Earticle

Home

Issues

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
    1999~2018
  • 등재여부
    KCI 등재
  • 주제분류
    공학 > 기계공학
  • 십진분류
    KDC 550 DDC 621
제20권 제3호 (21건)
No

<학술연구>

1

고속전철 내ㆍ외장재용 경량 알루미늄 합금의 압출기술 개발

김기주

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.267-272

※ 기관로그인 시 무료 이용이 가능합니다.

In this study, the extrusion process of 6xxx series aluminum cast alloy for high speed train interior or exterior parts are developed. For casting, selection of optimum alloying elements, dissolution technology, de-gassing process, production of molds conforming to the conditions of use, development of casting process control technology for various shapes and materials are performed for the development of high-quality, high strength aluminum alloys. The development of more high farmable extruded aluminum casting alloys for interior or exterior materials has been the scope of this study. The extruded die design was performed for the 6063, 6061 and 6N01 alloy profiles and extrusion test was executed. From these results, the extrusion conditions such as extrusion pressure following as billet temperature and materials were carefully examined.

4,000원

2

높이조절 테이블의 하중에 따른 구조해석

왕쩐후안, 권영철

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.273-278

※ 기관로그인 시 무료 이용이 가능합니다.

In this study, the structural analysis was performed by using Solidworks program to investigate the stress and displacement characteristics of upper desk and table arm depending on the types and positions of load applied to the height-adjustable table(Cases 1, 2, 3, 4). The simulation was used to model the table and create the mesh for computational analysis. The height-adjustable table consists of three parts, upper desk, table arm and support body. Case 3 with the side concentrated load showed the maximum stress and maximum displacement at table arm and upper desk. From the stress and displacement characteristics of the upper desk and table arm, the stresses at the bending part of table arm and the deflection at the front part of upper desk were the greatest.

4,000원

3

SUS 육각봉 인발성형 시스템의 몰드 프레임에 관한 구조 안정성 평가

이영식, 양영준

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.279-286

※ 기관로그인 시 무료 이용이 가능합니다.

SUS hexagonal bar has been widely used to make many kinds of hexagonal bolt/nuts and fittings. Peeling machine is used to make lustrous and clean surface of SUS circular bar in order to remove rust and impurities from surface of raw SUS circular bar. Similarly, roll unit system is used to make SUS hexagonal bar from SUS circular bar with lustrous and clean surface. Roll unit system is mainly divided into two parts ; one is roll unit and the other is mold frame. The purpose of this study was to evaluate the structural stability of mold frame supporting roll unit with numerical analysis. As the numerical analysis result, higher structural stability was gradually shown in order of models 4, 2, 3 and 1. It was considered that the structural stability of this study was influenced by the decrease of mold frame size, especially height decrease.

4,000원

4

알루미늄 및 용융아연도금강판의 다겹 Self-Piercing Rivet 접합특성에 관한 연구

권의표, 이광진

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.287-293

※ 기관로그인 시 무료 이용이 가능합니다.

Multiple galvanized steel and aluminium alloy sheets were joined by self-piercing rivet(SPR) and hybrid joining(SPR + adhesive bonding). In this study, tensile-shear load and fatigue properties of multi-layer SPR and hybrid joints were investigated. Moreover, tensile-shear deformation behavior of the joints under different specimen configurations was investigated. Depending on the specimen configurations either top sheet tearing failure mode or rivet tail pull-out failure mode was observed during the tensile-shear tests. The top sheet tearing failure mode resulted in low maximum tensile-shear load, but it led to larger displacement value as compared to that in the tail pull-out failure mode. Maximum tensile-shear load of hybrid joints was about four times higher than that of SPR joints. Also, fatigue limit of hybrid joints was about two times higher than that of SPR joints.

4,000원

5

건물밀집지역에서 철도소음의 예측 및 평가에 관한 연구

김형두

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.294-299

※ 기관로그인 시 무료 이용이 가능합니다.

The source of wayside noise for the train are the aerodynamic noise, wheel/rail noise, and power unit noise. The major source of railway noise is the wheel/rail noise caused by the interaction between the wheels and rails. The Structure borne noise is mainly a low frequency problem. The train noise and vibration nearby the elevated railway make one specific issue. The microphone array method is used to search sound radiation characteristics of elevated structure to predict the noise propagation from an elevated railway. In this paper, the train noise and structure borne noise by train are measured and prediction. From the results, we investigated the effect for elevated railway noise.

4,000원

6

이중 소재를 갖는 브레이크 디스크의 제동 성능에 관한 연구

배희은, 김현수, 류미라, 전환영

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.300-305

※ 기관로그인 시 무료 이용이 가능합니다.

