http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
충돌안전성능 향상을 위한 일반철도 전두부의 개념모델 개발에 관한 연구
권태수(Tae-soo Kwon),정현승(Hyun-seung Jung),최원목(Won-mock Choi) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
The purpose of this paper is to develop crshworthiness structural design of next generation of Korean Railway Vehicle. To this purpose, Two main design concepts are setup to protect the both crews and passengers from serious injury at heavy collision accidents, and to reduce damages of the train itself at light collision accidents. In order to improve safety, the front end structure can absorb an amount of impulse energy with controlled manner. After many failures, the proposed design could be produced. In the process of the conceptual design, a multi-step energy absorption strategy was proposed. The adequate design on each structural part such as energy absorption tube, headstock, and aluminum honeycomb was carried out to find out the controlled crush characteristics.
기존선 틸팅차량 Mcp Car 차체 설계초안의 충돌에너지 흡수특성 고찰
권태수(Kwon Tae-soo),정현승(Jung Hyun-Seung),구정서(Koo Jeong-Seo) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
TTX(Tilting Train Express), which has improved traveling performance on curved track, is being designed in cope with future railway circumstance. Nowadays, in the world, many efforts are focussed on railway safety. Especially, a variety of researches on train crash worthiness have been conducted. As a part of these efforts, some equipments on TTX are designed to reduce fatalities and casualties in crash accidents. This paper introduces impact energy absorbtion characteristics on the initial design of the front end structure. Some comments are made briefly for improvement of initial structural design and future following researches.
기존선 틸팅차량 Mcp Car 차체 설계초안의 충돌에너지 흡수특성 고찰
권태수(Kwon Tae-soo),정현승(Jung Hyun-Seung),구정서(Koo Jeong-Seo),조태민(Cho Tae-min) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
Crashworthy design of trains is now indispensable procedure in modern railway vehicle design for ensuring the safety of passengers and crew. It is now widely recognized that a more strategic approach is needed in order to absorb higher level energy in a controlled manner and minimize passenger injuries effectively. The first design step in this strategic approach is the design of the front end structure(so called HE extremities) to absorb a large part of total impact energy and then the structure of passengers non-accommodation zones(so called HE extremities) is designed to absorb the rest of impact energy. In this paper, the passengers entrance door area is selected as the LE(low energy) extremities and the design of the LEE was carried out. The main part of LEE design procedures is the design of energy absorbing tubes. For this purpose, the several tube candidates are introduced and compared to each others with numerical crash simulation.
권태수(Tae Soo Kwon),황경호(Gyung Ho Hwang) 한국전자통신학회 2016 한국전자통신학회 논문지 Vol.11 No.9
나노 통신 시스템 기술은 통신기술과 나노기술의 융합 분야로서 밀리미터 수준의 통신 모듈 크기에 머물고 있는 현 기술수준을 뛰어넘어 수백 나노미터에서 수십 마이크로미터 이하 단위의 극소형 무선통신 시스템 구현을 가능케 하는 미래 핵심 기술 분야이다. 특히, 최근 제안된 탄소나노튜브의 전기적/기계적 속성을 활용한 신규 극소형 나노 무선 통신시스템 기술은 기존 송수신 구조를 단순히 소형화하는 것이 아니라 구조 자체를 바꾸는 새로운 접근 방식을 제시하고 있다. 따라서, 본 논문에서는 탄소나노튜브(carbon nanotube, CNT)를 활용한 극소형 나노 무선 송수신기 실현 관점에서의 연구현황을 살펴보고 나노 기술과 통신 기술의 융합을 위한 주요 핵심 연구이슈를 제시한다. Nano communication system technologies are future core technologies that facilitate the implementation of tiny wireless communication systems with sizes in the range of hundreds of nanometers to tens of micrometers, which cannot be implemented by current wireless communication system technologies. In particular, novel nano communication system technology, which is based on electrical and mechanical resonance characteristics of carbon nanotube(: CNT), does not simply miniaturize system modules, but suggests a new approach that changes system architectures. Therefore, this paper surveys the state of the art on CNT-based nano communication technologies in aspects of system implementation, and proposes important research issues for convergence of nano and communication technologies.
RGBD 센서를 이용한 실시간 사용자 동작 생성 및 보정
구태홍(Tae Hong Gu),김운미(Un Mi Kim),김종민(Jong Min Kim),권태수(Tae Soo Kwon) 한국컴퓨터그래픽스학회 2017 컴퓨터그래픽스학회논문지 Vol.23 No.5
본 연구는 사용자의 자세를 모니터링하고 수정하기 위해 3D피트니스 프로그램에 사용할 수 있는 몇 가지 기술을 제안한다. 첫 번째로 사용자와 전문가의 레퍼런스 동작간의 차이를 알기위해 두 가지 다른 신체 구조 사이의 리타게팅 기법을 연구했다. 두번째로 복잡한 운동 동작을 표현하는데 생기는 저가형 깊이 센서의 문제인 자기가림(selfp-occlusion) 문제를 예제 데이터베이스와 시간 일관성을 활용하여 해결하였다. 마지막으로 사용자가 취하는 자세가 코치의 자세와 얼마나 다른지 알 수 있도록 피드백 해주는 UI를 제작하였다. 본 논문에서 제안하는 시스템은 사용자의 신체적 차이를 고려하여 사용자의 자세를 평가 한 다음 사용자의 자세에 대한 피드백을 받을 수 있도록 한다. We propose several techniques which can be employed in a 3D fitness program for monitoring and correcting user’s posture. To implement a 3D fitness program, improved reference motion generating techniques and visualizing techniques are necessary. First, in order to understand the difference between the user and the reference movement of a professional, a retargeting method between two different body shapes ate studied. Second, the problem of self-occlusion, which occurs when using a low-cost depth sensor to represent complex motions, is solved by using a sample database and time consistency. The system proposed in this paper evaluates the user’s posture considering the physical characteristics of the user, and then provides. Feedback to the user.
