sound through noise measurements. Electromagnetic sound originating from the motor is an unpleasant source of unwanted noise that should be detected at the manufacturing stage. A detection system using sound measurements was built and a detection algorithm based on FFT analysis is presented. Sound measurements are preferable over direct vibration measurement because it is non-contact and low cost. Experimental results show that our sound measurement system can detect electromagnetic sound effectively compared to using vibration measurements.

4,000원

3

차량용 전자식 솔레노이드 구조의 진동 특성 평가 및 검증

김병준, 조행묵

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.161-165

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In this paper, the vibrational characteristic of electronic solenoid structure for vehicle is analyzed by using ADAMS as commercial multi-body dynamics analysis program. This study model is made with CATIA V5R18 as 3D computer-aided design program and analyzed with rigid body mode in ADAMS. To fulfill the vibration analysis, the result value of solenoid structure is suggested.

4,000원

〈학술연구>

4

가변 용량형 압축기 ECV 내부의 유동특성에 관한 수치해석 연구

김대영, 조행묵

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.167-172

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In this paper, the current of ECV block is connected to compressor crankcase on which the Pc port of Ps port Euro is formed(Type-1). Pc Port Internal Bellows are supposed to be affected by changes at the flow of refrigerant to the solenoid valve inside inhalation. There is Ps port at the direction of flow characteristic in predicting and analyzing. At suction pressures of 0.2MPa and 1.5MPa, maximum flow rates become 46m/s and 129m/s respectively. The refrigerant is discharged by compressor rotation around the axis of rotation from the inflow of port(Pd)(Type-2). By predicting and analyzing inlet flow, suction pressures become 2.7MPa and 3.6 MPa when maximum flow rates of 177.5m/s and 205m/s are affected on Pc ports of Euros with pressures of 1.2KPa and 3.8KPa respectively. This study result can be applied as the basic data for design of ECV.

4,000원

〈학술연구〉

5

하이브리드 자동차 배터리의 구조 변화에 대한 강제 열전달 특성

이동렬

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.173-178

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In this research, the flow and forced convective heat transfer analysis of HEV battery pack were investigated numerically regarding the different shapes of the inlet, outlet, and battery case. The velocity ,pressure, and temperature distribution of the fluid at the inlet part of the battery module were numerically calculated for the optimum design of the battery pack for three different inlet shapes of the battery module. In addition, the local battery temperature for height and width and convective heat transfer coefficient of the air inside the battery pack were numerically obtained. Ultimately, the circle shape of the inlet and outlet were determined for the energy-effective shape of the battery pack.

4,000원

6

개량 훈(塤)에 대한 음향학적 특성 고찰

장은렬, 이태연, 신준

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.179-184

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‘Hoon’ is a traditional musical instrument known to be coming into our country in King Yejong of Koryo Dynasty. Because of the structural problem, the traditional Hoon has a limited musical range. Nowadays Hoon is played only in Confucian ritual music among Korean traditional music. Our research team have developed the improved Hoon which retains the sound of the traditional Hoon, as we can play western music as well as traditional music by this instrument. This new instrument has been tested with the traditional Hoon and Ocarina, and very promising experimental results have been obtained. The pitch of the sound of Hoon is well suited to harmonic scale, and the range of sound has been expanded while retaining timbre compared to that of the traditional Hoon.

4,000원

7

저속충돌시 국내외 승용차의 손상성과 수리성에 대한 연구

조휘창, 박인송

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.185-190

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Recently imported vehicles are increasing rapidly and related vehicle accidents have also increased. In addition, the number of accident in 2010 was approximately 205,000 cases, about 6,000 billion to repair the vehicle accident was paid. RCAR low-speed crash tests to calculate the imported car insurance repairs, domestic cars and imported car repairs were compared. Average repair cost 2,920,000 won in domestic cars and imported cars are 14,570,000 won, imported cars were approximately five times higher than domestic cars. The results of comparing the total repair cost, imported vehicle repairs to the front of the T-car was the highest, rear repairs to the C-car was the highest. New car value for repairs, parts price, damage in terms of imported cars were higher than that of the domestic cars. In order to avoid the social costs of spending, calculated based on proper repairs on imported vehicles, improvement of excessively high parts prices and the repairman cost are needed.

