http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박치완,장건익,하동우,성태현,Park, Chi-Wan,Jang, Gun-Eik,Ha, Dong-Woo,Seung, Tae-Hyun 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.5
High-temperature Superconductor(HTS) tubes were fabricated in term of different processing variables such as preheating temperature, speed of mold rotation and cooling rate by centrigugal forming method. For powder melting by induction the optimum range of melting temperatures and preheating temperature were $1050{\circ}C{\sim}1100{\circ}C\;and\;550{\circ}C\;for\;30\; min$, respectively The mould roating speed was 1000 rpm. A tube was annealed at $840 {\circ}C$ for 72 hours in oxygen atmosphere. The plate-like grains were well developed along the loafing direction and typical grain size was about more than $40{\mu}$. It was found that Ic values increased with increasing the Preheating temperature and speed of mold rotation. While Ic decreased with increasing the cooling rate. The measured Ic in $50mm{\times}70mm{\times}2.5mm$ tube was about 896 Amp.
Tape Casting법을 이용한 W-Cu, Mo-Cu 박판소재 제조
박치완 ( Chi Wan Park ),장건익 ( Gun Eik Jang ),김태형 ( Tae Hyoung Kim ),우용원 ( Yong Won Woo ) 한국열처리공학회 2004 熱處理工學會誌 Vol.17 No.5
N/A For the application of heat sink device, the green sheets of powder of W-XCu and Mo-XCu composites were fabricated by tape casting technique. The mixing ratio of powder and binder was 6 : 4. The green sheet was shrinked up to 10~20% after sintering and the maximum relative density was above 95%. Thermal conductivity and Thermal expansion systematically increased with increasing Cu contents. The maximum thermal conductivity of W-20wt.%Cu was about 206[W/mK].
박치완 ( Chi-wan Park ),김종화 ( Jong-wha Kim ),김형석 ( Hyong-seok Kim ),강일권 ( Il-kwon Kang ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.4
The aim of this research was to the experimental data using statistical and spectral analyzing method to get the motion reponses of a stern trawler in operation states such as drifting, sailing and trawling according to the wave height. In drifting, the significant and the maximum valuer of roll in beam sea increased according to the wave height, but those of pitch decreased. The response and the period of peak of roll in beam sea were increased, but those of pitch decreased. In navigation, the significant and maximum values of roll increased remarkably according to the wave height, but those of pitch changed a little. The response of roll was highest in quartering sea, beam sea and then following sea, but those of pitch was highest in bow sea, head sea and then beam sea in the order of all wave heights. The period of peak of roll due to the wave height and the wave direction changed from 3.8 to 9.9 seconds, and those of pitch changed from 3.3 to 10.4 seconds. In trawling, the significant and maximum values of roll increased a little according to the wave height, but those of pitch increased significantly. The response of roll was highest in beam sea, bow sea and then quartering sea, but those of pitch was highest in head sea, following sea, and then beam sea in the order. The period of peak of roll due to the wave height and the direction changed from 6.6 to 10.9 seconds, and those of pitch changed from 6.7 to 11.2 seconds.
최재웅,정병기,윤장혁 한국시뮬레이션학회 2017 한국시뮬레이션학회 학술대회집 Vol.2017 No.-
특허의 기대 수명은 특허 가치 평가에서 필수적인 추정요소 중 하나이다. 그러나 지금까지 특허 수명은 전문가의 정성적인 평가나 과거 경험에 의존해 평가되는 경우가 많았고, 특히, 이렇게 추정된 수명은 급변하는 다양한 기술환경을 반영하지 못하는 경우가 많이 있었다. 이에, 본 연구는 특허의 수명을 평가 할 수 있는 계량적인 모형을 제시한다. 1)대량의 미국 만료 특허로부터 수명과 연관된 지표를 추출하고, 2)특허 유지료 납부 데이터로부터 특허의 수명을 계산하여, 3)딥러닝을 활용해 특허 수명 예측 모형을 구축한다. 이를 통해 계량화된 특허 수명 예측 모형을 얻을 수 있으며, 특히 초기 특허에 대한 객관적인 수명평가가 가능하다.
