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정일호,서상원,장봉기,Jung, Il Ho,Seo, Sang Won,Jang, Bong Ki 한국품질경영학회 2017 품질경영학회지 Vol.45 No.3
Purpose: The purpose of this study is to analyze quality control strengthening pilot project in development stages of weapon systems which ensures zero-defect. In order to achieve that, we propose collaboration support system between related organizations. Methods: First, we analyze how quality control methods has been developed from reviewing the preliminary study in commercial and defense industry. Then, we suggest improvement plans for quality control in defense industry and propose a pilot study which able to improve the recognized problems. Results: The results of this study ensures the participants in defense industry recognize the importance of quality control and form a consensus by sharing a case study. Finally, we propose the standardized work process by utilizing manual and manpower dispatching. Conclusion: As a result, this study clarifies the scope and role of relevant organizations to achieve the defense quality assurance in the total life cycle(TLC). Also, this paper guides the collaboration system between the relevant organization which differs from the commercial industry currently divided into development-production-quality.
유한요소법을 이용한 냉각홴의 진동 및 간섭에 관한 연구
서종휘(Seo, Jong-Hwi),송하종(Song, Ha-Jong),박태원(Park, Tae-Won),김주용(Kim, Joo-Yong),정일호(Jung, Il-Ho) 한국소음진동공학회 2004 한국소음진동공학회 논문집 Vol.14 No.9
A CFA(cooling fan assembly) is composed of a fan, motor and shroud, which is at the back of the automotive radiator. By forcing the wind to pass, the CFA controls the cooling performance of the radiator. The noise and vibration of the CFA may be primarily due to the resonance between the CFA and engine. The Interference among the fan, shroud and radiator by deformation is considered when the CFA is designed. In this paper, in order to analyze the structural vibration of the CFA for automobiles, a finite element model of the CFA is established by using a commercial FEM code. After the finite element modeling, the natural frequencies and the mode shapes are obtained from the FE analysis. The natural frequencies are obtained from the vibration test as well. Then, the results of the vibration test are compared with those of the FE analysis. The natural frequencies obtained by experiment have a great similarity to the results from FE model. We have confirmed the validity of the FE model and verify the structural safety for the resonance. The stress and displacements are obtained from FE analysis. We have confirmed the safety for the interference and failure.
파라메트릭 기법을 사용한 로봇링크 설계변경의 일괄처리 적용연구
박태원,문하경,정일호,서종휘,김혁,최용원,최재락,Park Tae Won,Moon Ha Kyung,Jung Il Ho,Seo Jong Hwi,Kim Hyuk,Choi Yong Won,Choi Jae Rak 한국시뮬레이션학회 2005 한국시뮬레이션학회 논문지 Vol.14 No.1
We developed the module of the software that robot designers can perform their work faster and more easily. The parametric modeler is founded on the virtual robot design program. The virtual robot design program is the powerful software which may be used to solve various problems of robot kinematics and dynamics. The parametric modeler in the software we developed is that all the positions of joints and links are changed automatically when the designer changes one joint or one link in the robot system. Without parametric method, robot-designers must change all the positions of connected joints and links. It might become time-consuming. However, it is very efficient for designers to use the method of batch-processing in performing design-changes of robot-links using the parametric modeler.
옥상 뜬바닥 구조공법의 접착제 최적 배합비 산정을 위한 부착성능 실험
서유현 ( Yu Hyun Seo ),박준모 ( Jun Mo Park ),김옥규 ( Ok Kyue Kim ),정일기 ( Il Gi Jung ) 한국건축시공학회 2016 한국건축시공학회 학술발표대회 논문집 Vol.16 No.1
Waterproofing methods for applying to roof-top in the building are various, but it is not enough to development,, which are simplified and low-cost method for old building. Especially, these buildings have not only a low insulation,, but a disadvantage for energy. A floating floor method is necessary for this. This study performs an experimentt about bonding capacity of complex panel for waterproofing and heat insulation. The bond strength experiment is based on KS F 4716, and it is considered by bond mix proportion about panel and slab.