무수말레산과 에틸렌 메타크릴산 공중합체를 이용한 폴리프로필렌의 개질

김진훈,김석훈,홍원표,김준호,Kim, Jin-Hoon,Kim, Seok-Hoon,Hong, Won-Pyo,Kim, Joon-Ho 한국섬유공학회 2008 한국섬유공학회지 Vol.45 No.3

Polypropylene (PP) was modified by grafting of maleic anhydride(MAH) and blending of ethylene-methacrylic acid (EMAA) copolymer in biphenyl solution at $170^{\circ}C$. The films were examined by $^{13}C$ NMR, FT-IR, contact angle measurement and adhesion test in various MAH and EMAA copolymer compositions. The transition temperatures of the films remained constant irrespectively of MAH and EMAA copolymer compositions. From NMR and FTIR spectra the grafting of MAH onto PP backbone was checked. With contact angle measurements, it could be confirmed that the grafting of MAH and adding of EMAA copolymer onto PP made its surface more polar. Through the adhesive force evaluations, the value of peeling strength gave the maximum at the 1wt% of MAH and 0.5 wt% of EMAA copolymer.

선박 평형수 처리 시스템에서 센서 데이터의 원격 통신

김진훈,김주만,김병철,Kim, Chin-Hoon,Kim, Joo-Man,Kim, Byoung-Chul 한국인터넷방송통신학회 2014 한국인터넷방송통신학회 논문지 Vol.14 No.6

선박 평형수는 해양 유기체와 함께 타 지역의 바다에 배출되며, 이는 해양 생태계 교란을 야기했다. 이 환경적 위험 요인을 제거하기 위하여 IMO에서는 모든 선박에 선박 평형수 처리 시스템(BWTS)의 장착을 의무화 하였다. 모니터링 시스템은 여러 해양에 흩어져 있는 선박으로부터 수집된 BWTS의 센서 정보를 분석함으로써 BWTS의 고장을 진단하고 예측한다. 본 논문은 위성 통신 비용을 고려한 BWTS 원격 모니터링 시스템의 통신 프레임웍에 대한 설계 및 구현을 제시한다. 본 연구에서는 랩뷰 프로그램에 의하여 안전하고 비용 절감을 위한 통신 모듈을 구현하였는데, 수집된 센서 정보는 RIO에서 수행되는 랩뷰 모듈을 통하여 암호화되고 압축되어 육지 통신 서버로 전송되며, 모니터링 가능하도록 복호화를 한다. 결과를 검증하기 위하여 수집된 센서 데이터를 모니터링 서버가 사용하기까지의 과정을 모니터링 하는 실험 모듈을 제작하였고, 모든 경위의 데이터 형식에 대하여 20번의 실험을 수행한 결과 기능성과 신뢰성에서 우수함을 증명하였다. The ballast water may be discharged into another sea area with marine organisms, it caused problems to disturb the marine ecosystem. So, in order to remove these environmental risk factors, the IMO has mandated the installation of BWTS to the all ships. Our monitoring system diagnose and predict a failure of BWTS by analyzing the sensor information of BWTS collected from which the ships scattered in the ocean of several. This paper presents the design and implementation of communication modules for BWTS remote monitoring considering the satellite communication charge fee. In the our study, we implemented the safety and cost-saving communication modules by LabVIEW program. The collected sensor informations is encrypted and compressed by LabVIEW modules running on RIO. Then they will be transfer to the land server and will be decrypt to enable monitoring in the land server. For the verification, we build the test modules which can verify from collecting the sensor data to consuming them in the monitoring server. We carried out 20 times for the data pattern in all of case. So, we verified the excellent functionality and reliability through the experimental result.

