http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 함영복(Y.B. Ham) (검색결과 183 건)
- 무료
- 기관 내 무료
- 유료
-
-
-
-
함영복(Y. B. Ham),박인섭(I. S. Park),박중호(J. H. Park),윤소남(S. N. Youn),신경철(K. C. Shin),이기태(G. T. Lee) 유공압건설기계학회 2013 유공압건설기계학회 학술대회논문집 Vol.2013 No.10
This study proposes a new mechanism for needle-free drug injection into the skin of agricultural animals that can be simple, lightweight and high response characteristic, for the delivery of proteins or vaccines. Jet injectors, which deliver drugs into the skin using compressed springs or compressed gas, provide a needle-free method of conventional transdermal drug delivery. However, the compressed spring or gas type injector has the drawbacks of high weightand impact noise. On the other hand, the high pressure injection device using a high pressure pump and an on-off valve has the advantage that it is smaller than the noise of spring or gas injectors. For this reason, we propose a mechanism that consists of a high pressure pump, an accumulator, an on-off valve and an injection nozzle. We tested a commercial injector- a compressed gas injector - and the impact gun type injector - a compressed spring injector - and used them to verify new specifications. The accuracy of injection was measured with an electronic weight balancer. Finally, the proposed mechanism was evaluated their suitability for needle-free drug injection based on results of the analysis and comparison of all the injectors.
-
함영복(Y. B. Ham),최준혁(J. H. Choi),윤동원(D. W. Yun),윤소남(S. N. Yun),서종수(J. S. Suh) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
This paper presents a sealing mechanism of the gerotor motor in order to develop a low speed and high torque gerotor motor. A gerotor motor is suitable for weight transfer system, such as winch system, weight conveyer system, wheel and angular drivers and mixers etc. To develop a low speed and high torque gerotor motor, the rotor profile was investigated using the space volumetric method. Also, the gap between the rotor and stator was evaluated in order to confirm the design method of rotor profile.
-
함영복(Y. B. Ham),노종호(J. H. Noh),박중호(J. H. Park),김고도(K. D. Kim) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
As water hydraulics is more and more highlighted in wide applications, many varieties of research on design, materials and manufacturing methods of water hydraulic components have been carried out. Especially, water hydraulic piston pump used to be the subject of study in relation to its relative sliding movement. In these relative sliding parts, the leakage and friction probably took place because of the characteristics of low viscosity and poor lubrication of water. In order to reduce the leakage and friction, the gap can be filled up nearly by using coated-plastic as an anti-wear material on sliding parts. In this paper, before applying the plastic-coated sliding components against the stainless steel to a hydraulic piston pump, the friction and wear test has accomplished with engineering plastic(PEEK) and stainless steel(STS420) specimen. The test machine is a pin-on-disk type, and is able to regulate the load and velocity properly. As a result of the test, tribological characteristics on materials of engineering plastic(PEEK) and stainless steel(STS420) had been verified in the effective and economic respect.
-
함영복(Y. B. Ham),구지석(J. S. Gu),김대명(D. M. Kim),김성동(S. D. Kim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
The radial piston pump has lots of advantage as followings; high operating pressure, compactness, high mechanical efficiency and so on. However this pump also has disadvantage that plunger type piston induce large friction due to sliding. In this study, the ball type piston pump was designed to decrease the friction loss on the plunger type piston pump. To confirm the decreasing of friction loss in the designed pump, The pressure and flow rate characteristics ware measured while the operation condition was changed. After that, the power efficiency of the pump was worked out at experimental data. From this result, the performance of small radial ball piston pump was confirmed.
-
-
-
연료전지 Stack Cooling을 위한 압전 공진펌프 설계에 관한 연구
함영복(Y. B. Ham),송종진(J. J. Song),박중호(J. H. Park),안국영(K. Y. Ahn) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
In the stack cooling of household fuel cell system(1kW), cooling water pump has been demanded for compact size, low power consumption and constant delivery-performance of the cooling water. To obtain sufficient performance for practical application in above-mentioned area, in this paper, we studied on piston pump using multi-layer PZT actuator(5mm×5mm×18mm). The piston pump used a multi-layer PZT(16㎛ displacement at 100 Vpp) as a reciprocating motion actuator and structure producing resonance to amplify the displacement of a moving piston. The pump composed of two springs and the piston that could be supported a multi-layer PZT. We also decided the mass of moving parts, the stiffness coefficient of two springs with simulation. In this simulation, we predicted the resonant displacement and frequency of the pump. Then, based on the obtained results, without a mechanical amplification, we could make a large displacement.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
