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박태근(Park taekeun) 한국퍼실리티매니지먼트학회 2005 한국퍼실리티매니지먼트학회지 Vol.5 No.1
How to select alternatives by using LCC analysis in the beginning stage of building layout is presented through a case-study. The result of this study whose objective is to show guideline applying LCC to practical work is as following. The result of analyzing and comparing architectural planning elements and structural systems by taking examples of a plan and a substitute Indicates that the plan of LCC is 800million won profitable than that at a substitute, which shows large LCC reduction effectiveness at outdoors sun blocking effect and rooftop greening. The disparity of an outer wall-system substitute of the previous estimation that the difference at LCC is remarkable is not larger than expected, thus it might be possible that LCC analysis of the substitute is meaningless in case of considering a performance aspect as a normal element. Accordingly the choice of outer wall material, in case that a design effective aspect is more important than a expense aspects, might be selected by placing a great deal or the design effective aspect.
박태근(Taekeun Park),조원용(WonYong Cho),조철용(Chulyong Cho),심기중(Kijoung Sim),최규재(Gyoojae Choi),유경현(Kyunghyun Ryu) 한국자동차공학회 2008 한국자동차공학회 지부 학술대회 논문집 Vol.2008 No.11
자동차부품의 내구성능은 중요한 성능 중의 하나로 세계 최고수준의 자동차를 만들기 위해서는 반드시 확보해야 할 기술이다. 국산 자동차에 대한 초기품질은 세계 최고 수준에 이르고 있지만, 내구성능은 최하위권에 머무르고 있는 실정이어서 이에 대한 대책 마련이 시급하다. 또한 섀시부품 및 모듈의 내구성능 향상은 자동차 전체의 내구성능 향상을 위해 필수적인 요소라 할 수 있다. 국내 자동차의 내구성능을 향상시키기 위해서는 내구성능에 대한 객관적인 평가기준과 이를 수행할 수 있는 시험기 및 인적자원이 절실히 필요하다. 본 고에서는 자동차 부품 및 모듈의 내구성능향상을 위한 평가 과정과 함께 부품 내구성능 평가장비 및 다년간의 경험 있는 전문인력을 보유하고 관련 부품의 내구성능을 평가하고 있는 군산대학교 자동차부품기술혁신센터(KATIC)의 시험평가장비 및 사례를 기술하였다. 다양한 제품의 성능을 평가하기 위해 시험기 및 시험부자재를 활용하여 시험시스템 구축에 도움이 되도록 할 예정이며, 유사제품 평가에 있어 자동차 부품 내구성능평가 방법과 관련 장비들은 향후 자동차부품 및 일반기계부품 개발업체에서 잘 활용할 수 있을 것이다. Durability of automotive parts is one of the most important factors for the vehicle performance. Vibration in the vehicle cause automotive parts failure such as short circuit, crack, loosened bolt tightening. So the evaluation of vibration property is increased in recent year. But there isn’t still the objective and standardized technology development in domestic, and moreover the requirements of the car makers and customers are more diversity. Enhancement of durability have become the necessary conditions for an automotive parts, and the durability performances under vibration have treated as the top priority. In this paper, we describe the evaluation technology for durability of automotive parts by using the environment vibration tester, which is installed and operated by Kunsan Automotive Technical innovation center.
젖은 노면에서 타이어마모를 고려한 ESC 강인성 분석에 관한 연구
박진욱(Jinuk Park),조태근(Taekeun Cho),권재준(Jaejoon Kwon),홍태욱(Teawook Hong),박기홍(Kihong Park) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In most research and development level for vehicle stability improvement, ESC performance evaluation has been conducted assuming a steady road friction. However, under a wet road condition, the tire performance differs greatly depending on the tread wear, vehicle velocity and water depth. For that reason, this research developed a tire force gain based on tread wear under a wet road condition. A vehicle stability test has been conducted on a HILS system, which includes a CarSim vehicle model with the tire force gain developed in the research and a commercial ESC. Through the HILS, a comparative analysis of existing constant road friction coefficient and the newly developed tire force gain has been carried out, focused on their different influences on the ESC performance.