• Title, Summary, Keyword: Integrated Design Process

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A Study on the Integration of Systems Engineering Process and Systems Safety Process in the Conceptual Design Stage to Improve Systems Safety (시스템 개념설계 단계에서 안전도 향상을 위한 시스템공학 및 시스템안전 프로세스의 통합에 관한 연구)

  • Kim, Young-Min;Lee, Jae-Chon
    • Journal of the Korea Safety Management & Science
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    • v.14 no.3
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    • pp.1-10
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    • 2012
  • Recently, we have witnessed the definitely negative impacts of large-scale accidents happened in such areas as atomic power plants and high-speed train systems, which result in increased fear for the potential danger. The problems appear to arise due to the deficiency in the design of large-scale complex systems. One of the causes can be attributed to the design process that does not fully reflect the safety requirements in the early stage of the system development because of the substantially increased complexity. In this paper, to enhance the systems safety an integrated process is studied, which considers simultaneously both the system design process and system safety process from the beginning of the system development. In the conceptual system design phase an integrated process model is constructed by analyzing the activities of both the system design and safety processes. As a case study example, an inner city train system is described with the application of the developed process. The computer simulation of the example case is followed by the result discussed. The results obtained in the paper are expected to be the basis for the future study where a detailed process and its associated activities can be developed.

Development of an Integrated Design System Using Service-Oriented Architecture Concept (서비스 지향 구조 개념을 적용한 통합 설계 시스템 개발에 관한 연구)

  • Lee J.K.;Park S.W.;Bang J.S.;Lee H.M.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.958-961
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    • 2005
  • This paper introduces the development of an integrated design system using Service-Oriented Architecture. The system is proposed and being developed based on several advanced technologies, such as multi-agents, Internet/web Service, workflow, database and is aiming to provide the successful fulfill our target of integrating personnel, design activities and engineering resources along a predefined engineering design project (workflow) during product development process. By using SOA concept, the system tries to separates the engineering process into the engineering knowledge and the usage of engineering tool. Consequently, the computing resources in organization can be fully utilized and thus the cost can be reduced. The system is being designed and developed on the base of JADE (Java Agent DEvelopment Framework).

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On the System Development for the railway vehicle dynamic analysis based on integrated process environments (프로세스 통합 환경 기반의 철도차량 동역학 해석시스템 구축)

  • Huh Young-Cheol;Han Hyung-Suk;Lee Jae-Kyung;Kim Byung-Hyun
    • Proceedings of the KSR Conference
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    • pp.140-145
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    • 2005
  • The dynamic performances of railway vehicles, such as ride comfort, stability and safety, have the opposite characteristics of response each other according to design changes of suspensions. For this reasons, it is necessary that multidisciplinary engineers join in design processes of the suspensions so as to satisfy the requirements of dynamic performance with design constraints. Sometimes iterative dynamic analyses are required so many times during the design processes. In this paper, the development of integrated process environments and the dynamic analyses of railway vehicles based on the environments are presented. Using agent and wrapping technologies, process managements about the work process and design parameters were set up under the distributed computing environments. Also, dynamic analyses on the sample railway vehicle were carried out and the efficiency and improvement in future work were discussed as results.

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Offshore Process FEED(Front End Engineering Design) Method for Integrated Process Engineering (통합 프로세스 엔지니어링을 위한 해양 프로세스 기본 설계 방법론)

  • Hwang, Ji-Hyun;Roh, Myung-Il;Cha, Ju-Hwan;Lee, Kyu-Yeul
    • Journal of the Society of Naval Architects of Korea
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    • v.47 no.2
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    • pp.265-277
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    • 2010
  • In this study, an offshore process FEED(Front End Engineering Design) method is systematically established to perform integrated process engineering for topsides systems of LNG FPSO(Floating, Production, Storage, and Off-loading unit) based on the concepts and procedures for the process FEED of general offshore production plants. First, various activities of the general process FEED engineering are summarized, and then the offshore process FEED method, which is suitable for application to all types of offshore oil and gas production plants, is proposed. Second, an integrated process engineering environment is built based on the proposed FEED method. Finally, the integrated process engineering environment is applied to topsides systems of an LNG FPSO in order to verify the validity and applicability of the proposed FEED method. As a result, it is shown that the proposed FEED method can be applied to the process FEED engineering of FPSOs and moreover will be able to contribute to perform successful offshore projects in the future.

