• Title/Summary/Keyword: 2D CAD Drawing

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A Study on Pipe Spool considering Workspace based on Genetic Algorithm (유전 알고리즘 기반의 작업공간을 고려한 배관 스풀에 관한 연구)

  • Yu, Seong-Sang;Lee, Kyung-Ho;Lee, Jung-Min;Nam, Byeong-Wook;Kim, Hyun
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.29 no.1
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    • pp.77-83
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    • 2016
  • Pipe working is consist of design, making and installation. Pipe line is consist of spool pipes which are made in fabrication shop. And these spool pipes installation in shipyard. Spool pipes are designed based 2D Drawings(ISO Drawing), so spool pipes are not considered working area, that wake decreasing working efficiency and delay working time. In this paper, suggest make spool pipe design method using analysis working area about 3D CAD model and genetic algorithm.

Functions and Roles of Digital Landscape Architectural Drawing (조경 설계에서 디지털 드로잉의 기능과 역할)

  • Lee, Myeong-Jun
    • Journal of the Korean Institute of Landscape Architecture
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    • v.46 no.2
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    • pp.1-13
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    • 2018
  • This work discusses the major roles of digital technologies in the history of landscape architectural drawing, and offers a critique of the dominant trend towards realism in recent digital landscape representations. During the period of transition from conventional drawing tools, computer technologies generally functioned as mechanical tools to imitate prior manual techniques. Specifically, the GIS was served as a mechanical tool to efficiently process the manual layer cake; CAD software generally functioned to translate physical models to two-dimensional construction documents while graphic software generally functioned as a tool to perform processes similar to those of manual collage and montage techniques. Recent digital landscape drawings tend to adopt a realistic depiction like the painting of landscape appearance. In the representations, discernible traces of cutting and assembling are removed via graphic software; thus, the complete representations are perceived as if they were a copy of an actual landscape. The realistic images are an easy way to communicate with the public. However, it is difficult to achieve a full embodiment of all of the multisensory characteristics of a landscape through these visuals. They often deceive viewers by visualizing idealized conditions of not-yet-actualized landscapes and production of the final images takes up a large portion of the overall design process. Alternatively, 3D digital modeling of landscape performance and creative uses of digital technologies during the overall design process, as well as hybridized techniques with different drawing techniques and technologies, provide the opportunity to explore various aspects of a landscape.

The Development of the Drawing Information Management Module for the Technical Document Management System (Technical Document Management System을 위한 도면정보 관리시스템 개발)

  • Yoon, Hee-Chul;Kim, Sun-Ho
    • IE interfaces
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    • v.7 no.3
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    • pp.213-225
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    • 1994
  • For the implementation of CE(Concurrent Engineering), the TDMS(Technical Document Management System) which integrates design and manufacuring information, is required. In this paper a drawing information management system, one of the essential modules for the TDMS has been developed. The system is operated in SUN SPARC II workstations. A CAD software called CIMCAD-2D is used for the storage and management of drawings. Relational DBMS ORACLE is used for the development of information data bases concerned with drawings. As an integration tool, the multi-media software called LINKAGE is used. Various functions for drawings and concerned information have been developed with the internal language CIMSHELL and SQL $^*PLUS$.

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Artificial Intelligence Image Segmentation for Extracting Construction Formwork Elements (거푸집 부재 인식을 위한 인공지능 이미지 분할)

  • Ayesha Munira, Chowdhury;Moon, Sung-Woo
    • Journal of KIBIM
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    • v.12 no.1
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    • pp.1-9
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    • 2022
  • Concrete formwork is a crucial component for any construction project. Artificial intelligence offers great potential to automate formwork design by offering various design options and under different criteria depending on the requirements. This study applied image segmentation in 2D formwork drawings to extract sheathing, strut and pipe support formwork elements. The proposed artificial intelligence model can recognize, classify, and extract formwork elements from 2D CAD drawing image and training and test results confirmed the model performed very well at formwork element recognition with average precision and recall better than 80%. Recognition systems for each formwork element can be implemented later to generate 3D BIM models.

Automatic Transformation Technique of 2D Ship Model into 3D Digital Model Using Fuzzy Inference (Fuzzy 추론법을 이용한 2차원 선박모델의 3차원 디지털 모델 자동변환 기술)

  • 김수영;김덕은;임언수
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2003.05a
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    • pp.103-106
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    • 2003
  • 선박의 초기 설계 단계에서는 작업의 용이성과 설계자의 관습 둥으로 인해 선박모델은 통상 2차원 모델로서 표현된다. 하지만 제품의 상세 설계 단계로 넘어가면 부품의 가공정보 도출, 부품간의 간섭확인, 제품의 성능해석의 용이성 등의 이유로 인해 제품 정보는 3차원 디지털 모델로서 표현되어야 한다. 그러나 현재까지 이러한 과정은 설계자에 의해 수작업으로 진행되고 있고 이 과정에서 공기의 지연, 설계자에 의한 해석 및 입력 오류 둥 많은 문제점이 야기되고 있다. 본 연구에서는 이러한 문제의 해결을 위해, Fuzzy 추론 기법을 이용한 2차원 선박 모델의 3차원 디지털 모델로의 자동 변환 기술을 검토한다.

