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AHP를 이용한 최적의 네트워크 보안 솔루션 선정에 관한 분석 : 공공기관 및 학내 망 IPS 도입을 위한 연구
소상우,김우제 서울産業大學校 2005 논문집 Vol.54 No.1
정보 보안이란 조직 내의 중요한 정보를 스파이, 비양심적인 내부자, 호기심 많은 내부자, 인터넷 상의 악질적인 해커로부터 보호하는 모든 정책 및 시스템을 말한다. 본 논문에서는 정보 보안 솔루션을 설정하는데 있어 AHP 기법을 이용하여 체계적으로 평가할 수 있는 방법을 제시하소 사례로 검증하였다. 정보보안 솔루션을 선정하기 위한 모모형에서는 기술성 요인, 신뢰성 요인, 편리성 요인등이 검토되었으며. 이를 다시 세부항목으로 분류하여 평가하였다. 사례검증에서는 6개사의 정보 보안 솔루션에 대하여 2개사의 정보 솔루션이 우수한 것으로 나타났으며, 이에 대한 민감도분석을 실시하였다.
DFSS 기법을 적용한 알루미늄 스페이스 프레임 차체의 통합 최적설계 연구
소상우(Sang-Woo So),김민수(Min-Soo Kim),허승진(Seung-Jin Heo) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_3
An ASF(Aluminum Space Frame) B.I.W is optimized for reducing the weight while satisfying DFSS constraints such as static stiffness, vibration, low-and high-speed crash performances. In order to solve this multidisciplinary DFSS constraints design problem for the ASF B.I.W. Kriging model based SAO is applied.
소상우(Sang-Woo So),황현태(Hyun-Tae Hwang),이종현(Jong-Hyun Lee),최흥원(Hung-Won Choi) 한국생산제조학회 2011 한국생산제조학회지 Vol.20 No.2
In order to survive in turbulent and competitive markets, automotive part manufacturers try efforts to develop new manufacturing technologies for ultra-lightweight, high-intensity and environmentally-friendly parts. Most of front lower arm is manufactured by welding process between upper- and lower panel which are produced by press stamping process. Because lower arm mounted on the cross member parts is one of the important complementary parts. So, to improve safety and lightweight of these parts, hybrid technologies are used in this paper. As hybrid technologies are applied to be front sub-frame, rear cross member and other chassis parts as well as front lower arm, the 20% lightweight has been achieved compared with existing steel parts.
손동일,소상우,최동혁,김대일 한국복합재료학회 2019 Composites research Vol.32 No.5
As demand of light weight in the automotive industry has increased, the cowl cross member has been investigated using various methods to change the material. Conventionally, a cowl cross member has been made of steel and aluminum, but recently researchers tested multi-material such as aluminum and plastic. We studied a new model of the cowl cross member made of composite and non ferrous materials. For products with a high degree of freedom in design, generally, the method of topology optimization is advantageous and for the partial bracket part of the cowl cross member had a degree of freedom in the design, a topology optimization is appropriate. Considering the characteristics of the cowl cross members, we need research to minimize the weight while having the performance of noise, vibration and harshness(NVH). Taking the mounting status of the product into consideration, we used an assembly model to optimize the cowl cross member. But this method took too much time so we considered simple cowl cross member assemble conditions using the direct matrix input method(DMI) with the Craig-Bampton Nodal Method. This method is capable of considering the status of the assembly without assembling the model, which reduced the solving time and increased the accuracy comparison with a cowl cross member without DMI.
황현태,소상우,김종도,Hwang, Hyun-Tae,So, Sang-Woo,Kim, Jong-Do 한국재료학회 2011 한국재료학회지 Vol.21 No.7
Currently, there are two main issues regarding the development of core technologies in the automotive industry: the development of environmentally friendly vehicles and securing a high level of safety in the event of an accident. As part of the efforts to address these issues, research into alternative materials and new car body manufacturing and assembly technologies is necessary, and this has been carried out mainly by the automotive industries. Large press molds for producing car body parts are made of cast iron. With the increase of automobile production and various changes of design, the press forming process of car body parts has become more difficult. In the case of large press molds, high hardness and abrasive resistance are needed. To overcome these problems, we attempted to develop a combined heat treatment process consisting of local laser heat treatment followed by plasma nitriding, and evaluated the characteristics of the proposed heat treatment method. From the results of the experiments, it has been shown that the maximum surface hardness is 864 Hv by the laser heat treatment, 953 Hv by the plasma nitriding, and 1,094 Hv by the combined heat treatment. It is anticipated that the suggested combined heat treatment can be used to evaluate the durability of press mold.
황현태,황재현,소상우,이하용,김종도 한국표면공학회 2010 한국표면공학회 학술발표회 초록집 Vol.2010 No.11
최근 사출금형은 플라스틱 소재의 기능향상을 위해 유리섬유의 첨가량을 증가시켜 강도 및 내충격성을 얻는 등 다양한 변화를 하고 있어 금형의 고경도, 내마모를 요구하고 있다. 이에 대형 사출금형에 대한 고출력 다이오드 레이저를 이용한 국부열처리기술 개발을 하였다. 본 연구를 통하여 최대경도는 레이저열처리 온도 1050℃, 레이저열처리 속도 2mm/sec에서 701Hv로 관찰 되었다. 이는 모재의 경도값 약 318Hv에 비해 약 2.2배 상승한 값이다. 또한 열처리 전·후의 변형량 및 열처리부의 미세조직변화를 관찰 하였다.