조태민(Cho Tae-Min),권태수(Kwon Tae-Soo),정현승(Jung Hyun-Seung) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
Under light collision accidents, the energy absorption strategy for the coupler and expansion tube of the TTX(Tilting Train Express) initial design is established in the paper. Also, 1 st shearing bolts are designed. When the absorbed energy of the coupler reaches its maximum, the connecting bolts between the coupler and the car body are sheared off not to transmit the impact force to the car body structure. To absorb more energy after the l st shearing bolts work, a expansion tube is designed conceptually and installed at the rear part of the coupler. Using Hyper-Mesh and LS-DYNA, pre/post processing and light collision analyses are preformed, respectively.
PAE-Micropolymer 이중고분자 지력증강제에 의한 NC-SwBKP 시트의 강도 향상
김진수(Jin-Soo Kim),주형욱(Hyeong-Uk Joo),오민석(Min-Seok Oh),권태수(Tae-Soo Kwon),이재훈(Jae-Hoon Lee),조병욱(Byoung-Uk Cho) 한국펄프·종이공학회 2019 펄프.종이기술 Vol.51 No.1
The effects of step-by-step addition of PAE (polyamideamine-epichlorohydrin) and micropolymer dual polymer system on wet web strength and dry strength of NC (nitrocellulose fibers)-SwBKP (softwood bleached kraft pulp) sheets were investigated in terms of the addition ratio of PAE and micropolymer and the dosage of the polymers. It was found that the addition of PAE alone or the step-by-step addition of PAE and micropolymer increased wet web tensile strength and dry strength of NC-SwBKP sheets. The dual polymer strengthening aids consisted of PAE and micropolymer in the ratio of 60:40 and 50:50 showed the highest increase in tensile strength and TEA. In case of bursting strength and compressive strength, it was obtained with the ratio of 70:30 (PAE: micropolymer). Tensile strength was able to be increased to a maximum of 84.1%, TEA was increased 126.4%, bursting strength was increased 73.5%, and compressive strength was increased to a maximum of 132.8%. In addition, the wet web tensile strength of NC-SwBKP sheets was able to be increased to a maximum of 68.7% with the step-by-step addition of PAE and micropolymer in the ratio of 95:5.
PAE-PVA 복합체에 의한 NC-SwBKP 시트의 강도 향상( II )
김진수(Jin-Soo Kim),주형욱(Hyeong-Uk Joo),오민석(Min-Seok Oh),권태수(Tae-Soo Kwon),이재훈(Jae-Hoon Lee),조병욱(Byoung-Uk Cho) 한국펄프·종이공학회 2019 펄프.종이기술 Vol.51 No.1
In order to improve runnability of the production process of combustible cartridge case(CCC), the effects of pre-mixed complexes of polyamideamine-epichlorohydrin (PAE) and polyvinyl alcohol (PVA) on wet-web strength and dry strength of nitrocellulose fibers (NC) - softwood bleached kraft pulp (SwBKP) sheets were investigated in terms of types of PVA. It was found that the addition of PAE or PAE-PVA complexes increased wet web tensile strength and dry strength of NC-SwBKP sheets. In order to improve the wet web tensile strength, the PVA with a higher degree of saponification and with a higher molecular weight had to be chosen for the PAE-PVA pre-mixed complexes. For the dry strength of NC-SwBKP sheets, the PVA with a higher degree of saponification resulted in a higher strength. Concerning the strength improvement of NC-SwBKP sheets, the degree of saponification of PVA was more important factor than the molecular weight of PVA. It is speculated that PAE-PVA pre-mixed complexes improved wet web tensile strength and dry strength of NC-SwBKP sheets by increasing interactions between fibers and by improving formation of sheets.
PAE-PVA 복합체에 의한 NC-SwBKP 시트의 강도 향상( I )
김진수(Jin-Soo Kim),주형욱(Hyeong-Uk Joo),오민석(Min-Seok Oh),권태수(Tae-Soo Kwon),이재훈(Jae-Hoon Lee),조병욱(Byoung-Uk Cho) 한국펄프·종이공학회 2019 펄프.종이기술 Vol.51 No.1
The effects of pre-mixed complexes of PAE (polyamideamine-epichlorohydrin) and PVA(polyvinyl alcohol) on wet web strength and dry strength of NC (nitrocellulose fibers) -SwBKP (softwood bleached kraft pulp) sheets were investigated in terms of the mixing ratio and the dosage of the polymers. It was found that the addition of PAE or PAE-PVA complexes increased wet web tensile strength and dry strength of NC-SwBKP sheets. Especially, a small portion of addition of PVA, i.e ., about 5% to 10% of PVA with 90% to 95% of PAE, was effective for increasing wet web strength and dry strength such as tensile strength and compressive strength. Increased solids content of NC-SwBKP wet webs after wet pressing with increased temperature of the pressing plates improved wet web tensile strength. In addition, improved formation of dry sheets resulted in the increased wet web strength.