• 한국CDE학회논문집
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• 제16권3호
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• pp.187-196
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• 2011

Generally, BOM (Bill of Material) means a part list which is needed to manufacture or assemble a product or part. During manufacturing processes, BOM is inevitably required for most of enterprise processes such as design, procurement, production planning/control, resource planning, and financial works. Every manufacturing industry uses many kinds of BOM's that are adjusted to the requirement of functions of their work division. Moreover, BOM evolves in different forms according to the product development phases such as conceptual design; function design, detail design, and production design because it is necessary to use different product structures to keep product data generated throughout the lifecycle of a product. This includes all data and information related to the all the product development phases. Shipbuilding works also are processed and controlled based on BOM. However, effective maintenance of ship outfitting BOM data is getting difficult as the amount and complexity of data have increased due to variety and long lifecycle of ship. For the effective management of outfitting BOM data, two aspects must be considered. One is how to classify numerous BOMs type and the others how to display BOMs. So this study suggests a method to classify BOM types and propose two categories - Structure BOM, Display BOM. Base on this result, we propose the integrated ship outfitting BOMs model and analysis outfitting BOMs.

• 한국CDE학회논문집
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• 제16권1호
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• pp.41-51
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• 2011

Both enterprise information systems and CAD utilizes the BOM (Bill of Material) as the means of collaborative integration during the product design and production since the BOM has been commonly used for design, production planning, procurement, and production works. Therefore, BOM can be the referential data when it expresses not only the part lists but also product information required by product development process. Outfitting design is one of major design works in marine vessel design since marine vessels have various outfitting systems and huge number of parts. Also, the outfitting BOM has the evolutional forms that change from the initial design to the production design. In order to express the product information and part list in the enterprise BOM and the evolutional BOMs in each lifecycle, enterprise BOM of outfitting that consists of structure BOM and display BOM is suggested. Thereafter, we have developed the prototype of enterprise BOM in which some features of the outfitting BOM are implemented.

• 한국산학기술학회논문지
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• 제14권3호
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• pp.1033-1039
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• 2013

제품수명주기가 짧아지고 고객의 니즈가 다양화되고 있는 글로벌 시장에서 보다 빠른 신제품 설계와 개발을 위해서는 정보시스템의 도움이 필요하다. 본 논문에서는 자동차산업의 경영 스피드 향상을 위한 방안으로 제품에 관한 정보를 전사적으로 통합하는 Enterprise-BOM의 기본모델을 제시하였다. 여기에는 세가지 BOM의 종류를 포함하며, 내부 주요 데이터 구조설계를 진행하여 전사 일원화 관리를 지원할 수 있도록 자동차 산업의 차종, 등급, 옵션, 색사양 주문 사양 등의 주요 속성에 대한 데이터를 체계화하였다. 이를 통해 사양변화와 개발변경이 빈번한 환경하에서 신속하고 유연성 있는 개발이 가능할 것이다.

• 한국멀티미디어학회논문지
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• 제8권3호
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• pp.421-427
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• 2005

BOM(Bill Of Materials: 부품소요명 세서 )은 제품구조를 명백하게 해주는 기술문서라 하며, 완성품과 하위 제품, 부품, 원자재등과의 관계와 구조를 나타내기 위해 사용된다. 본 논문에서는 철제진열대 완제품 생산에 소요되는 소요부품 산출을 위한 BOM시스템을 구현하였다. 본 BOM 시스템 구현 후 적용기업의 변화로는 (1) 상품에 대한 소요 부품 산정 기간이 2주일에서 2일로의 단축과, (2) 부품소요량 산출의 정화도 향상, (3) 기업의 조직구조가 축소가 있었다.

• 반도체디스플레이기술학회지
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• 제17권3호
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• pp.10-16
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• 2018

In silicon crystalline PV (Photo Voltaic) industry, PV module or panel electric power is directly related to the companies' profit. Thus, many PV companies have invested and focused on R&D activities to get the higher module power. The main BOM (Bills of Material) on the module consists of PV solar cell, ribbon, EVA (Ethylene-Vinyl Acetate copolymer), glass and back sheet. Based on consistent research efforts on enhancing module power using BOM, there have been increase of around 5 watt per module every year as results. However, there are lack of studies related to enhancing accuracy of measurement. In this study, the enhancing on the metrology is investigated and the improvement shows actually contribution to company's profit. Especially, the measurement issues related to heat and to quasi state of bandgap diagram by EL(Electro Luminescence) are described in this study.

