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다양한 평가방법을 이용한 원형 노치 CT 시편의 피로수명평가
장동주(Dong-Joo Chang),강주연(Ju-Yeon Kang),허남수(Nam-Su Huh),김진원(Jin-Weon Kim),김종성(Jong-Sung Kim),김윤재(Yun-Jae Kim),김대수(Dae-Soo Kim),김형욱(Hyeong-Wook Kim) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
In the present work, the fatigue life of a round-notched compact tension (CT) specimen has been evaluated using two different fatigue life evaluation methods. One is Design-By-Analysis (DBA) procedure given in ASME B&PV Code, Sec. III and the other is structural stress based approach provided in ASME B&PV Code, Sec. VIII. The fatigue crack initiation tests were conducted using a round-notched CT specimen, which is made of SA312 TP316 stainless steel, under displacement-controlled cyclic condition, and then experimental fatigue initiation life of that specimen was measured. To predict fatigue life of this CT specimen using DBA based approach, 3-D elastic FE analyses were carried out using experimental condition, and fatigue life was predicted based on both design and best-fit fatigue curve of same material suggested in ASME B&PV Code, Sec. II. Moreover, the fatigue life of CT specimen was also investigated using the structural stress based approach. Finally, the fatigue lives predicted either based on DBA procedure or structural stress based approach were compared with experimental results, and the accuracy of such engineering fatigue life evaluation methods was discussed.
김동찬,이윤수,장동주,강남욱,민창기,김용옥 경희대학교 디자인연구원 2003 예술· 디자인학연구 Vol.6 No.1
The aim of this study is to design an open-air theatre to satisfy the demand of students about a place for events in Kyunghee University, Suwon campus. Furthermore, rapid growth of Suwon campus has been requested a suitable place for outdoor amphitheatre. The entire design of Kyunghee University campuses pursuit renaissance style, hence Greek and Roman styles were considered in this study. To make the open-air theater as a useful and distinctive place, the following design elements have to be considered: aesthetic, functional, subjective, symbolic and practical use of the theatre.