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Cu-Zn-Al 형상기억합금의 첨가원소에 따른 감쇠능의 변화
이상관,정찬상 대한금속재료학회(대한금속학회) 1989 대한금속·재료학회지 Vol.27 No.1
The effect of misch metal, Ti, Ni and Mn on damping capacity of Cu-Zn-Al shape memory alloys and the optimum heat treatment condition for high damping of the alloy have been studied. Specific damping capacity(SDC) of both Cu-Zn-Al alloys and the elements added Cu-Zn-Al alloys show amplitude dependence and increase with increasing maximum strain amplitude. Maximum SDC of the Cu-Zn-Al alloys are not dependent of composition, but nearly constant about 42% in the range of transformation temperature. Maximum SDC of the elements added alloys is, however, decreased a little but the step quenching and low temperature aging process is suitable heat treatment condition to increase in SDC of the elements added alloys.
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이상관 경운대학교 산업기술연구소 2002 産業技術硏究論文誌 Vol.5 No.1(B)
This study aims to propose implemental strategy to enhance the efficiency the dwelling environment enhancement projects in Daegu Metropolitan city. To accomplish these objectives this study reviews two different redevelopment projects, such as community of dwelling house, field renewal method. Finding of this study show that in order to provide rational criteria for the various urban renewal projects selected criteria which can determine the conditions of surrounding environment should be classified as detail as possible. Finally, this study emphasizes the importance of citizen participation in the dwelling environment enhancement project to achieve the projects' orginal goals and public concerns.
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이상관,박찬돈,이명권 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)
In this study, driver's parking behavior characteristics in C.B.D were analyzed by quantification theory Ⅱ, and the variables deeply correlate with parking behavior. And for developing parking choice model, binary logit model was applied to the case of that choice alternative were legal or illegal parking and on-road or off-road parking, and multinominal logit model that can predicts three alternatives simultaneously was applied to the case of that choice alternatives were on-road, off-road and illegal parking. Parking choice models developed in this study, are expected to generate available data in developing and validating parking policy.
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도시가로에서 교통류 특성과 교통용량 산정기법에 관한 연구
이상관,박찬돈 경운대학교 산업기술연구소 2000 産業技術硏究論文誌 Vol.3 No.1(B)
The purpose of this study is to traffic flow characteristics and the proper method of estimating traffic capacity on the arterial. The major results of this study can be summarized as follows ; (1) The relationship of density and speed, Greenshields model is proper than other models. (2) The density estimated through S-V relationship is 174 ㎞. (3) The methods used in this paper yields more stable values with 2286 veh./h.
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이상관,홍성우,이두진 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(C)
This study analyzed the variation of delay time to speed and traffic volume on various comparative and analytic methods, link construction in Daegu City's urban street as the basic data on traffic management counterplan under road construction. The delay time at the link is calculated by applying three methods of capacity analysis, shockwave theory and gueueing theory. While the result of the capacity analysis is similar to that of shockwave theory. The result of the queueing theory shows that v/c increases rapidly at 0.4 and increases slowly from 0.7 The results of comparative-analysis between the outcoming of the shockwave theory, queueing theory and capacity analysis at two or three-lane-road like and underwood value, the actual field survey outcoming are as follows : The queueing theory shows the most suitable reliability at two-lane-road and capacity analysis shows the most suitable reliability at three-lane-road.
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