Advanced Design Synthesis Process for Rapid Aircraft Development (신속한 항공기 개발을 위한 통합 개념설계 프로세스에 대한 연구)

  • Park, Seung Bin;Park, Jin Hwan;Jeon, Kwon-Su;Kim, Sangho;Lee, Jae-Woo
    • Journal of the Korea Society of Systems Engineering
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    • v.9 no.2
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    • pp.83-90
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    • 2013
  • Integrated aircraft synthesis process for rapid analysis and design is described in this paper. Data flow between different analysis fields is described in details. All the data are divided into several groups according to importance and source of the data. Analysis of design requirements and certification regulations is carried out to determine baseline configuration of an aircraft. Overall design process can be divided into initial sizing, conceptual and preliminary design phases. Basic data for conceptual design are obtained from initial sizing, CAD and geometry analysis. Basic data are required input for weight, aerodynamics and propulsion analyses. Results of this analysis are used for stability and control, performance, mission, and load analysis. Feasibility of design is verified based on analysis results of each discipline. Design optimization that involves integrated process for aircraft analysis is performed to determine optimum configuration of an aircraft on a conceptual design stage. The process presented in this paper was verified to be used for light aircraft design.

Research of Integrated System Design Process for Concurrency Design Activity (동시적 업무수행을 위한 통합된 시스템 설계 프로세스 연구)

  • Kim Jin-Hoon;Park Young-Won
    • Journal of the Korean Society for Quality Management
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    • v.32 no.3
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    • pp.141-152
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    • 2004
  • This study describes process and method to establish concurrent and/or sequential schedule planning for the system design process of the EIA632 standard. For this purpose, the study suggest Process and method that are context analysis of standard process, interface definition from activity decomposition, integration of related activities, and definition of concurrent and/or sequential work flow. The proposed process and method will contribute to minimize time loss that is emerged from activities iteration.

Adaptive location of repaired blade for multi-axis milling

  • Wu, Baohai;Wang, Jian;Zhang, Ying;Luo, Ming
    • Journal of Computational Design and Engineering
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    • v.2 no.4
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    • pp.261-267
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    • 2015
  • Free-form blades are widely used in different industries, such as aero-engine and steam turbine. Blades that are damaged during service or have production deficiencies are usually replaced with new ones. This leads to the waste of expensive material and is not sustainable. However, material and costs can be saved by repairing of locally damaged blades or blades with localized production deficiencies. The blade needs to be further machined after welding process to reach the aerodynamic performance requirements. This paper outlines an adaptive location approach of repaired blade for model reconstruction and NC machining. Firstly, a mathematical model is established to describe the localization problem under constraints. Secondly, by solving the mathematical model, localization of repaired blade for NC machining can be obtained. Furthermore, a more flexible method based on the proposed mathematical model and the continuity of the deformation process is developed to realize a better localization. Thirdly, by rebuilding the model of the repaired blade and extracting repair error, optimized tool paths for NC machining is generated adaptively for each individual part. Finally, three examples are given to validate the proposed method.

A study on the non-integrated use of BlM (비통합적 BlM의 적용 가능성에 관한 연구)

  • Choi, Jong-Chon;Kim, Khil-Chae
    • Journal of The Korean Digital Architecture Interior Association
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    • v.8 no.2
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    • pp.21-28
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    • 2008
  • The main purpose of this paper is to find the phase-in of BIM adoption by focusing on the level of integration. BlM should be aimed at integration and collaboration of all parties furnishing design and construction services to increase the productivity. Therefore, the degree and depth of integration for project collaboration is very important to BlM design process. One of the key advantages of full integration is that is to facilitates the development of detailed information much earlier in the entire design process to improve collaboration among stakeholders. Such integrated use is the ultimate method, but even so, it's not the precondition of BlM. One of the key advantages of relatively low integration as a transition phase is to adopt the BlM earlier than full integration. Such transitional and non-integrated BIM can also reduce the possibility of trial and error in BlM adoption. Therefore, this paper focused on non-integrated use of BlM as a substitute of full IPD by analyzing obstacles in BIM adoption.

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A Construction Method of Expert Systems in an Integrated Environment

  • Chen, Hui
    • Proceedings of the Korea Inteligent Information System Society Conference
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    • pp.211-218
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    • 2001
  • This paper introduces a method of constructing expert systems in an integrated environment for automatic software design. This integrated environment may be applicable from top-level system architecture design, data flow diagram design down to flow chart and coding. The system is integrated with three CASE tools, FSD (Functional Structure Diagram), DFD (Data Flow Diagram) and structured chart PAD (Problem Analysis Diagram), and respective expert systems with automatic design capability by reusing past design. The construction way of these expert systems is based on systematic acquisition of design knowledge stemmed from a systematic design work process of well-matured developers. The design knowledge is automatically acquired from respective documents and stored in the respective knowledge bases. By reusing it, a similar software system may be designed automatically. In order to develop these expert systems in a short period, these design knowledge is expressed by the unified frame structure, functions of th expert system units are partitioned mono-functions and then standardized components. As a result, the design cost of an expert system can be reduced to standard work procedures. Another feature of this paper is to introduce the integrated environment for automatic software design. This system features an essentially zero start-up cost for automatic design resulting in substantial saving of design man-hours in the resulting in substantial saving of design man-hours in the design life cycle, and the expected increase in software productivity after enough design experiences are accumulated.

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