박병수 ( Byung-soo Park ),강일권 ( Il-kwon Kang ),함상준 ( Sang-jun Ham ),박치완 ( Chi-wan Park ),김수형 ( Su-hyeong Kim ),조현국 ( Hyun-kuk Cho ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.3
Marine casualties originated from fishing vessels occupied about 71.2% of the whole marine casualties in Korea from 2008 to 2014, which has not changed much for a long time. Therefore, a pragmatic counterplan to decrease in casualties in fishing vessel is indispensable for reduction of marine casualties in Korea. Since the casualties occurred by fishing vessels may incline to a specific type of casualties according to the difference in the operating type; in this paper, 11 fishing types which occurred casualties frequently in numbers and occupied ratio were selected. Since the most frequent occurring casualties in fishing vessels were from collisions and fire explosion in statistics from KMST (2008~2014), the study focused on them. The collision is given a great deal of weight in all the casualties mostly due to the negligence of duty regardless of the job types. Gill netter, trap fishing boat, jig boat, multiple fishing boat and stow netter have their own specific causes of casualties in collision according to the operating types. The cause of fire explosion was mainly due to poor inspection and maintenance the electric cord. For this reason, it may be necessary for an operator to make strict precaution on the other vessels under way systematically, keep the regulation for preventing collisions, and for an engineer on watch to make a check the electricity periodically to reduce the fire explosion.
박병수 ( Byung Soo Park ),강일권 ( Il Kwon Kang ),함상준 ( Sang Jun Ham ),박치완 ( Chi Wan Park ) 한국어업기술학회 2014 수산해양기술연구 Vol.50 No.3
Marine casualties originated from fishing vessel occupied about 70% of the whole marine casualties in Korea from 2001 to 2010, this ratio was not much changed as it was before. Therefore a pragmatic counterplan to decrease of casualties in fishing vessel is indispensable for reduction of the nationwide marine casualties. But since the casualties occurred by fishing vessel may have a different causes and counterplan according to the operating type of it, in this paper, fishing vessels classified into 12 types by operating method and inspected the causes and counterplan for that. The operating type of fishing vessel occurred the specific casualties more were jig boat in collisions and fire explosion, trap fishing boat, mixed fishing boats and inshore gill netter in collisions, stow netter in machinery damages and capsizing, offshore gill netter in machinery damages, fish carrier in collisions. It must be emphasized that the higher ranked types of vessels, especially jig boat have to take special care to the approaching vessels under way, trap fishing boat to rear look out and mixed fishing boat must keep on safety speed and be taken an education for advance the skill of operating radar as well. For all 12 types of fishing vessel, it is necessary for an operator to make strict precaution on the other vessel under way systematically and keep the regulation for preventing collisions, and for an engineer on watch to make a check the electricity and the engines periodically for reduction the fire explosion and machinery damages.
Azimuth thruster 시스템을 장착한 나라호의 조종성
김정창,강일권,이준호,함상준,박치완,김수형,KIM, Jung-Chang,KANG, Il-Kwon,LEE, Jun-Ho,HAM, Sang-Jun,PARK, Chi-Wan,KIM, Su-Hyeng 한국수산해양기술학회 2017 수산해양기술연구 Vol.53 No.3
The research vessel NARA equipped with an azimuth thruster system was built in 2015. There are few vessels with this propulsion system in Korea. This vessel has two modes such as the normal for maneuvering and the power for investigation, and the other two modes as one axis and two axes on the operating. This type of vessels does not seem to have a clear grasp of the maneuvering character in comparison with the vessel with a conventional propulsion system. So the authors carried out the sea test for the turning, the zigzag and the inclination, and the results are as follows. In turning test, the case of using the two axes mode is much better than the case of using the one axis mode for the elements of turning, such as advance, transfer, tactical diameter and final diameter, but turning hard over the rudder in full speed is very vulnerable to capsize in both modes. In zigzag test, the yaw quicking responsibility index, T is very large excessively, which means a bad counter maneuvering ability, so an operator has to keep in mind that in turning operation. If necessary to avoid collision at head on situation, it may be a more effective method to use the crash astern stop than the turning according to the conditions and circumstances for the shortest stopping distance is very short.
황창규 ( Hwang Chang Gyu ),장건익 ( Jang Geon Ig ),박치완 ( Park Chi Wan ),김태형 ( Kim Tae Hyeong ),우용원 ( U Yong Won ) 한국열처리공학회 2003 熱處理工學會誌 Vol.16 No.6
N/A In Mo-Xwt%Cu compound, physical and thermal properties were systematically evaluated in terms of Cu contents and sintering temperature. Typically Cu contents were vaned from 15 to 25wt% and also the sintering temperatures were changed from 1115℃ to 1350℃. In physical properties, Mo-l5-㎛/m℃] at sintering temperature of 1300℃. Especially, Mo-25wt%Cu has the maximum hardness of 173.4 at sintering temperature of 1150℃ and the maximum thermal expansion of 9.0[W/mK] as the specimen heated in the range of temperature from 50℃ to 400℃. Based on electrical conductivity measurements, the relative density increased with increasing Cu contents and the values were in the range of 100-150[W/mK].