http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김민생(Min-Saeng Kim),이재철(Jae-Chul Lee),정석용(Suk-Yong Jeong),안성훈(Sung-Hoon Ahn),손지원(Jee-Won Son),조광제(Kwang-Je Cho),송철기(Chul Ki Song),박실룡(Sil Ryong Park),배태한(Tae-Han Bae) 대한기계학회 2008 大韓機械學會論文集A Vol.32 No.6
Structure evaluation for 70/15 T×105 m LLC(Level Luffing Crane)’s boom was conducted by Finite Element Method. Boom modeled with beam element was fixed by luff rope and boom mount and was received loads from self weight, luff hoisting, traveling motion, slewing motion, and wind force, etc. These applied loads were calculated using various factors presented in the reference standards and were inputted in the analysis model after considering about the adverse conditions of LLC. In the research, deformation, stresses, buckling of boom were evaluated by ANSYS. Structural safety of boom was confirmed in the results of numerical analysis.
김민생(Min-Saeng Kim),이재철(Jae-Chul Lee),정석용(Suk-Yong Jeong),안성훈(Sung-Hoon Ahn),손지원(Jee-Won Son),조광제(Kwang-Je Cho),송철기(Chul Ki Song),배태한(Tae-Han Bae),박실룡(Sil Ryong Park) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Structure evaluation for 70/15 T×105 m LLC(Level Luffing Crane)'s boom was conducted by Finite Element Method. Boom modeled with beam element was fixed by luff rope and boom mount and was received loads from self weight, luff hoisting, traveling motion, slewing motion, and wind force, etc. These applied loads were calculated using various factors presented in the reference standards and were inputted in the analysis model after considering about the adverse conditions of LLC. In the research, deformation, stresses, buckling of boom were evaluated by ANSYS. Structural safety of boom was confirmed in the results of numerical analysis.
SBR 가황물에서 용매추출 및 분리에 의한 PCA 오일 Type 확인법
김민생 ( Min Saeng Kim ),손경숙 ( Kyung Suk Sohn ),이중훈 ( Jung Hun Lee ),김익식 ( Ik Sik Kim ),최성신 ( Sung Seen Choi ) 한국고무학회 2012 엘라스토머 및 콤포지트 Vol.47 No.1
공정오일 내 다핵성 방향족 화합물(PCA)은 무게함량 대비 3%이상 함유한 경우 피부암을 일으키는 것으로 알려졌다. 저함량과 고함량 PCA 오일의 구분 기준은 PCA 함량 3%에 근거한다. 기준 함량 이상이면 발암성 물질인고함량 PCA 오일로 DAE가 있으며, 기준 함량 이하이면 인체에 안전한 저함량 PCA 오일로 TDAE, MES, 파라핀오일이 이에 속한다. 상기 4종류의 공정오일을 적용한 SBR 가황물에 용매 추출 및 분리로 오일을 정제한 후, FT-IR분광 기술을 이용하여 PCA 오일 종류을 결정하였다. 그리고 파라핀 오일이 적용된 SBR 가황물에서 고무 약품인 HPPD, TMDQ, 왁스, 공정조제(Structol-40MS)의 오일에 대한 영향을 연구하였다. 분리 정제된 오일로부터 저함량과 고함량 PCA 오일 구분은 방향족 치환체 흡수영역인 파수 864, 810, 754 및 파라핀 또는 나프텐 흡수영역인파수 721의 상대적인 흡수세기로 확인할 수 있었다. More than 3 wt% of polycyclic aromatics (PCAs) in process oil is known to cause skin cancer. The criterion of distinguishing between low PCA oil and high PCA oil is based on 3 wt% of PCA. High PCA oil is called as a carcinogen like distillate aromatic extract (DAE). Low PCA oil is considered as safety oils like treated distillate aromatic extract (TDAE), mild extract solvate (MES), and paraffinic oil. Four types of process oils such as DAE, TDAE, MES, and paraffinic oil purified by solvent extraction and separation skills from SBR vulcanizates were measured by FT-IR techniques. The effects of rubber chemicals such as N-1,3-dimethylbutyl-N`-phenyl-p-phenylnenediamine (HPPD), polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (TMDQ), paraffin wax as antidegradants, and processing aid like Structol 40MS on paraffinic oil from SBR vulcanizates were also studied. The type of low or high PCA was identified by the relative abundance of absorbance at the aromatic substitution patterns of 864, 810, and 754 cm-1 and at the paraffinic or naphthenic pattern of 721 cm-1.
형상기억합금이 삽입된 복합재를 이용한 지능형 구조물의 제작
정범석(Beom-Seok Jung),김민생(Min-Saeng Kim),안성훈(Sung-Hoon Ahn) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
Shape Memory Alloys (SMA) have been actively studied in many fields utilizing their high energy density. An SMA wire embedded composite, especially, could be used as smart material for load carrying structure and actuator. The composite material with high strength can sustain large load. but at the same time the high stiffness of the material limits the displacement range of the SMA wire embedded composite. In this research, an SMA wire embedded hybrid composite was fabricated to make a larger displacement than the SMA wire embedded single composite. The ∩-shaped hybrid composite is comprised of different stiffness materials, GFRP and silicone rubber, to increase the displacement range of the structure. The displacement of SMA wire embedded hybrid composite was examined by comparing curvature of the composite.