The purpose of this research is to reduce the weight of the brake system of vehicles and to increase braking performance and its durability and to shorten the stopping distance. The plans for light-weight vehicles are to develop light weight material itself which possesses superior properties and another way is to improve the manufacturing method of materials which have the better mechanical properties. And the materials used for this are aluminum alloy, magnesium alloy, titan alloy, steel, other metals, plastic, ceramic materials etc. In this research, aluminum is used for the main body of the break to reduce the weight of the brake and cast iron(SCM4), stainless steel(SUS304) and titan alloy(Ti Gr2) are used for the outer ring shape plate and assembled with bolts. Dynamometer test are braking performed on the brake disc. Based on the test results, stainless steel(SUS304) is optimized for the light-weight brake disc.

4,000원

7

내구성 및 전력효율 향상을 위한 하이브리드형 태양광 에너지 저장장치 개발

김기주

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.306-311

※ 기관로그인 시 무료 이용이 가능합니다.

The ultimate goal of this development is a hybrid solar energy storage device. It supplies stable power to the load due to the emergency generator that compensates for the power shortage due to solar power generation. We have developed a stand-alone photovoltaic power generation and energy storage system with a dual inverter that extends the performance life of the PV system. It solves the problem of shortening the lifespan of battery due to repetition of charge / discharge of PV system and supplies stable power to load due to emergency generator that compensates for power shortage due to solar power generation, and furthermore, A stand-alone photovoltaic power generation system having a dual inverter for extending the life span and a control method thereof. We have also developed an optimized energy solution that enables us to save and use the remaining surplus power in the ESS to save energy through efficiency, optimization and substantial energy savings.

4,000원

8

지식기반설계 시스템을 이용한 광학 구조물의 초기 설계 알고리즘 개발

김경표

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.312-320

※ 기관로그인 시 무료 이용이 가능합니다.

This paper describes a development of design tool for knowledge based engineering(KBE) that covers structural, aerodynamic, and optical analysis of large-scale telescope structures. A module of the commercial program Adaptive Modeling Language(AML) was used to develop a knowledge-based design tool that reflects the design of parameters for rapid design change and analysis. Through this study, it is proposed a design tool with a knowledge based engineering and a function based design technique. The knowledge based engineering design is good at frequent design changes, and it is effective to extract a core design behavior from previous designs. It is concluded that the developed tool can bring fair effects in implementing a time and cost-effective design environment.

4,000원

9

동절기 백연저감 열교환 시스템의 열전달 성능에 대한 실험적 연구

왕쩐후안, 권영철

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.321-326

※ 기관로그인 시 무료 이용이 가능합니다.

In the present study, the white reduction system was designed and manufactured to evaluate the performance of a heat exchange system using a wave heat exchanger. The reducing effect of white smoke and the amount of heat recovered from cooling water were investigated experimentally using the cooling and dehumidifying method. The white smoke reduction system consists of two parts; the generating part and the reducing part of white smoke. Experimental conditions on EA(exhaust air) and SW(supply water) were fixed. And the outlet temperature and absolute humidity of EA were measured according to inlet velocity of SA(supply air). The outlet temperatures and absolute humidities of EA gradually decreased as inlet velocities of SA increased. From the experimental results, we can see that the absolute humidity reduction rate of EA was max. 84%, and the heat recovery rate of SW was max. 42%.

4,000원

10

30피트급 고속 쌍동형 크루즈보트 선형개발과 저항성능에 관한 연구

정우철, 김성찬

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.327-332

※ 기관로그인 시 무료 이용이 가능합니다.

In this study, a 30ft class high speed catamaran cruise boat is designed and resistance performances are investigated by model test at a circulating water tank. Design speed of the boat is 17knots(8.7m/s) and maximum speed is 20knots(10.3m/s) using 330ps twin engine. Each single bodies are designed unsymmetric planing hull considering high speed-length-ratio(Froude number) and wave interaction at inner part of the hull. Small size fins like chine are attached near free surface at each outside of the hull to separate wave along the hull side. The results show that the small chine plays a big role in separating the wave flowing along the hull. However, in the case of relatively heavy boat such as the developed hull, such a small power due to chine can not cause additional lift and cause resistance increase.

4,000원

11

개방형 홀 구조를 가진 라미네이트 구조물의 점진적 파손 해석

김경표

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.333-340

※ 기관로그인 시 무료 이용이 가능합니다.

