• Journal of Korean Society of Industrial and Systems Engineering
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• v.45 no.4
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• pp.174-179
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• 2022

Companies are making design changes by improving product quality and function to succeed while meeting customer requirements continuously. Design changes are changing the product BOM's amount, item, specification, and shape while causing a change in the product's structure. At this time, the problem of inventory exhaustion of parts before design change is a big topic. If the inventory exhaustion fails, the pieces before the design change become unused and are discarded, resulting in a decrease in asset value, and the quality cost of the design change affects the company's profits. Therefore, it is necessary to decide to minimize quality costs while minimizing waste inventory costs at the time of application of design changes. According to the analysis, priorities should be prioritized according to urgency because the quantity of items before the design change affects the applied lead time.

• 한국경영정보학회:학술대회논문집
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• 2008.06a
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• pp.563-570
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• 2008

PDM(Product Data Management)은 제품의 개념정의에서부터 연구개발, 생산, 서비스에 이르는 전 과정에 걸쳐 관련된 모든 제품 정보를 협업을 통해 생성, 관리, 사용하도록 지원하는 일련의 프로세스를 의미한다. PDM 시스템 구축의 일차적 목적은 제품 관련 데이터의 정합성을 확보하여 데이터 관리의 효율성을 제고하고, 업무프로세스의 개선 및 표준화로 부가가치 창출에 기여하는 것이다. 특히 제품의 연구 개발 프로세스 전반에 걸친 제품정보의 공유를 통해 연구개발 부서와 기타 업무부서간 협업적 업무 프로세스의 구축을 촉진함으로써 R&D 경쟁력 확보에 기여할 수 있다. 본 연구에서는 의료기기 제조업체의 PDM 구축사례를 소개함으로써 R&D 경쟁력 확보를 위한 PDM의 효용성에 대해 논의하고자 한다. 본 연구의 사례에서는 PDM 시스템 구축을 통해 BOM 관리, 도면 및 설계변경 관리, 문서 관리 등에 소요되는 시간의 $30\sim70%$ 가량을 단축하였으며, 연간 $3\sim5%$ 가량의 재료비 절감이라는 효과를 거두었다. 본 사례연구의 결과가 PDM 도입 시 실질적인 지침을 수립하는데 도움이 될 뿐만 아니라 효과적인 PDM 구축절차 수립에 기여할 것으로 기대한다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.04a
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• pp.310-313
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• 2000

본 연구에서는 STEP 표준을 고려하지 않고 설계·개발된 기존의 PDM 시스템이 CAD 시스템에서 생성된 STEP 포맷의 제품 데이터를 활용할 수 있도록 하기 위한 데이터 변환 방법을 제시하고자 한다. 이를 위하여 AP203 응용 프로토콜의 분석과 함께 스키마 매핑을 위한 방법과 절차를 제시하였다 그리고, 이를 바탕으로 AP203 스키마와 ‘중소기업형 PDM 시스템'의 DB 스키마간에 매핑을 설계하였다. 또한, CAD 시스템에서 생성된 제품의 Assembly 구조를 PDM 시스템의 BOM 구조로 변환하기 위한 알고리즘을 함께 제시하였으며, 제품의 product structure를 중심으로 데이터 변환을 위한 STEP-to-DB 변환기 프로토타입을 개발하였다. 그리고, CAD 시스템에서 생성된 제품 데이터에 대한 STEP 스키마 구조와 AP203 응용 프로토콜 스키마와의 구조적 차이를 비교·분석함으로서 CAD 시스템에서 생성된 STEP 포맷의 제품 데이터 구조에 대해 엔지니어링 데이터로서의 구조를 갖도록 하기 위한 기초 자료를 제공하였다.

• IE interfaces
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• v.14 no.4
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• pp.348-355
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• 2001

This paper suggests a detailed design of APS(Advanced Planning & Scheduling) system using the DBR (Drum-Buffer-Rope) which is a finite capacity scheduling logic of TOC(Theory of Constraints). Our design is composed of four modules; Network, Buffer, Drum and Subordination. The Network module defines the Product Network which is built from BOM and routings. The Buffer module inserts the Buffers into the Product Network. The Drum module describes detail procedures to create Drum Schedule on the CCR(Capacity Constraint Resource). The Subordination module synchronizes all non-constraints to the constraints by determining the length of Rope. This design documented by ARIS.

