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수명주기가 긴 제품의 설계정보관리를 위한 다층 제품정보 모델링 방안
이재현(Jaehyun Lee),서효원(Hyowon Suh) (사)한국CDE학회 2012 한국CDE학회 논문집 Vol.17 No.4
This paper proposes a multi-level product modeling framework for long-term lifecycle products. The framework can help engineers to define product models and relate them to physical instances. The framework is defined in three levels; data, design model, modeling language. The data level represents real-world products, The model level describes design models of real-world products. The modeling language level defines concepts and relationships to describe product design models. The concepts and relationships in the modeling language level enable engineers to express the semantics of product models in an engineering-friendly way. The interactions between these three levels are explained to show how the framework can manage long-term lifecycle product information. A prototype system is provided for further understanding of the framework.
배상윤(Sang-Yoon Bae),서효원(HyoWon, Suh),제임스모리슨(James R. Morrison) (사)한국CDE학회 2016 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2016 No.동계
Because of complexity of plant modularization process, decision making is one of the essential issue. However, there are a few studies have been conducted about cost breakdown structure and cost optimization for plant modularization and construction field. This research analyze plant modularization process and reveal that the existing EPC (Engineering, Procurement, Construction) process can be decomposed to EPFTC (Engineering, Procurement, Fabrication, Transportation, Construction) for modeling modularization process, and construct the cost breakdown structure based on that process. Finally, this research also propose the cost optimization model based on constructed cost breakdown structure.
정민규(Minkyu Jeong),서효원(Hyowon Suh),이희정(Heejung Lee),이재현(Jae Hyun Lee) (사)한국CDE학회 2022 한국CDE학회 논문집 Vol.27 No.4
In enterprises operating large-scale equipment, such as plant enterprises, maintenance workers must quickly and accurately find and understand the information required in the equipment maintenance documents to perform maintenance tasks effectively. If the equipment maintenance documents exist in each file for each equipment and the sentence expression constituting each document is ambiguous, it will interfere with the effective performance of the maintenance, and it leads to loss of the company. In order to solve these problems, attempts have been made to efficiently manage equipment maintenance documents and fault documents and extract key information or maintenance knowledge. However, they have the limitations of not quantitatively presenting the effectiveness of the proposed method or considering the relationship between the entities. Therefore, in this paper, we propose a method for effective maintenance knowledge extraction by extracting entities for equipment, failures, and solutions from equipment maintenance documents through named entity recognition, and further building a set of relationships between individual entities using dependency parsing. Equipment maintenance documents used in domestic plant enterprises were used to show validation of the proposed approach, and 74.3% of correct relations were found for the test sentences.
홍종성(Jongsung Hong),서효원(Hyowon Suh) (사)한국CDE학회 2016 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2016 No.동계
Outcomes at the product development phase can be registered and managed as unstructured data format such as documentation, drawings, emails etc. Except for the information which are formally authorized and uploaded into the as well defined system, still very much authorized engineering information remains as unstructured data and they are securely stored in the system’s repository. This project introduces the procedures of structuring contextual data from unstructured data as well as the methods how contextual data created from unstructured data can be more effectively used for product manufacturing. Currently, the methods suggested in this document have not been applied in company actual works. However, this project was motivated to find the most appropriate and effective methods that can be applied in general industries and to suggest a realistic, performable, and sharable solution.
전상민(SangMin Jeon),서효원(HyoWon Suh),정면규(MyeonGyu Jeong) (사)한국CDE학회 2015 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2015 No.하계
Most engineers in manufacturing industries routinely handle large volumes of engineering documents that are stored in PLM system. The challenge for extracting knowledge from the engineering documents is to quickly gather the right information from unstructured text in engineering documents into a structured knowledge. Since context is very important information to understand knowledge in unstructured text, it should be extracted and reflect to organize a structured knowledge. Several studies to extract knowledge from unstructured text focus on extracting concepts and their relationships using matching between terminologies in text and concepts in a predefined ontology. They did not extract context information from unstructured texts. This paper undertakes the in-depth analysis of failure analysis documents collected from a manufacturing company and provides a method for failure knowledge extraction based on failure context, which enables to prevent potential failure in a design process by securing the failure knowledge. Two-layered model, failure-context and product-component layers, is also developed to exploit both failure knowledge and relevant design information through a series of proposed linguistic operations.
지식기반 3D 통합모델링을 활용한 모바일하버 시뮬레이션 플랫폼
이승신(Seungsin Lee),서효원(Hyowon Suh) (사)한국CDE학회 2010 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2010 No.1
Mobile harbor is a novel type harbor system that can be moved out to the outside of general harbor to allow large container ships to unload cargo without having to come into port. The mobile harbor system is developed to reduce the time ships are required to remain at harbor and to build harbors capable of receiving large ships regardless of depth and tides. However, the mobile harbor consists of many complex components such as stabilized crane system at the sea, transfer unit, high speed container handing system at the quay, etc. and they must be evaluated as a integrated system for optimal construction of the mobile harbor. In this paper, efficiently integrated 3D simulation platform for mobile harbor is developed with Siemens NX and Plant Simulation which are well known general purpose PLM software, for evaluation of the various performances of the mobile harbor. To show effectiveness of the developed simulation platform, the one feasible arrangement of the mobile harbor from various alternatives is selected and simulation result is carried out. The simulation result shows that the developed simulation platform can be adopted to evaluate performances of the mobile harbor.
정면규(MyeonGyu Jeong),서효원(HyoWon Suh) (사)한국CDE학회 2016 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2016 No.동계
The concern with plant O&M (Operation and Maintenance) solutions has been growing for the last several years to increase continuous operation and to save operation cost. In order to maximize the effect of O&M applications, sensor-based integrated virtual plant platform is necessary. We therefore propose sensor-based virtual plant platform with virtual · simulation technology. In terms of sensor based plant O&M, key functions can be classified into four functions: process management, instrument management, structural safety management and maintenance guide. We discuss the outline of each functions and interconnectivity of them with simple UI of integrated SW. Finally, application plan of smart virtual plant platform in the virtual plant operation room with several monitors is proposed.