4,000원

8

음향방출법을 이용한 CFRP 복합재의 모드 I 파괴거동에 관한 연구

이장규, 우창기

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.191-197

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In this study, carbon/epoxy composite DCB(double cantilever beam) specimens based on K-means clustering and wavelet transform analyses are presented. For the fracture Mode I, the fiber orientation θ = [0 ]24 and θ = [±45]12 both shown up stable crack growth in DCB testing. For the fiber orientation θ = [0 ]24 , the continuous type AE signal showed at central frequency 130~270kHz, which means that matrix micro cracking was occurred. The Burst type AE signal was occurred at central frequency 200~300kHz due to fiber bridging and fiber breaking. Other burst type AE signals were occurred at central frequency 130~180kHz with very high amplitude due to fiber bridging. For the fiber orientation θ = [±45]12 , the burst type signal showed at central frequency 220~300kHz, which means that fiber breaking was occurred. Mixed type of burst and continuous signals were captured at central frequency 250~480kHz due to fiber friction.

4,000원

9

ADAMS/ANSYS를 이용한 다관절 소방 파괴 방수차의 설계에 관한 연구

김진수, 소수현, 임수홍, 신연재

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.199-204

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In this paper, our aim is to develop a simulation model for Multi-joint demolition water vehicle. 3D model of vehicle is developed with CATIA. The rigid simulation model is built in ADAMS and the flexible simulation models are developed using ADAMS and ANSYS. The combination of the both ADAMS and ANSYS can improve the precision of system simulation. The rigid model with rigid multi-slide booms and rigid refracting booms, the hybrid model with flexible multi-slide booms and rigid refracting booms, and a flexible model with flexible multi-slide booms and flexible refracting booms are considered. The simulation analysis shows a good performance, and valuable results we are interested in are obtained.

4,000원

10

측면 충돌시 차량 리어시트프레임에서의 역학적 거동 해석

조호선, 조재웅

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.205-210

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Among the various parts of automobile, automotive seat is the most fundamental item that ride comfort can be evaluated as the part contacted at human body. Dynamic stabilities on 3 kinds of models are analysed according to inside beam configuration of rear seat frame in this study. Model 1 has the basic design of straight beam. Model 2 has the beam that is curved slightly from model 1 configuration and model 3 has honeycomb structure. Total deformations and equivalent stresses are investigated when these models are crushed at side. Total deformations due to frequencies are also obtained and critical frequencies on these frequency responses are investigated. By comparing total deformation configurations of model 1,2 and 3, model 1 and 2 apply the damage to passengers but model 3 absorbs the damage. Model 1, 2 and 3 show total deformations of 482.7, 178.9 and 151.62 mm at the critical frequencies of 180, 200 and 150Hz respectively. Because model 3 does not apply the damage to passengers and the total deformation at critical frequency becomes minimum among three models on frequency response, this model becomes most stable among 3 kinds of models when crushed at side.

4,000원

11

접착제로 접합된 알루미늄 폼 TDCB 모델의 피로해석에 관한 연구

김성수, 조재웅

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.211-215

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four kinds of models designed by the basis of British industrial standard and ISO international standard in this study. Energy release rates at mode 1 are investigated by the fatigue analysis of aluminum foam TDCB model bonded with adhesive. These analysis models are compared each other by classifying four models into m values with 2, 2.5, 3 and 3.5. The value of m as the gradient of model is represented with the function of crack length(a) and height of model(h). Through the correlation relation, the fracture behavior of bonded material is analyzed and these analysis results can be applied to composite structures of various areas. Mechanical property and fracture toughness of composite material are also analyzed in this study.

4,000원

12

관통류를 갖는 물체의 후류특성에 관한 실험적 연구

조대환, 오승진, 한상국

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.217-222

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Flow control of flow field is essential to design efficient elements relating to fluid machineries. In this study, the flow characteristics of rectangular prism with throughflow at different aspect ratio was investigated to flow control. A particle image velocimetry technique was employed to obtain detailed measurements at throughflow-velocity-based Reynolds numbers. As a results, the throughflow disturbs the development of vertical velocity component and decreased the vortex size.

4,000원

13

해양플랜트용 차양막에 따른 열ㆍ유동특성에 관한 연구

배춘익, 진도훈

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.223-231

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This study is about comparison of thermal and flow characteristics on the wind & radiant heat shield with STS mesh type screen for offshore plant. Numerical analysis was conducted to find transmission coefficient in the mesh and then analyse the flow characteristics about wind & radiant heat shield. The experiment method of solar radiation has been used as thermal radiation source to get the performance of radiant heat shield measurement. The sensor radiation device has been used to measure the reduction of solar radiation with various size of cells and at a distance of 0.5m and 1m from the cold face of the wind & radiant heat shield. The present study show reduction in radiation heat flux as various distance from the cold face of the radiant heat shield. Experimental results are presented for different type of mesh and distance of measurement.

