|Budget Amount *help
¥2,100,000 (Direct Cost : ¥2,100,000)
Fiscal Year 1998 : ¥800,000 (Direct Cost : ¥800,000)
Fiscal Year 1997 : ¥1,300,000 (Direct Cost : ¥1,300,000)
This project seeks to facilitate the development of models, methods and tools suitable for effective and profitable resource-saving and recycling-conscious manufacturing associated with minimizing environmental impacts through the whole product life-cycle. The environmental impacts will be analyzed and assessed with concurrent approach that aims to incorporate recycling decision into manufacturing decision processes between life-cycle design and manufacturing of mechanical products. The concurrent model towards more environmentally-friendlier product design, more efficient and profitable recycling-conscious manufacturing is to determine the following variables for both satisfying minimum total life-cycle cost and environmental impacts, as well as functional requirements : (1) the geometric shape and surface dimensions of a component ; (2) material selection and manufacturing method of each component, and (3) selecting net-shape raw material. An optimization analysis associated with min
imizing total energy and processing costs required in the whole product life-cycle is proposed by introducing hybrid solution procedure regarding constraint satisfaction and branch-and-bound methods. The analytical model integrating recycling issues into the manufacturing decision process is applied to the designing of a mechanical component, and the effectiveness of the procedure is also demonstrated.
In addition, This project focuses on the development and implementation of an intelligent Decision Support System (DSS) to enhance and further a resource-saving and recycling-conscious manufacturing activities associated with minimizing environmental impacts and resource and/or energy consumption through the whole product life-cycle. The intelligent DSS, which alms to more cost-effective and environmentally-friendlier product design and manufacturing, is mainly concemed with efficient integration of three functions : (1) knowledge-based support system for selecting environmentally sound materials and manufacturing process through weighted normalizing procedure, (2) constraint satisfaction and backtrack-free search technique assisting a flexible and efficient database query to guarantee environmentally preferable material continuously, and (3) simulation optimization techniques for synchronizing recycling activities and production management decision. An effective incentive design that would encourage suppliers towards environmentally friendlier procedures in their reprocessing activities, was also developed to enhance recycling activities between suppliers and manufacturer in cooperative team manufacturing.
2 リサイクル支援生産管理システム 不確実性や情報非対称性を補うため、リサイク処理業者、素材・部品メーカをインターネットで結び、最適シミュレーション技法を基軸として、各自の生産・リサイクル進捗状況に応じて必要な時必要なデータを収集・応用することで、継続的改善を可能にするリサイクル支援生産管理システムの開発を試みた。
3 循環型生産システムの継続的改善支援ツール 性能-機能-コスト-環境対応がバランス取れた意思決定のリサイクル性評価、環境影響評価、ライフサイクルコスト評価などは、環境データ収集のモニタリング機能、環境目標達成の診断機能、ライフサイクル計画の最適シミュレーション機能、環境データの傾向分析・予測機能、という4つの機能によって継続的改善支援を可能にした。
4 最適インセンティブ設計 回収率を高めるため、リサイクル処理業者、素材・部品メーカを内部組織化して協調性を持たせ、循環型生産活動の推進によるリスク配分と利益シェアリングの効果的なスキームを開発した。 Less