Block assembly planning in shipbuilding using case-based reasoning |
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| Affiliation: | 1. Department of Industrial and Information Systems Engineering, Korea University, Seoul, Republic of Korea;2. School of Naval Architecture and Ocean Engineering, University of Ulsan, San-29, Mookeo-dong, Nam-gu, Ulsan 680-749, Republic of Korea;3. Department of Industrial Engineering, Kyungsung University, Busan, Republic of Korea;1. School of Mechatronics, Gwangju Institute of Science and Technology, Gwangju, 500-712, Republic of Korea;2. Research Institute of Technology, STX Offshore and Shipbuilding, Changwon-si, Gyeongsangnam-do, 641-060, Republic of Korea;3. School of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University, Pusan, 606-791, Republic of Korea;1. PROSTEP AG, Head of Business Unit 3D Product Creation, Dolivostraβe 11, D-64293 Darmstadt, Germany;2. Miele & Cie. KG, Segment Professional Laundry, Director Segment Professional Laundry, Technology Lehrte, Industriestraße 3, 31275 Lehrte, Germany;1. Department of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China;2. Nanjing Electronic Devices Institute, 21 Jiefang Road, Qinhuai District, Nanjing 210016, China;1. School of Business, Worceter Polytechnic Institute (WPI), 100 Institute Rd, Worcester, MA 01609, USA;2. Central R&D Institute, Daewoo Shipbuilding & Marine Engineering Co., Ltd., 1, Aju-dong, Geoje-si, Gyeongsangnam-do 656-714, Republic of Korea |
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| Abstract: | A process planning system using case-based reasoning (CBR) is developed for block assembly in shipbuilding. A block assembly planning problem is modeled as a constraint satisfaction problem where the precedence relations between operations are considered constraints. In order to find similar cases, we propose two similarity coefficients for finding similar cases and for finding similar relations. Due to the limited number of operation types, the process planning system first matches the parts of the problem and those of the case-based on their roles in the assembly, and then it matches the relations related to the matched part–pairs. The parts involved in more operations are considered first. The process planning system is applied to simple examples for verification and comparison. An interface system is also developed for extracting information from CAD model, for preparing data for process planning, and for visually verifying the assembly sequence. |
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