• Korean Journal of Computational Design and Engineering
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• v.16 no.1
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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.

• Korean Journal of Computational Design and Engineering
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• v.17 no.6
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• pp.387-397
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• 2012

The world has faced with various environmental problems such as climatic change, global pollution, and depletion of natural resources. Conventional economic development continues not only to intensify the magnitude of the problems but also to damage growth potential of future generations. Therefore, recent manufacturers are highly required to accommodate themselves to sustainable development that aims at preventing the loss to the future generations. Moreover, the manufacturers are under heavy pressure from various environmental regulations. This paper proposes green bill of material (Green-BOM) which conforms to the environmental regulations to restructure eco-friendly manufacturing system. Green-BOM is useful for managing green product and process information to satisfy several environmental regulations by recording energy consumption, recycle rate, volatile organic compounds (VOCs), substance information, and so on.

• Journal of the Korean Society for Railway
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• v.10 no.2 s.39
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• pp.195-200
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• 2007

The most important part of RIMS(Rolling Stock Information Maintenance System) project is to construct BOM(Bill of Material). BOM is a listing or description of raw materials, parts, and assemblies that define a product. To construct BOM for RIMS is not a easy task due to several reasons such as data base scale and flexibility, proper integration between physical BOM and functional BOM, interoperability with other systems, etc. In this study we show several principles that Seoul Metro takes to get over the difficulties mentioned above. Based on these principles we propose the methodology Seoul Metro employs to construct BOM efficiently. We also discuss the applicability of BOM in several fields.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.328-332
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• 2006

소비자의 요구가 다양해지면서 많은 기업들이 관리해야 할 제품의 종류가 지난 몇 년간 급격히 늘어났다. 이에 한 제품에 대해 다양한 품목군을 유지해야 할 필요성이 제기되었으며, 전통적인 BOM(Bill of Material)으로 다양한 제품을 표현하기에는 막대한 양의 데이터가 발생하여 관리상의 어려움이 생기며, 데이터의 구성에도 중복성의 문제가 발생하게 되는 등의 한계가 드러남에 따라 다양한 제품군을 자체적으로 반영할 수 있는 Variant BOM의 개념 및 설계 방법론이 주목을 받고 있다. Variant BOM은 동일한 제품군에 대해 일부 구성품을 달리하여 구현한 다양한 제품을 반영하는 BOM의 한 종류로서 산업에서의 활용도가 높은 편이나, 여기에도 데이터의 중복성이나 Variant의 정도가 많아지면 관리에 어려움이 생기는 등의 몇 가지 단점을 내포하고 있다. 본 연구에서는 Variant Bill of Material을 대상으로 기존 연구들의 문제점을 분석하고 이를 해결하기 위하여 BOM에 좌표개념을 도입한 새로운 접근법을 제시한다. 이를 통해 BOM의 Structure와 Part를 분리시켰고, Linking Table을 통해 Structure와 Part를 연결하여 기존의 Variant BOM에 있던 문제들을 해결하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.06a
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• pp.777-778
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• 2009

• Korean Journal of Computational Design and Engineering
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• v.15 no.6
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• pp.449-459
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• 2010

Recently, not only marine PLM (Product Lifecycle Management) system but also an effective outfitting BOM (Bill of Material) management has been attracted by many shipyards. In particular, efficient outfitting design is being one of major issues in shipyards since most of currently designed marine vessels have more complex outfitting system than ever. Furthermore, each outfitting system has huge number of parts that should be arranged based upon the procurement and installation plan. Outfitting BOMs evolve into different forms according to the product development phases during basic design; detail design; and production design. Therefore, it is very difficult to maintain a consistent BOM data during the design phases. In order to express the evolution of product structures and the information of outfitting along the ship design, we suggested UID (Unique ID) code system. The UID (Unique ID) is used in order to create the relationship within evolutional BOMs of each design stage. It utilizes as the procedure of weight calculation for procurement BOM during each design stage. Thereafter, in order to demonstrate suggested outfitting BOM management technique, we suggested a prototype. In the prototype system, suggested features of outfitting BOM are implemented.