상수도의 저용해성 액체 정량투입 방안 연구

김진훈,박종호,Kim, Jin-Hun,Park, Jong-Ho 한국유체기계학회 2005 한국유체기계학회 논문집 Vol.8 No.6

통합평가 계획수립을 위한 시스템적 접근 프로세스

김진훈,신광복,유원희,구동희,Kim, Jin-Hun,Sin, Gwang-Bok,Yu, Won-Hui,Gu, Dong-Hui 한국시스템엔지니어링협회 2003 시스템엔지니어링워크숍 Vol.1 No.-

The paper aims at presenting a systematic approach process and a method of requirement validation and system verification. Validation is applied during concept development to ensure conceptual validity, requirements validity, and design validity. Verification work is applied subsequent to the design work on test articles and early production items to produce evidence that the design solutions do, in fact, satisfy th requirements. In this paper, we present a requirements validation model and a system verification model. This models are applied to the development of TTX(Tilting Train Express)system with systems engineering tool, CORE.

QFD를 활용한 통합된 개발프로젝트 정의 방법 연구

김진훈,박영원,Kim, Jin Hoon,Park, Young Won 한국시스템엔지니어링학회 2012 시스템엔지니어링학술지 Vol.8 No.1

For the definition of development project, this paper proposes an integrated design model for the project 3P's(Products, Process, and People) architecture solutions balancing the originating requirements as well as the design targets of product, process, and IPDT. The model is suggested to develop the integrated design method with trade-off analysis and alternatives evaluation of products, processes, and IPDT using QFD.

수리온 체계개발에서의 시스템엔지니어링 적용사례

김진훈,이동욱,Kim, Jin Hoon,Rhee, Dong Wook 한국시스템엔지니어링학회 2014 시스템엔지니어링학술지 Vol.10 No.1

Systems Engineering application focused on requirement definition and management for SURION System Development Project is described in this paper. To perform the development process effectively based on systems engineering processes; Requirements Definition, Design Review, Configuration Management, Quality Assurance, Data Management, are applied in this project. In this processes, the Stakeholder's Requirements are transferred to Specifications verified with design reviews, prototyping inspections, and integration tests. All engineering data, especially verification plan & results are recorded, and traced to each requirements of system specification in Surion database. Therefore, it could be assured that all requirements of specification are evaluated and verified successfully in Surion Project.

암종별 산출량 변화 평가를 통한 수압파쇄기법의 타당성 연구

김진훈,김형수,석희준,Kim Jin-Hoon,Kim Hyoung-Soo,Suk Hejun 한국지하수토양환경학회 2005 지하수토양환경 Vol.10 No.6

수압파쇄 기법은 암반 내에 파쇄를 수압을 이용하여 생성하거나 확장시키는 기술로서, 이렇게 생성된 파쇄대는 지반 안에서의 흐름의 통로 역할을 하며, 지하수가 자유롭게 흐르도록 한다. 본 연구에서는 최근에 수압파쇄 기법이 수행된 12개 관정 결과를 바탕으로 암종별 특성을 분명하게 파악하기 위하여 7개의 관정에서 추가로 수압파쇄를 실시하였다. 총 19개소에 대해 화성암(9개소), 변성암(4개소), 퇴적암(6개소)으로 대분하여 암종에 따른 수압파쇄의 가능성을 평가하였으며, 시험결과 화성암은 평균 $93.4\%$, 변성암은 평균 $103\%$, 퇴적암은 $42.2\%$의 산출량 증가를 보였다. 본 연구에서 수행된 수압파쇄의 적용은 암종별로 차이를 보이지만, 전반적으로 관정의 산출량을 증대시키는 효과적인 방법임을 확인하였다. Hydraulic fracturing is guaranteed to create or enlarge fracture, so the hydraulically created fracture acts as a conduit in the rock, allowing the groundwater to flow more freely through the fracture system. In a recent study, it showed that 12 wells where hydraulic fracturing was performed increased well production. However, it was estimated not to present representation by rock type due to not enough wells. Therefore, this study was performed to clarify the application of hydraulic fracturing at 19 water wells. Rocks were divided into igneous rocks (9 sites), metamorphic rocks (4 sites), and sedimentary rocks (6 sites) to evaluate representative features. As a result, the average of well yield increases $93.4\%$ in the igneous rocks, $103\%$ in the metamorphic rocks, and $42.2\%$ in the sedimentary rocks. Accordingly, hydraulic fracturing presented in this study provides an effective method for increasing well production

