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액체금속의 표면형상제어를 위한 고주파 유도코일 시스템에 대한 연구
오영주(Young-Joo Oh),강경하(Kyong-Ha Kang),정순효(Soon-Hyo Chung),심재동(Jae-dong Shim) 한국자기학회 1996 韓國磁氣學會誌 Vol.6 No.6
This study is conducted to develop the high frequency inductor with ferro-yoke for the surface shape control. A 3-Dimensional simulation program based on the finite element method is developed for calculating electromagnetic field of the high frequency inductor. The validity of the program and the capability to control the liquid metal shape are confirmed by comparison between the results from calculation and those from measurement.
Fe-5%Al 과 Fe-28%Mn 합금의 병렬접합이 감쇠능에 미치는 영향
이규환,신명철,강경하,최종술 대한금속재료학회(대한금속학회) 1996 대한금속·재료학회지 Vol.34 No.10
The changes in the damping properties of the Fe-5%Al and Fe-28%Mn alloys have been studied when they are bonded in parallel. When they are not bonded, the specific damping capacities (SDC) of the Fe-5%Al and Fe-28%Mn alloys have been found to be higher than 40% at a strain of 0.05% and more than 10% over 0.05% strain, respectively. In the case of Fe-5%Al alloy surface strain and applied magnetic field decrease the damping property to some extent. As the bonding volume ratio of Fe-5%Al to Fe-28%Mn was varied from 1:1 to 3:1, the tendency of measured SDC vs strain curves follows the theory for composite alloys at all three volume ratios. So the bonded alloy shows damping properties of both Fe-5%Al and Fe-28%Mn alloys.