• The Journal of Information Systems
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• v.12 no.2
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• pp.129-149
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• 2003

One of the important applications in Enterprise Resource Planning(ERP) systems is the Manufacturing Resource Planning(MRPII) system using Bill of Material(BOM). The manufacturing resource planning determines the quantity and timing of the production or purchase of subassemblies and raw materials needed to support the Master Production Scheduling(MPS). The bill of material is the recipe, a list of the materials needed to make a product. This paper intends to suggest a component-based materials management system using Unified Modeling Language(UML), as an application system for automobile part industry. Applying component based materials management systems designed with UML methodology, we analyzed the workflow and the document on materials management process from production planning to inventory management, and implemented a prototype of efficient materials management system, as a surrogate of existing material requirement planning(MRPI) system. To produce many other assemblies for a automobile part firm, component parts are assembled into subassemblies that are joined to assemble the finished product. Through the system suggested in this study, the level of inventory has cut down and the cost of inventory management has decreased. Also, the development method using UML makes the analysis and design phase to shorten in implementation period of MRPII system. The implementation of materials management system using CBD shows the ease of use in software reuse and the interoperability with corporate Internal information system. The result of applying object-oriented CBD technique is to minimize the risk of life cycle and facilitate the reuse of software as mentioned to limitation of information engineering methodology.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.11a
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• pp.649-652
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• 2006

오늘날 현대사회는 인터넷의 보급으로 지식정보화사회로 급속도로 변화하고 있다. 이전 대량생산시대와는 달리 소비자들의 욕구와 기호는 매우 다양하게 형성되고 있다. 여러 기업들이 생산하는 제품들도 대부분 시기와 계절에 따라 생산율과 판매율이 달라지고 있는 실정이다. 제품들의 생산 및 원가산출, 적정재고량 파악을 위해 기업들은 BOM(Bill of Material)을 작성하여 관리하고 있다. 하지만, 다양하게 변화하는 현대사회에 요구사항을 반영하지 못하고 여러 문제점들을 야기하고 있다. 본 논문에서는 원자재 공급업체에서부터 판매회사까지의 자동발주시스템을 완성하여 보고자 한다.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.43 no.4
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• pp.133-141
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• 2020

Up to date cosmetic OEM/ODM (original equipment manufacturing/original development manufacturing) industry receives attention as a future growth engine due to steady growth. However, because of limited research and development capability, many companies have employed commercial management platforms specialized for large-sized companies; thus, overall system effectiveness and efficiency is low. Especially, MRP (material requirement planning) system introduced originally in 1970s is employed to calculate the requirement of the parts. However, dynamic nature of production lead time usually results in incorrect requirements. In addition, its algorithm does not consider the capability of the production resources. Also, because the commercial MRP system calculates all subcomponent for fixed period, the more goods have subcomponent, the slower calculation is. Therefore, conventional MRP system cannot respond complicated situation in time. In this study, we will suggest a new method that can respond to complicated situations resulting from short lead time and urgent production order in Korean cosmetic market. In particular, a distributed MRP system is proposed, that consists of multi-functional and operational modules, based on the characteristic of the BOM (bill of material). The distributed MRP system divides components (i.e. products and parts) into several fields and decrease the problem size; thus, we can respond to dynamically changed data any time. Through this solution, we can order components quickly, adjust schedules and planned quantity, and manage stocks reasonably. In addition, a prototype of the distributed MRP system is presented in this paper, in which ERP (enterprise resource planning) sever data is associated with an excel spreadsheet via MSsql. System user interface is implemented by a VBA (visual basic for applications) tool. According to a case study, response rate for delivery and planning achievement rate were enhanced about 20%, and inventory turnover was also decreased. Consequently, the proposed system improves overall profit.

• Proceedings of the SAREK Conference
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• 2005.06a
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• pp.173-173
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• 2005