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주조용 고인성 Al합금(NS-50)의 기계적 성질에 미치는 시효처리의 영향
김병수,박기원,김근수,이찬규 國立 昌原大學校 産業技術硏究所 1996 産技硏論文集 Vol.10 No.-
This study was investigated in effecting of solution treatment and aging treatment of NS-50 alloys through hardness test, tensile test, and observation micro structure. Seaching for the best heat treatment conditions of improving mechanical properties.
정경진,김경익,이찬규,남성원 慶熙大學校 大學院 1993 高凰論集 Vol.12 No.-
Recently, as the development of automobile culture, modern user consider car as a moving resident space and demand the agreeable condition of car interior. But, according to age, sex, and individual, there are varieties of user's agreeable degree. So it is necessary that interior conditions should be fit the temperature and air velocity of each user's taste. In early state of car design as well, it must be decided so as to understand the effect of inlet and outlet site to the internal flow and of the site and area of engine room open area to the cooling efficiency. Nevertheless these situations, because of the complexities of boundary shapes, there are a lot of difficulties of theoretical study. So only a few examples were conducted. In this study, in relation to the agreeable feeling. simflified and idealized model is applied to the cartesian coordinates of SIMPLE and studied over interior temperature of 15∼35℃, air velocity of 0.2∼0.9 m/s, exterior temperature of -10∼35℃, in heating and air-conditioning.