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4M 위험성평가 기법을 이용한 앗차사고의 효과적인 발굴기법
서성화 ( Seong Hwa Seo ),원종일 ( Jong Ii Weon ),우홍식 ( Heung Sik Woo ) 한국안전학회(구 한국산업안전학회) 2012 한국안전학회지 Vol.27 No.5
In this study, a new technique for detecting near miss using 4M risk assessment method is suggested. Until now, the safety education with instances of near miss has just been progressed in most industrial settings, without any systematic guideline. By menas of appling 4M risk assessment method, the organized technique, which could effectively manage the fundamental prevention of industrial accident in advance, is developed. The organized technique of near miss-management suggested in this study will take an effective role in basically expanding the application of risk assessment method, as well as in contributing the activity of zero-accident as a safety guideline in hazardous workshops.
우홍식,김수용 동국대학교 경주대학 1997 東國論集 Vol.16 No.1
In order to obtain more realistic fracture resistance curve, many researchs are currently underway to introduce new parameter and to quantify the constraint effect. The objective of this paper is to investigate the relationship between the crack tip constraint effect (specimen size, specimen thickness, plane size, crack length ratio and side groove) and the fracture resistance curve. In this paper, fracture toughness tests were performed with various parameters. Test results show that the J-R curve is increased with increase in the plane size and decrease in the crack length and the J-R curve is decreased due to the side groove of specimen. In addition to the effects of the crack length and the plane size on the J-R curve are significant while the effects of specimen thickness and the specimen size on the J-R curve are insignificant.