Laminated composite structures have started to play a very significant role in primary and secondary structural weight savings in high performance automobile industries. However, one of the main challenges in implementing these composites is the lack of understanding of the progress of the damage under various loading conditions. In order to understand the influence of design parameters related to the use of composite materials, a proper study of the laminated composite structures requires a complete failure analysis, which includes both initiation and propagation of damage. In this study, a new damage model was developed to predict the progressive damage of the composite, and the progress of damage was investigated by making center-notch and open-hole tensile test specimens for various lay-ups. The simulations, in agreement with experimental tests, indicate that the model is capable of predicting the failure load in open hole composite structures.

4,000원

12

개방형 홀 구조를 가진 라미네이트 구조물의 점진적 파손 해석

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.333-340

※ 기관로그인 시 무료 이용이 가능합니다.

Laminated composite structures have started to play a very significant role in primary and secondary structural weight savings in high performance automobile industries. However, one of the main challenges in implementing these composites is the lack of understanding of the progress of the damage under various loading conditions. In order to understand the influence of design parameters related to the use of composite materials, a proper study of the laminated composite structures requires a complete failure analysis, which includes both initiation and propagation of damage. In this study, a new damage model was developed to predict the progressive damage of the composite, and the progress of damage was investigated by making center-notch and open-hole tensile test specimens for various lay-ups. The simulations, in agreement with experimental tests, indicate that the model is capable of predicting the failure load in open hole composite structures.

4,000원

13

BOSCH 솔레노이드 방식의 Grade 인젝터와 IQA 인젝터 불량이 연료 분사량제어에 미치는 영향에 관한 실험적 연구

강성구, 김철수

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.341-346

※ 기관로그인 시 무료 이용이 가능합니다.

In this paper, 'Pico scope' was used to measure and analyze high voltage waveforms of 'Grade injector' and 'IQA injector' due to defective solenoid injector of CRDI diesel engine, and the following conclusions were obtained. In the case of the injector of 'Grade Injector' and 'IQA Injector', there was no change in the injection timing of the injector while the injector was installed. However, by controlling the operation time, It is judged that the injector control is insufficiently controlled when the number of revolutions of the engine is increased to 2000 rpm and 3000 rpm in the idling state in the idling state because the injector failure is precisely controlled in the idling state, When determining the fault injector, the waveform of the 'Grade injector' and 'IQA injector' can be detected by waveform analysis by comparing the injection control time by measuring the high voltage waveform of the injector control in idle idling state. Can be easily diagnosed and maintained. I hope this study will be handed to the mechanics to make diagnosis of CRDI injector convenient.

4,000원

14

풍력터빈 블레이드의 결빙 현상에 대한 수치적 연구

김병택, 김대영, 고경남, 현명택

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.347-353

※ 기관로그인 시 무료 이용이 가능합니다.

An icing phenomenon of wind turbine blade are caused by wind speed, air temperature, liquid water content, droplet size, and so on. In this study, the analyses were carried out at a liquid water content of 0.20g/㎥, droplet size of 25 um, wind speed of 11.4m/s and air temperatures of -15, -10, -5℃ using NREL 5MW wind turbine. The software uses FENSAP-ICE's CFD Flow Solver, Drop 3D and ICE 3D. The analysis of icing shape and mass with temperatures according to air foil was derived, and the required heat quantity for de-icing was calculated at NACA 64618 airfoil for air temperature of -15℃. Power curves with wind velocities are suggested for economical analysis.

4,000원

15

삼원배치법을 이용한 자동차 후면 열선의 성능 평가에 관한 연구

류미라, 전환영

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.354-359

※ 기관로그인 시 무료 이용이 가능합니다.

Both theoretical and experimental investigations were conducted to analyze defrosting behavior of a window heater operating in the low outdoor temperature(-20℃). To achieve this purpose, first a warm-chamber experiment(23℃) were performed to measure inner and outer surface temperature of the rear window as functions of both time and position. Secondly, a cold chamber experiment was made to continuously record defrosting process of the frosted window. Therefore this study was carried out to presume for mutual relation of analysis condition to get the optimum temperature distribution by three-way layout. The results shown that coefficient of determination has a fine reliability over 99.77%, 99.85% and temperature distribution is made by three-way layout.

4,000원

16

대형기계 및 고출력기계의 소음 정보 데이터베이스

김병삼

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.360-365

※ 기관로그인 시 무료 이용이 가능합니다.

The study on the database for the noise of the large machine and high power machine. The object of this project is to prepare the countermeasure of the health care according to investigate and database the basic information of the large machine and high power machine. To accomplish the object ; The dimension and noise of the large machine, which is mounted in the factory, was investigated. And the prediction and measurement method of the noise for the machine by manufacturers were investigated. The database of the noise by the machine type and power was built. The measurement and management methods for the machine noise were considered. The database of the noise was built from the measurement data. The major sound sources and frequency range for the large machine and the high power machine were investigated. The noise effect by the large machine and the high power machine was investigated. The application fields are; The setting of the management plan of the noise which generates from the large machine and the high power machine. The effective noise reduction for the major sound source with low cost. The application as the frequency transition considering the psycho-acoustics characteristics.