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A Study on Efficient Workflow Improvement for Underground Facilities BIM Design Education (지하시설물 BIM 설계 교육을 위한 효율적인 업무프로세스 개선 방안에 관한 연구)

  • Jongseo Lee;Il-young Moon
    • Journal of Practical Engineering Education
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    • v.15 no.3
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    • pp.635-640
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    • 2023
  • Creating New Value Through Digital Transformation Across Industries Worldwide: A Focus on Transitioning from CAD to BIM Design in the Construction Sector with the Implementation of Mandatory BIM Design by 2025 by the Ministry of Land, Infrastructure, and Transport in South Korea. Challenges and Proposed Methodology for Enhancing Efficiency in BIM Design in the Civil Engineering Field of Underground Infrastructure, and Nurturing BIM Design Experts.

Method to Use the Augmented Reality for Construction Planning and Management

  • Nam, Keong-Woo;Kang, Chulung;Jang, Myunghoun
    • International conference on construction engineering and project management
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    • 2022.06a
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    • pp.1067-1074
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    • 2022
  • An architect creates his/her design to meet owner's requirements. Floor plans, perspective drawings, and scale models are used in order for the owner to choose the design. The tools are a little helpful for communication between the architect and the owner in case the owner does not know architecture. The scale models are good, but it is hard to make scale models while design is in progress. 3D CAD is a good tool for communication, but it is time-consuming and requires high-performance computer hardware. Augmented reality is able to show 3D virtual models that are updated by the architect with smart devices such as a smart phone and a tablet PC. The owner frequently reviews the updated design anytime anywhere. This study proposes a method to use augmented reality for architectural design and construction management. The method supports the communication between the owner, the architect and the contractor to review updated designs, and to complete the building project. 3D models expressed in augmented reality are created using SketchUp with 2D drawings for building construction. An Android application implementing augmented reality is developed by Qualcomm Vuforia and Unity on smart devices. Drawings as markers and 3D models are connected in Unity. And functions that temporarily hide unnecessary parts can be implemented in C# programming language. If an owner, an architect, or a contractor looks at a smart phone on a 2D drawing, he/she can identify building elements such as 3D buildings or columns on a screen. This can help communication between them.

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Optimal Design and Die Manufacturing of an Axial Fan for Cooling Towers (냉각탑용 축류팬 설계 및 금형제작의 자동화)

  • Kang, Jae-Gwan;Lee, Hak-Sun;Oh, Kun-Je;Jung, Jong-Youn
    • IE interfaces
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    • v.13 no.4
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    • pp.717-724
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    • 2000
  • In this paper, an integrated system of optimal design, performance evaluation, and die design and manufacturing of axial fans for cooling tower is presented. The design and performance evaluation are developed based on three dimensional flow analysis so as to ensure low noise and high efficiency. The methodologies are implemented on computer as a GUI system including 3-D surface modeling and 2-D drawing file output modules. The CAD/CAM system is engaged to design the die and generate NC tool path, but the processes are also automated and integrated into the system by means of a part program coded from the design data. It is shown that the newly developed fans have superior performance and shortened lead-time compared to the existing dead-copied fans.

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Method to Select Tower Cranes Using Augmented Reality in Smart Devices (스마트 기기의 증강현실을 이용한 타워크레인 선정방안)

  • Ryu, Han-Guk;Choi, Heebok;Jang, Myung-Houn
    • Journal of the Korea Institute of Building Construction
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    • v.14 no.5
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    • pp.407-413
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    • 2014
  • Appropriate selection of lifting equipments for a high-rise building construction project is one of the important factors to the project's success. Proper position of a tower crane on a construction site is so important to be determined by an expert or an experienced construction manager who draws working range of a tower crane and moves it over 2D(dimensional) site layout plan. 3D CAD, BIM, and virtual reality are is used for building design and construction, but it is not usual to use them for temporary facility planning or selection of a tower crane. This study proposes a suitable method to use augmented reality to select proper position of tower cranes. An augmented reality prototype is implemented by Vuforia and Unity 3D on a smart device to verify the practicability of the proposed method. The prototype application installed on a smart device shows several tower cranes on different markers in a real architectural drawing to locate the proper tower crane.

Development of Progressive Die CAD/CAM System for Manufacturing Lead Frame, Semiconductor (반도체 리드 프레임 제조를 위한 프로그레시브 금형의 CAD/CAM 시스템 개발)

  • Choi, J.-C.;Kim, B.-M.;Kim, C.;Kim, J.-H.;Kim, C.-B.
    • Journal of the Korean Society for Precision Engineering
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    • v.16 no.12
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    • pp.230-238
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    • 1999
  • This paper describes a research work of developing computer-aided design of lead frame, semiconductor, with blanking operation which is very precise for progressive working. Approach to the system is based on the knowledge-based rules. Knowledge for the system is formulated from plasticity theories, experimental results and the empirical knowledge of field experts. This system has been written in AutoLISP on the AutoCAD using a personal computer and in I-DEAS Drafting Programming Language on the I-DEAS Master Series Drafting with Workstation, HP9000/715(64) and tool kit on the ESPRIT. Transference of data among AutoCAD, I-DEAS Master Series Drafting, and ESPRIT is accomplished by DXF(drawing exchange format) and IGES(initial graphics exchange specification) methods. This system is composed of six modules, which are input and shape treatment, production feasibility check, strip-layout, die-layout, modelling, and post-processor modules. The system can design process planning and Die design considering several factors and generate NC data automatically according to drawings of die-layout module. As forming process of high precision product and die design system using 2-D geometry recognition are integrated with technology of process planning, die design, and CAE analysis, standardization of die part in die design and process planning of high pression product for semiconductor lead frame is possible to set. Results carried out in each module will provide efficiencies to the designer and the manufacturer of lead frame, semiconductor.

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