http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
효과적인 지역화 학습을 위한 CD Title의 설계 및 구현
공용해,오세두 순천향대학교 부설 산업기술연구소 1998 순천향 산업기술연구소논문집 Vol.3 No.3
Nowadays the importance of regional education is ever increasing. Regional education aims students to learn social concept through personally experiencing their society. But the high cost in personal experience and the lack of supplementary media for regional education make the education less effective. Moreover the education media needs to be developed appropriate to individual region to be considered. For this reasons, a CD-ROM title for regional education is designed in this research. Since the CD-ROM title can be designed appropriate to the specific region and provide various multimedia effect to students, the design of CD-ROM title is very effective in achieving regional education.
차세대 대체냉매 CO₂를 이용한 스크롤 압축기 구동부의 마찰 마멸특성 평가
오세두(Se-Doo Oh),문재용(Jae-Yong Moon),조성욱(Sung-Oug Cho),이인주(Inju Lee),김철우(Cheol-Woo Kim),이영제(Young-Ze Lee) 한국트라이볼로지학회 2003 한국트라이볼로지학회 학술대회 Vol.36 No.-
The natural refrigerant CO₂ has attracted as an alternative refrigerant currently used in air conditioning system, which has high ㆍglobal warming potential. In this study, the tribological characteristics of the sliding surfaces between a fixed scroll and an orbiting scroll of the scroll compressor were investigated in CO₂/POE mixed environment. The pin-on-disk type sliding tests were carried out under the various sliding speeds, normal loads, surface roughness, and pressures. During the test, friction forces, wear amount and surface temperature were monitored.
오세두(Se-Doo Oh),안종찬(Jong-Chan Ahn),박순철(Soon-Cheol Park),정원욱(Won-Wook Jung),배동호(Dong-ho Bae),이영제(Young-Ze Lee) 한국트라이볼로지학회 2003 한국트라이볼로지학회 학술대회 Vol.37 No.-
In the present study, the residual stresses can have a significant on the life of structural engineering components. Residual stresses are created by the surface treatment such as shot peening or deep rolling. The objective of this experimental investigation is to study the influence of friction and wear characteristics due to residual stress under dry sliding condition. Friction and wear data were obtained with a specially designed tribometer. Test specimens were made of SUP9(leaf spring material) after they were created residual stress by shot peening treatment. Residual stress profiles were measured at surface by means of the X-ray diffraction. Sliding tests were carried out different contact pressure and same sliding velocity 0.035m/s(50rpm). Leaf spring assembly test used to strain gauge sticked on leaf spring specimen in order to measure interleaf friction of leaf spring. Therefore, we were obtained hysteresis curve. As the residual stresses of surfaces increased, coefficient of friction and wear volume are decreased, but the residual stresses of surfaces are high, and consequently wear volume do not decreased. Coefficient of friction obtained from leaf spring assembly test is lower than that obtained from sliding test. From the results, structural engineering components reduce coefficient of friction and resistant wear in order to have residual stresses themselves. Leaf spring;Shot peening;Residual stress;Interleaf friction force