• 한국분말재료학회지
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• 제24권6호
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• pp.494-507
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• 2017

A three-dimensional physical part can be fabricated from a three-dimensional digital model in a layer-wise manner via additive manufacturing (AM) technology, which is different from the conventional subtractive manufacturing technology. Numerous studies have been conducted to take advantage of the AM opportunities to penetrate bespoke custom product markets, functional engineering part markets, volatile low-volume markets, and spare part markets. Nevertheless, materials issues, machines issues, product issues, and qualification/certification issues still prevent the AM technology from being extensively adopted in industries. The present study briefly reviews the standard classification, technological structures, industrial applications, technological advances, and qualification/certification activities of the AM technology. The economics, productivity, quality, and reliability of the AM technology should be further improved to pass through the technology adoption lifecycle of innovation technology. The AM technology is continuously evolving through the introduction of PM materials, hybridization of AM and conventional manufacturing technologies, adoption of process diagnostics and control systems, and enhanced standardization of the whole lifecycle qualification and certification methodology.

• International journal of advanced smart convergence
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• 제10권3호
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• pp.72-80
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• 2021

Metaverse is an immersive 3D virtual environment, a true virtual artificial community in which avatars act as the user's alter ego and interact with each other. If we do not manage the hype for the metaverse, which has recently been receiving a surge in interest, the metaverse will fail to cross the chasm. In this study, to provide stakeholders with insights for the successful introduction and growth of the 3D immersive next-generation virtual world, metaverse, we analyzed user-side interest, media-side interest, and research-side interest. For this purpose, in this study, search traffic, news frequency and topic, and research article frequency and topic were analyzed. The methodology and results of this study are expected to provide insight for the stable success of metaverse transformation and the coexistence of the real world and the virtual world through hyper-connection and hyper-convergence.

• 한국분말재료학회지
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• 제27권3호
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• pp.256-267
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• 2020

Metal additive manufacturing (AM) technologies are classified into two groups according to the consolidation mechanisms and densification degrees of the as-built parts. Densified parts are obtained via a single-step process such as powder bed fusion, directed energy deposition, and sheet lamination AM technologies. Conversely, green bodies are consolidated with the aid of binder phases in multi-step processes such as binder jetting and material extrusion AM. Green-body part shapes are sustained by binder phases, which are removed for the debinding process. Chemical and/or thermal debinding processes are usually devised to enhance debinding kinetics. The pathways to final densification of the green parts are sintering and/or molten metal infiltration. With respect to innovation types, the multi-step metal AM process allows conventional powder metallurgy manufacturing to be innovated continuously. Eliminating cost/time-consuming molds, enlarged 3D design freedom, and wide material selectivity create opportunities for the industrial adoption of multi-step AM technologies. In addition, knowledge of powders and powder metallurgy fuel advances of multi-step AM technologies. In the present study, multi-step AM technologies are briefly introduced from the viewpoint of the entire manufacturing lifecycle.

• 경영정보학연구
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• 제19권2호
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• pp.95-113
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• 2017

최근 국가경제와 기업의 경쟁력이 불안정한 글로벌 환경에서, 정부는 4차 산업혁명이라고 불리는 스마트공장 구축사업을 중소중견 제조기업 대상으로 적극적으로 적용추진을 하고 있다. 스마트공장이란 ICT(Information Communication Technology)와 생산공정의 융합으로 설비와 시스템간의 통합과 지식 기반의 최적화된 판단으로 제품을 자동 생산하는 체계이다. 본 연구는 기업의 경쟁력을 높이기 위해 성공적인 스마트공장의 추진을 위한 최고경영자의 의지, 정부지원, 외부 컨설팅 그리고 조직참여가 미치는 영향에 대해서 살펴보았다. 연구모형을 통한 실증연구를 하기 위해 스마트공장 구축을 완료하였거나 진행 중인 중소기업을 대상으로 설문지를 배포하여 회수된 101부의 설문지를 분석하였다. 실증분석 결과, 기업의 글로벌 경쟁력 확보를 위한 스마트공장 성공적 구현에 있어서 조직의 참여도가 가장 큰 영향을 미치는 것으로 파악되었고, 정부지원, 외부 컨설팅 그리고 최고경영자 의지 순서로 영향을 미치는 것으로 나타났다. 따라서 본 연구에서는, 기업의 경쟁력 제고에 가장 큰 영향을 미치는 스마트공장 구축을 성공적으로 실현하기 위해 여러 가지 관점으로 구분하여 도출하였고 이를 검증하였다.