4,000원

14

트위스트 스크린의 지지 프레임에 대한 최적화 설계 파라미터의 결정

이종신

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.233-239

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The object of this study is concerned about the optimal design of the supporting frame in a twist screen. Twist screen is widely used for grading and screening materials in the fields such as coal-selecting, mining-selecting, building materials, electrical power and chemical industry, etc. It is composed of base, supporting frame, vibrator, screen, spring, trough, clamp and etc. Especially, supporting frame in twist screen are stressed by high load, mostly it is shock-type loads. Nevertheless, design of base is dependent on experience, and it will cause reliability reduction and cost increase. The supporting plate is composed by the upper plate, the bracket and etc. This research purpose is to propose and verify a method to achieve higher product quality, lower costs, and far less physical testing. In this study, design parameters used for optimization are the upper plate thickness(8㎜, 10㎜, 12㎜) and the bracket thickness(8㎜, 10㎜, 12㎜) in the supporting frame. The result showed that base weight reduced to maximum 25.8% when compared with the current twist screen.

4,000원

15

냉각유체 유량에 따른 배터리 모듈의 온도분포 분석

류의환, 김우태

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.241-246

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The temperature distribution of a generic battery module was analyzed for different flow rates of cooling fluid. For the given battery module design, the temperature of battery cell near the inlet is higher than that of battery cell near the outlet. Because the inlet is located at the higher elevation than the top of battery electrodes, most of the incoming cooling fluid flows directly towards the battery housing wall above the outlet. For the inlet velocities of 1, 3, 5 m/s, the maximum temperature differences are 28, 19, 15 degrees Celcius respectively.

4,000원

16

작동압력, 작동온도 변화에 따른 고분자 전해질 연료전지 성능해석

조재혁, 김우태

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.247-253

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A three dimensional numerical analysis was performed to study the PEMFC performance characteristics. Operating pressure and operating temperature were selected as simulation parameters. Operating pressure was varied as 1, 2, 3, 4, and 5 atm. Operating temperature was varied as 323, 333, 343, 353, and 363 K. For a constant cell voltage condition, the maximum current density was obtained at operating pressure of 5 atm and operating temperature of 323 K. As operating pressure increases, current density increases because concentration of reactant gases increases. As operating temperature increases, current density decreases because concentration of reactant gases decreases due to high overpotential condition for the considered PEMFC.

4,000원

17

유압장치 내 오일 유동장의 온도변화 특성

최유현, 이상호

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.255-261

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Numerical analysis has been carried out to investigate thermal characteristics for hydraulic system. Overall performance of hydraulic system is largely influenced by oil flow field with heat transfer. Especially thermal characteristics for operating conditions with high oil temperature caused by heavy load and continuous operation are dominant. Oil temperature variation with time in the system is predicted for various flow conditions. Local fluid flow fields at the pipelines, valves, and oil pump in the hydraulic system are considered with thermodynamic and transport properties such as density and viscosity. These results in the study can be applied to the optimal design of hydraulic system.

4,000원

18

Review of the Wear Resistance

Seong-Mo Oh

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.263-272

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The types, properties, and processes for wear resistance are reviewed from the viewpoints of material properties, metallurgy, and tribology. Though materials such as ceramics and polymers are used as the wear resistances materials to provide various useful properties, they can offer excellent corrosion and wear resistances as well as mechanical, physical and chemical properties when combined with metal materials. This paper presents, first of all, the concept of surface, kinds of wear resistances and methods based on the characteristics of surface. For that reason classifies wear resistances followed by each surface modification. This, combined with numerous sophisticated wear resistances processes recently developed, makes them the choice of modifications in a large number of applications. This review has been written with an emphasis on wear resistance consisting materials as opposed to metals, ceramics and polymers. It is hoped that this review will serve as a useful source for literature survey as well as an introduction to the subject of wear resistance with materials.

