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성민석(Min-Seok Sung),나의균(Eui-Gyun Na),염덕준(Deuk-Joon Yum),이상근(Sang-Keun Lee) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The purpose of this study is to obtain the data related with the relationship between AE signal characteristics and mechanical behaviors and to examine the residual stress at weld region. Residual stress at weld region was obtained using a hole drilling method and AE test was carried out under four point bending load. Among AE signals, counts and signal strength are used to find out meaning of destructive mechanics. Relationships between plastic zone size and AE counts were investigated. Residual stress of the weldment and PWHT specimens consist of positive and negative values respectively. Regardless of the specimens, as the plastic zone size at notch tip grows, cumulative AE counts increases until some distance. AE signals were absent within an elastic region, regardless of the specimens. Maximum signal strength of the weldment was the highest, followed by PWHT specimen and basemetal.
벨라리움 활용을 통한 도심형 열린 공간의 장소성에 관한 연구 -도심 복합시설 소니센터와 가든파이브의 사례 비교를 중심으로-
성민석(Sung, Min-Seok),임종엽(Lim, Jong-Yup) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.1
This thesis describes the concept of Placeness in urban open spaces and the role that the Velarium can play in creating a sense of place in such areas. Placeness is the quality that makes a place unique and meaningful to people, and it is an important factor in creating a sense of community and fostering a common place experience in urban areas. The Velarium, a retractable canopy used in ancient Roman amphitheaters, can provide shelter in urban open spaces, creating a more comfortable environment for people to gather and engage with their surroundings. By comparing Sony Center and Garden Five, this study aims to identify the factors that contribute to a successful placeness in urban open spaces and to provide insights into how the Velarium can be used as architectural elements.