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유량측정 오차에 미치는 유동조건의 영 향 검출방법 연구
이광복,최해만,백종승,Lee, K.B.,Choi, H.M.,Paik, J.S. 대한설비공학회 1991 설비공학 논문집 Vol.3 No.1
The effect of flow conditions on flow measurement is difficult to identify from the inherent characteristics of the flowmeters and flow standard system. A new experimental approach has been attempted to detect the turbine meter error due to inlet flow conditions. In this try not only the design of the turbine meter package but also the data analysis method was altered. It was found that k factor slope of the turbine meter responds to the change of flow conditions in the test line with higher sensitivity than the degree of the data scattering. The flow standard system of $0.1m^3/s$ was chosen for the investigation. The systematic and random error of the system were less than ${\pm}0.08%$ and ${\pm}0.13%$ respectively.
박경원(K. W. Park),이창면(C. M. Lee),이광복(K. B. Lee),이재철(J. C. Lee) 한국소성·가공학회 2008 소성가공 : 한국소성가공학회지 Vol.17 No.7
This study demonstrates that preloading via the elastostatic compression imposed on amorphous alloys at room temperature induces homogeneous plastic strain associated with structural disordering. This structural disordering causes disorder, which at room temperature creates excess free volume and in turn enhances the plasticity. In this study, we investigated the effects of various parameters, such as stress level, flow rate and preloading time, on the degree of the structural disordering at room temperature. On the basis of the present findings, we proposed a method of enhancing the plasticity of amorphous alloys.
튜블러 빔 냉각 조건에 따른 CTBA 성능 향상에 관한 연구
김병년(B. N. Kim),박종규(J. K. Park),이광복(G.B Lee),김영석(Y. S. Kim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
Apply to high-strength steels for the purpose of weight reduction for improved fuel economy car chassis parts are becoming more and more importance. Formability to overcome for hot stamping process accordingly apply the research has been actively conducted. In this study, after forming, to obtain a reduced thermal deformation and uniform phase transformation for the purpose by improving the Die cooling channel. In conclusion, automotive chassis parts CTBA performance is improved.