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혼합물 실험계획과 다수 반응변수 최적화를 통한 속경화 초저온접착제 개발 사례
변재현 ( Jai Hyun Byun ),서판석 ( Pan Seok Seo ),신지은 ( Ji Eun Shin ),이륜규 ( Lyun Gyu Lee ),염지현 ( Ji Hyun Yeom ) 한국품질경영학회 2014 품질경영학회지 Vol.42 No.4
Purpose: In this paper we present a case study of developing fast curing adhesives for insulation material of LNG carriers using an extreme vertices design with four mixture components. Three material properties are considered . shear strength, viscosity, and tensile strength. In the optimization experiment, we used hardness instead of tensile strength due to shortage of specimens. Methods: We employ four-factor extreme vertices design with 19 runs and desirability function approach for simultaneously optimizing three responses. After selecting optimal condition of the mixture components, we do confirmation experiments to verify the reproducibility of the optimal condition under manufacturing circumstance. Results: Simultaneous optimal condition for the three responses, that is, shear strength, viscosity, and harness is obtained. At the optimal condition, confirmation experiments are executed in manufacturing circumstance. The variation for the shear strength is not satisfactory, which is due to the variation of the humidity. Conclusion: At the optimal condition three material properties are satisfactory. To reduce the variability for the shear strength, robust design is needed.
변재현(Jai-Hyun Byun),김현수(Hyun-Soo Kim),박성현(Sung-Hyun Park),정선양(Sun-Yang Chung),정성석(Sung-Suk Chung) 지속가능과학회 2012 지속가능연구 Vol.3 No.2
지속가능과학은 지구와 인류의 지속가능성을 유지하기 위한 학문으로서 태동하였다. 지속가능과학을 통하여 지속가능 이슈를 다루기 위해서는 이 분야의 인재양성을 통하여 지속가능과학을 전파하고 지속가능한 세계를 구현할 수 있어야 하겠다. 이를 위하여 생태계의 수용 능력 안에서 미래 세대가 자신들의 필요를 충족시킬 수 있는 능력을 훼손하지 않으면서 현재의 필요를 충족시키기 위한 교육 과정을 수립하는 것이 필요하다. 본 논문에서는 문제해결 능력이 있는 인재 양성을 목표로 국내 대학의 학사과정, 석사과정, 박사과정 등으로 구분하여 교육과정을 개발하여 제안하고자 한다. Sustainability science came about as a new academic discipline to help maintaining the earth and the world. To deal with the sustainability issue through the sustainability science, it is necessary to develop human resources and let them spread the science and help realize the stainable world. For this purpose we are to establish the curriculum for the sustainability science to satisfy current needs for humanity without sacrificing future capacity for supporting next generations. In this paper we propose curriculums for undergraduate, graduate programs for the sustainability science for the purpose of training human resources with the problem-solving ability in this field.