4,000원

19

자동차 포핏밸브의 열 CVD법 TiC,N표면개질에 따른 트라이볼로지 특성 연구

오성모

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.273-278

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In order to determine the wear properties of CVD ceramic coatings, wear process was evaluated using the coated pin of Falex Tribosystem. Also, in order to determine the effects of coating material on wear process, TiC,N of thickness 5m∼6m coated by Thermal CVD method were applied. The wear property of TiC,N film, the higher the deposition temperature was, the closer the lattice parameter was to the amount of the standard power, and the grain size increased. According to the wear formation, under the control that there is on specific wear rate wear parameter and coating delamination, decrease with increasing sliding friction and when the coating delamination happened.

4,000원

20

자동차 부품 응용을 위한 TbFe와 SmFe박막의 두께에 따른 기계적 특성 해석

이흥식

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.279-284

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Silicon based magnetostrictive structures were fabricated for micro-wireless actuators, and finite element models were developed to predict mechanical characteristics of the actuated structures. These structures can be used to design wireless automotive parts and multi-function packaged micro automotive devices. In the fabrication process, amorphous magnetostrictive films of the optimized binary compound Tb0.4Fe0.6 and Sm0.47Fe0.53 were deposited with various thicknesses on the silicon membrane by DC magnetron sputtering using cast composite targets. Magnetic fields lower than 2KOe (0.2T) were applied for micro-system applications. These films have been tested in a simple cantilever arrangement and the predicted magnetostrictions of the actuated membranes through the developed FE models have been calculated.

4,000원

21

자동차 부품 응용을 위한 자왜 박막의 기판효과

이흥식

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.285-290

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Magnetostrictive thin films can be applied in transmission system for the enhancement of energy efficiency. In this study, four kinds of substrates (Si, glass, Fe, polyimide) with the magnetostrictive thin film layers are prepared and investigated to characterize the magnetic and mechanical behaviors due to the substrates effects. The fabricated substrates have thicknesses of 50, 150 and 500um with cantilever shape. TbDyFe films are deposited by DC magnetron sputtering with 1~10m thick. The deposited film thicknesses are verified using X-ray diffraction. The magnetization of each sample is examined using VSM(Vibrating Sample Magnetometer) and magnetostriction is also measured using capacitance method to characterize magneto-mechanical behaviors. The magnetostriction results as deflections are compared and the results are discussed for micro actuator applications.

4,000원

22

승용차용 타이어의 접지형상에 관한 연구

김병삼, 이태근

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.291-295

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The shape of tire footprint is one of the important factor which affects to the performance of tire such as handling, ride and wear. In this study, the effect of the stiffness for tire footprint is investigated. Some tires on the market were selected and tested the vertical stiffness, lateral stiffness by stiffness measuring system. And the contact length, contact width and contact area are tested, too. The contact width and length is reduced by the increase of the tire stiffness. According to the change of the tire stiffness, the leading edge and trailing edge in the footprint have a different shape.

4,000원

〈생산기술〉

23

다인용 고압산소치료기 챔버의 설계 및 제작

조장현, 임동주

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.297-303

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This paper is concerned with formulating the design specification and making hyperbaric oxygen chamber for multi-users. HBOT(Hyperbaric Oxygen Therapy) is very effective remedy for increasing the concentration of melted oxygen in human and animal body. The melted oxygen supplies to each cell in body to recover the normal condition. This research reported the design specifications and mechanical test results of hyperbaric oxygen chamber made with polyurethane as well as computational analysis with CATIA program. These data can set the physical dimensions of practical HBOT equipment for multi-users and be used to produce the effective commercial model.

4,000원

24

광통신용 비구면 렌즈의 금형 코어 가공 및 해석에 관한 연구

오재국

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.305-310

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In this study, mold core of can type lens for optical communication has been fabricated and heat transfer analysis has been conducted. Through this study, results were obtained as follows. Surface roughness of upper and lower cores by ultra precision grinding were Ra 0.002074(um) and 0.004316(um), respectively. Design P-V and Bestfit P-V as shape accuracy of upper core were 0.0858(um) and 0.0843(um), respectively, and those of lower core were 0.0957(um) and 0.0546(um), respectively. The temperatures of upper and lower surfaces of lens during machining obtained by heat transfer analysis were 576.05℃ and 576.4℃, respectively. In case of inner sleeve, it was estimated that the temperature of the side surface were 575.95℃ by heat transferred from lower core. The maximum and minimum temperatures of lower surface of lens were 576.4℃ and 575.96℃, respectively, according to the positions of holes for air circulation from out side.

4,000원

25

논문게재 안내 외

한국기계기술학회

한국기계기술학회 한국기계기술학회지 제15권 제2호 2013.04 pp.311-318

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