4,000원

17

고압 다이케스팅 공정을 이용한 대형 트럭 현가장치용 알루미늄 V-arm 개발

문민석, 송준혁, 유명한, 노종일, 오제하, 양성모, 문상돈

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.366-371

※ 기관로그인 시 무료 이용이 가능합니다.

The investigation on the lightweight of automobiles has been underway in commercial vehicles as well as passenger cars due to global warming and strengthening of European emission standards. In this study, the V-arm were developed for lightweight parts using aluminum alloy instead of steel with high pressure die casting processing. This study has focused on lightweight adaptive concept design. Several models of V-arm were designed and analyzed for the fluidity and solidification. V-arm was produced with ADC12 by high pressure die-casting process. The mechanical properties of developed V-arm were measured; such as tensile strength, elongation, shear strength, and durability. The possibility of mass production with the light weight aluminum V-arm substitute from the steel. The weight was reduced about 38% from 16kg to 9.98kg. The productivity was improved with decreasing the process from 8 to 5 by All-in-0ne process using high pressure die-casting.

4,000원

<생산기술>

18

소방로봇의 열 차폐 시스템 연구

오연택

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.372-376

※ 기관로그인 시 무료 이용이 가능합니다.

Fire fighting robots to cope with fire are used to support fire fighting activities of firefighters. In the field of fire, the thermal performance test of the fire fighting robot is indispensable as the radiation intensity is high. For this purpose, a thermal barrier material which can be used for heat shielding was selected. Also, the results of the thermal barrier study, which can improve the heat shielding for the fire fighting robots, are presented by evaluating the characteristics of the heat shields of the material. By coating the Ag film on the surface of the robot, heat transmitted to the inside can be shielded, and the thermal barrier effect due to the difference in the thickness of the Ag coating can be seen. It can be seen that a secondary thermal barrier system using an Ag coated insulating box and a heat insulating board capable of protecting the electronic devices of the fire fighting robot at high temperatures and protecting the electronic devices for smooth functioning is efficient. This study is introduced a thermal barrier structure and system that can be used for fire fighting robots.

4,000원

19

실린더 내 유동해석에 레이저 기반 유동 진단기술 적용을 위한 실험용 Four-valve SI 기관의 설계 및 제작기술 개발

유성출

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.377-382

※ 기관로그인 시 무료 이용이 가능합니다.

An AVL research engine, type 520, is modified to adapt to the 3.5L four-valve SI engine. With these given engine configurations, a test rig is constructed which allows easy changing of the different pistons and engine heads with a motoring capacity up to 3500 rpm. Nearly complete optical access to the inside of the cylinder is obtained by installing a transparent quartz cylinder on an AVL single cylinder engine. To avoid lubrication and to minimize scratches in the quartz cylinder the piston rings are made of Rulon-LD. With this experimental engine, researches for the in-cylinder flow characteristics by changing the induction system have been carried out using the laser based flow diagnostic techniques. In accordance with the previous result, it is evident that larger sized particles would be required in order to observe the flow characteristics of interest. The flow visualization taken with microballoon particles shows significant improvement. This provide detailed information.

4,000원

20

첨가제 및 소결조건에 따른 무급유 베어링 강판 기공성 평가

권일현, 이정권

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.383-388

※ 기관로그인 시 무료 이용이 가능합니다.

Recently, the interest in the development of Oilless bearings, which is a kind of sliding bearing, has been attracting to industry. Oilless bearings are mainly used in areas where fluid lubrication is difficult to apply because of large contact area. The purpose of this study is to develop products with higher load and durability compared to the conventional oilless bearing. For this purpose, the optimal steel sheet was obtained and the porosity evaluation was carried out by evaluating bronze sinterability for various steel sheets. The conclusion obtained is as follows.; It was found that steel plate suitable for bronze powder plate is SPCC CR (Cold Rolled). The average porosity of KAG-23, KAG-23G and PBF-8 specimens was 16.8%, 17.8% and 22.1%, respectively, indicating that the porosity of PBF-8 specimen was the highest. As the number of rolling increases, the surface porosity decreases rapidly.

4,000원

21

Instructions to Authors 외

한국기계기술학회

한국기계기술학회 한국기계기술학회지 제20권 제3호 2018.06 pp.389-401

※ 기관로그인 시 무료 이용이 가능합니다.

4,500원

 
페이지 저장