가스터빈 블레이드 전연면 내부 유로 요철 형상에 따른 열전달 특성 연구

김진훈(Jinhun Kim),김정주(JeongJu Kim),방민호(Minho Bang),김태현(Taehyun Kim),박희승(Hee Seung Park),조형희(Hyung Hee Cho) 대한기계학회 2020 大韓機械學會論文集B Vol.44 No.5

끝이 둥근 형태의 삼각 유로에서 요철에 의한 열전달 특성을 확인하고, 열전달 향상 방안에 대하여 연구를 진행하였다. 채널 단면적은 정삼각형에 끝을 120° 각도로 필렛을 준 형태이며, 레이놀즈수는 30,000으로 고정하였다. 요철의 각도는 45°, 90°, 요철 높이와 수력 직경의 비(e/Dh)는 0.079, 요철 간 거리와 요철 높이의 비(p/e )는 8이다. 일반적인 삼각 채널과는 다르게 끝이 둥근 형태인 삼각 채널의 경우 전연면에서 요철에 의한 압력장 변화로 유동이 가속되면서 열전달이 상승하는 것을 확인할 수 있었다. 따라서 압력장의 변화가 큰 수직 요철이 경사 요철에 비해 전연면 부근에서 열전달이 더 높게 나타났다. 또한 전연면의 열전달을 향상시키기 위하여 수직 요철 사이 핀을 추가한 경우와 수직 요철의 길이를 연장하였을 경우에 대해 연구하였으며, 열전달 성능 계수가 각각 4%, 9% 증가하였다. This study investigated heat transfer characteristics and improvement in a triangular channel with a rounded leading edge and rib turbulator. The channel cross section has a 120° fillet on the leading edge of the equilateral triangle. The Reynolds number based on hydraulic diameter is 30,000. The angles of the rib turbulator are 45° and 90°. The rib height to hydraulic diameter ratio is 0.079 and the rib pitch to height ratio is 8. In a triangular channel with a large curvature of leading edge, the changing pressure field caused by the rib turbulator accelerates the flow and increases heat transfer. The 90° rib showed higher heat transfer than 45° rib on the leading edge region. To further improve the heat transfer, the effect of a pin added between the ribs and rib length extension was studied. As a result, the thermal performance factor was enhanced by 4 % and 9 %, respectively.

GPS 전파 간섭시 수심조사선박 위치 편의량 해석

김진훈(Kim, JinHoon),남정민(Nam, Jeongmin),김중헌(Kim, Joongheon),김인호(Kim, Inho),송동섭(Song, Dong Seob) 한국측량학회 2016 한국측량학회 학술대회자료집 Vol.2016 No.4

기질 및 성격특성과 알코올의존의 관련성

김진훈(Jin-Hun Kim),김길숙(Gil-Sook Kim),오동렬(Dong-Yul Oh),김종우(Jong-Woo Kim) 한국중독정신의학회 2002 중독정신의학 Vol.6 No.2

Objectives:The purpose of this study was to investigate the difference between alcoholic men and normal controls on Temperament and Character Inventory (TCI) scores. Methods: We compared 40 male alcoholic patients who were admitted to Seoul National Hospital with 40 normal controls. All subjects were assessed by drinking pattern questionnaires, Seoul National Hospital Alcoholism Screening Test, and TCI. Results: 1) Alcohol dependent patients showed higher Novelty-Seeking and lower Self-Directedness scores than normal controls. 2) Self-Directedness score was lower in early-onset than in late-onset patients. 3) Persistence score was lower in violent than non-violent patients. Conclusion:The findings of this study suggest that alcoholic dependent patients have higher Novelty-Seeking score and lower Self-Directedness score than normal controls, and that those with specific clinical characteristics such as early-onset and violence have close relationship with a specific TCI profile.