http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
백운봉(U. B. Baek),박종서(J. S. Park),박휘립(H. R. Park),김동진(D. J. Kim),최병호(B. H. Choi) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
Gear is the one of most widely used device for transmitting power. In the design of gear ensuring reliability, bending strength of tooth root, pitting resistance of contact surface, and scoring strength are considered to determine transmitting power of gear. In 1892, W. Lewis designed tooth of gear by simplifying it as cantilever beam to calculate bending strength of gear tooth. But the bending strength is the fatigue phenomenon related to crack initiation in tooth root. This paper presents high cycle fatigue properties of carburized SCM420H steel which is widely used as the material for gear and failure analysis of gear are also performed.
SB 410 보일러 및 압력용기용 탄소강 강판의 재질열화 연구
백운봉(U. B. Baek),박종서(J. S. Park),남기웅(K. W. Nam),김호연(H. Y. Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
In spite of frequent defect in industrial boilers, life assessment or diagnostic method for them has not been studied. In this research, SB410 carbon steel used in industrial boilers is simulated with artificial aging heat treatment. To do qualitative life assessment, differences in micro-structures and hardness of SB410 by the degradation time are studied. In addition, variation in material properties by aging was observed with the tensile test at room temperature and 179℃ and changes in ductile to brittle transition temperature was observed with the charpy impact test performed at several test temperature.
구조물 신뢰성 설계 및 평가를 위한 재료 물성 데이터베이스 시스템
이완규,허용학,백운봉,박휘립,정인현,안병욱 한밭대학교 생산기반기술연구소 2002 생산기반기술연구소 논문집 Vol.2 No.1
Information on material property may be considerably important in design and evaluation based on reliability in structures including industrial facilities and civil structures. In this study, a database system including the information on properties of the structural materials was developed. The material property constructed in this system includes physical properties, tensile properties, impact properties, hardness properties, fatigue properties, creep properties, fracture properties, and corrosion properties. This system contains 145,000 numeric data of materials property for 600 kinds of metals. In this system designed as user-friendly system, the data can be retrieved through internet and shown in both numeric and graphical forms.