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건설장비 개발과정에서 신뢰성성장관리 적용방법에 대한 연구
소영국(Young-Kug So),전영록(Young-Rok Jeon),류병진(Byeong-Jin Ryu) 한국신뢰성학회 2013 신뢰성응용연구 Vol.13 No.3
This study considers reliability growth management as the excellent method for construction equipment development with the effect on decreasing COPQ(Cost of Poor Quality Cost) of new products. MIL-HDBK-189A(1981) and RADC-TR-84-20(1984) standards provide a general concept of reliability growth management including to reliability growth test, models and FRACAS(Failure Reporting and Corrective Action System). There is no study how to apply reliability growth management to construction equipment(or machine) development. This paper propose the method to apply it to construction equipment development process from the reliability target setting for developing products to launching them at market. It is expecially showing how to set target reliability for new developing equipment and the development risk to reach the reliability target in detail.
신뢰성성장시험 중 발생한 신뢰성성장률 변화를 고려한 고장 평가과정 및 평가방법 개선에 대한 연구
소영국(Young-Kug So),전영록(Young-Rok Jeon),류병진(Byeong-Jin Ryu) 한국신뢰성학회 2014 신뢰성응용연구 Vol.14 No.2
Reliability test is focusing to detect the unexpected reliability failure and solve them for the high quality of products. The test data should be used to assess and project the current level of interesting product reliability and so it is very important to have the accurately assessing methodology with test data. There are two type of trend for test data as constant and changing one during testing and this paper shows the difference in the assessing results of these two cases. There is less information how to define the existence of reliability growth rate changing and calculate the parameters of the reliability growth models to make an accurate assessment with such condition, so i established the process and mathematical model to calculate the parameters at such condition to make reliability growth curve with high Goodness of Fit. I validated the new method with the data made from Monte Carlo Simulation and case from Demko (1993). Even the assessed result with the new methodology may be different with the case by case because of very diversity in test condition and testing product quality, but the process and method founded in this research can be applied to any case using Duane and AMSAA model for their test data assessment. I also present the evaluation method to see the effectiveness with new one which is a conventional knowledge and not popular to use, so it is possible to compare the results with the newly presented and conventional method for better business decision.
'공동주택단지 조성을 위한 지구단위계획 수립기준'에 대한 전문가집단 간 인식 차이 분석
김진우,오세규,류영국,Kim, Jin-Woo,Oh, Se-Gyu,Ryu, Yong-Guk 한국주거학회 2012 한국주거학회 논문집 Vol.23 No.2
This study aims to understand differences in what specialists groups think important to establish district units plans. The result of the study is as follows. There were differences in thinking by specialists on standards and procedure of establishment, characteristics of the plans. For the standards of establishment, there was a remarkable difference in thinking on the importance. In the search for the importance on the establishment procedure, the groups of architects, construction firms, researchers and professors & instructors thought listening to opinions of residents important and public officials considered review by the City Planning Council important. In the survey on characteristics of district units plans, the most respondents answered 'plans leaded by private sectors focusing on residents' and 'plans to practice for actualization of urban plans'. Public officials and researchers answered that district units plans should be practical plans for actualization of urban plans with strong characteristics of work. The groups of architects, construction firms and professors/instructors mostly thought that private sector leaded plans focusing on residents as characteristics of district units plans. It was understood that construction firms think that the parts related to conditions for construction across overall standards of establishment, procedure of establishment are important. The specialists who think that the plans should be private sector leaded plans focusing on residents on which the residents' opinions are reflected were the groups of architects and professors/instructors.