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Yang, Y.S.;Bae, J.G.;Park, C.G.
- Transactions of Materials Processing
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- v.16 no.4 s.94
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- pp.323-328
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- 2007
The residual stress in axial direction of the steel wires has been measured by using a method based on the combination of the focused ion beam(FIB) milling and digital image correlation(DIC) program. The residual stress is calculated from the measured displacement field before and after the introduction of a slot along the steel wires. The displacement is obtained by the digital correlation analysis of high-resolution scanning electron micrographs, while the slot is introduced by FIB milling with low energy beam. The experimental procedures are described and the feasibilities are demonstrated in steel wires fabricated with different conditions. It reveals that the tensile residual stress is formed in all steel wires and this is strongly influenced by the fabrication conditions.
https://doi.org/10.5228/KSPP.2007.16.4.323 인용 PDF KSCI

김영석;오충완;최재승;송지헌;이장희;이형규;박근형
- Journal of the Korean Institute of Electrical and Electronic Material Engineers
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- v.16 no.7
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- pp.584-592
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- 2003
6H-SiC MOSFETs and digital ICs have been fabricated and characterized. PMOS devices are fabricated on an n-type epilayer while the NMOS devices are fabricated on implanted p-wells. NMOS and PMOS devices use a thermally grown gate oxide. SiC MOSFETs are fabricated using different impurity activation methods such as high temperature and newly proposed laser annealing methods. Several digital circuits, such as resistive road NMOS inverters, CMOS inverters, resistive road NMOS NANDs and NORs are fabricated and characterized.
https://doi.org/10.4313/JKEM.2003.16.7.584 인용 PDF KSCI

Kim, Yun-Ho;Lee, Myung-Moo
- The Journal of the Korea Contents Association
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- v.22 no.2
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- pp.44-57
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- 2022
Fablab is a global network of digital fabrication facilities. Fablab is a digital workshop for individual manufacturing. In addition, Fablab is a next-generation digital infrastructure that connects education, training, R&D and production. The Fablab is a facility lab that makes the products you want, and it is a space where users-led products or services are discovered for the community. Furthermore, through various citizen-led projects, it is playing the role of innovation that changes the region and society. In this study, we examine the operating conditions of Fablabs in Korea and Japan (Fablab Seoul, Fablab Busan, Fablab Kamakura and Fablab Kitakagaya). It also explores the business model and sustainable development potential of each fablab. To this end, first, we compare and analyze the use of fablabs in both countries. Second, the purpose of the fablabs of both countries is analyzed. Third, we analyze the business models that the fablabs of both countries are taking for sustainable development through Lean Canvas. Based on the results obtained through case analysis of both countries, we make suggestions for the development of fablabs in Korea.
https://doi.org/10.5392/JKCA.2022.22.02.044 인용 PDF KSCI HTML

서정훈
- Proceedings of the Korean Society of Precision Engineering Conference
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- 2003.06a
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- pp.58-61
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- 2003
제품이 요구하는 기능성 소재(금속, 합금, 세라믹 등)를 사용하여 컴퓨터에 저장되어 있는 3차원 형상의 기하학적 자료(digital data of 3D subjects)로부터 직접 3차원 형상의 제품 또는 제품생산에 필요한 툴(tools)을 매우 빠른 시간 내에 제작할 수 있는 신개념의 쾌속 직접금속성형기술(laser-aided direct metal fabrication tech.)임.(중략)
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