• Journal of Information Display
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• 제2권3호
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• pp.39-43
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• 2001

The glass compositions of $PbO-SiO_2-B_2O_3$ system and $P_2O_5-PbO-ZnO$ system for the transparent dielectric materials for front panel and $P_2O_5$-ZnO-BaO and $SiO_2-ZnO-B_2O_3$ for the reflective dielectric materials for back panel of PDP (Plasma Display Panel) were investigated. As a result, transparent dielectric materials for front panel showed good dielectric properties, high transparency, and proper thermal expansion matching to soda lime glass substrate. And the reflective dielectric layers for back panel were prepared from two series of parent glass and oxide filler. It was found that these glassceramics are useful materials for dielectric layers in PDP device, as they have similar thermal expansion to soda-lime glass plate, high reflectance, and low sintering temperature. In particular, the addition of $BPO_4$ and $TiO_2$ as fillers to $SiO_2-ZnO-B_2O_3$ system is considered to be the most effective for acquiring good properties of lower dielectric layer for PDP device.

• 한국자동차공학회논문집
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• 제13권5호
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• pp.163-170
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• 2005

Urban transit is a complex system that is combined electrically and mechanically, it is necessary to construct maintenance system for securing safety accompanying high-speed driving and maintaining promptly. Expert system is a computer program which uses numerical or non-numerical domain-specific knowledge to solve problems. In this research, we intend to develop the expert system which diagnose failure causes quickly and display measures. For the development of expert system, standardization of failure code classification system and creation of BOM(Bill Of Materials) have been first performed. Through the analysis of failure history and maintenance manuals, knowledge base has been constructed. Also, for retrieving the procedure of failure diagnosis and repair linking with the knowledge base, we have built RBR(Rule Based Reasoning) engine by pattern matching technique and CBR(Case Based Reasoning) engine by similarity search method. This system has been developed based on web to maximize the accessibility.

• 한국산업융합학회 논문집
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• 제26권4_2호
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• pp.629-637
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• 2023

This study aimed to evaluate the effect of post-curing equipment and time on the flexural strength of 3D printing resins produced by a liquid crystal display(LCD) printer. The three 3D printing resins(DENTCA Denture Teeth, DT; C&B 5.0 hybrid, CH; C&B Permanent A2, CP) were divided into four groups according to post-curing time(10 min and 30 min) and equipment with or without vacuum treatment. For the three-point flexural strength test and biaxial strength test were prepared by method according to ISO 10477, ISO 6872, respectively. Flexural strength was measured with universal testing machine. Comparison between post-curing time of each post-curing equipment was analyzed by independent sample t-test and Mann-Whitney U test(α=.05), and comparison between groups according to each 3D printing resin was performed by Kruskal-Wallis test and post-hoc by Bonferroni-Dunn test(α=.05). The flexural strength of the resin post-curing under vacuum was higher than that of the resin post-curing in air. In the comparison according to the post-curing time, in the case of the post-curing equipment without vacuum, the 30 minute curing time showed significantly higher flexural strength than the 10 minute curing time, except for the biaxial flexural strength of CH(P<.05). In the post-curing equipment with vacuum, the three-point flexural strength of all 3D printing resins(DT, CH, and CP) showed a higher value at 30 minute curing time than at 10 minute curing time.

• 한국측량학회지
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• 제25권6_2호
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• pp.645-651
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• 2007

일반적으로 수치지도의 등고선은 항공사진을 해석 및 수치 도화기 상에서 입체시 하여 동일한 높이의 점들을 3차원으로 측정하고 도화하여 생성되므로 등고선 도화는 작업량이 많고 도화사의 주관적인 판단과 경험에 의해 결정된다. 그러므로 지형의 형태와 특성을 묘사하는 등고선의 도화는 도화사의 풍부한 경험이 요구된다. 또한 국내의 수치지도는 수치지형모델(DTM) 데이터를 포함하고 있지 않으므로 DTM이 필요한 경우 대부분 등고선 데이터로부터 간접적으로 생성한다. 본 연구에서는 지형의 특성에 대한 중요한 정보를 포함하고 있는 model key point를 등고선에서 추출하고, 이를 기반으로 지형적 특성을 고려하여 DTM의 격자간격을 효율적이고 융통적으로 조절하여 정량적 및 정성적인 측면에서 최적의 데이터를 이용하여 DTM을 생성하는 방법을 제안한다. 이를 위하여 progressive sampling 기법을 적용하여 지형이 복잡하여 기복이 큰 산악지역에는 격자간격을 작게하고 지형이 완만한 지역은 격자간격을 상대적으로 크게한다. 그러므로 고정된 하나의 격자간격을 사용하지 않고 지역별로 서로 다른 격자간격을 가지는 다중격자 DTM을 생성하였다. 다중격자 DTM은 용량이 최적화되어 계산량이 적고, 신속한 디스플레이 할 수 있는 장점이 있다.