• Journal of the Society of Naval Architects of Korea
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• v.42 no.6 s.144
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• pp.686-697
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• 2005

The current challenge with which most shipyards are faced is to reduce the design time and the time-to-delivery benefits of new information technologies such as ERP, APS, and SCM system. These technologies should integrate the information that flows in the enterprise wide activities. First of all we should maintain control of ship design and product data such as bill of material, product structure, drawing, 30 modeling and manufacturing information for the integration. The product data management (POM) system copes with these requirements. All the product data is stored in POM database and vaults in a structured manner and all the changes of product data are monitored, controlled and recorded. This study discusses how POM system can be implemented in shipyard. The procedure is surveyed to apply a POM system for the ship design data management. This study also presents several examples in order to make a practical guidance for ship POM implementation. Proposed studies can be useful for shipyards planning to adopt POM systems in enterprise wide manner.

• Journal of Ocean Engineering and Technology
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• v.26 no.2
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• pp.58-67
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• 2012

Recently, both the integration of product data during design and production and the effective management of information during full lifecycles have attracted attention from shipyards and ship owners as a result of recycling regulations and a desire for efficient operations. Generally, PLM (Product Lifecycle Management) supports a collaborative environment during the BOL (Beginning of Life) stage, while an ALM (Asset Lifecycle Management) system provides all of the information required to maintain, overhaul, and discard/recycle all or part of a vessel during the MOL (Middle of Life) and EOL (End of Life) stages. The main goal of this paper is to suggest the fundamental configuration of a PALM (Product Asset Lifecylce Management) system and a method that can be used to utilize a marine vessel's lifecycle information during the MOL, emphasizing the maintenance information during the middle of life. The authors also suggest a PALM system configuration in which lifecycle information can be collected by a PEID (Product Embedded Information Device) integrating a microcomputer, sensors, and wireless network communication. Through a prototype PALM system, the suggested features and PALM system configuration are implemented.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2005.11a
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• pp.311-314
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• 2005

Supply chain optimization is one of the most important components in the optimization of a company's value chain. This paper considers the problem of designing the supply chain for a product that is represented as an assembly bill of material (BOM). In this problem we are required to identify the locations at which different components of the product arc are produced/assembled. The objective is to minimize the overall cost, which comprises production, inventory holding and transportation costs. We assume that production locations are known and that the inventory policy is a base stock policy. We first formulate the problem as a 0-1 nonlinear integer programming model and show that it can be reformulated as a 0-1 linear integer programming model with an exponential number of decision variables.

• Journal of the Korean Society of Systems Engineering
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• v.2 no.2
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• pp.5-10
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• 2006

It was difficult that each enterprise clearly defines PDM in domestic vehicle manufacturing industry and decides investment for the successful foundation in the mid-90s. Also, it was true that most investments to success repeat a process of trial and error even if they decide and propel. Now, PDM is not a luxurious system. Because the company is operated well even if it manages business manually, the company may not be interested in PDM introduction. Problem is business efficiency and product competitiveness. Now, we must consider that introduction and drive of PDM became necessary as instrumentation for Re-Engineering of business process concerning innovative dimension restructuring that is not reorganization, development and improvement of business for enterprise's survival. This indicates that now is when level of infra construction for an IT technology dominates competitiveness of business management. Enterprise can expect effects of PDM by implementation that manages Intellectual Properties through administration of knowledge and information finally.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.1870-1873
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• 2004

The objective of this study is to investigate the possibility of chemical process synthesis purely based on mathematical programming when given an objective, feed conditions, product specifications, and model equations for available process units. A method based on a state space approach is proposed, and applied to an example problem with a reactor, a heat exchanger, and a separator. The results indicate that a computer can automatically synthesize an optimal process without any heuristics or expertise in process design provided that global optimization techniques are improved to be suitable for large problems.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.716-719
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• 1995

Although design process is a creative work, it includes a lot of iterations. Statistics show that about 15 to 40 percent of the total design activity is spent on time-consuming retrieval of technical informations such as standard part, handbook, engineering equation,previous design and so on. On the other hand, product structure and parts specifications change with the design process, which also need to be traced accordingly. The BOM, design history, and all the relecant technical informations can be managed can be efficiently within a unified framework called configuration. This paper presents a prototype of a configuration manager which is a part of the engineering data management system for machine tools.