An Effectivity Date Decision Model for Engineering Changes

• Main Authors: Shi-Zhe Liu, 劉希哲
• Other Authors: 蕭俊彥
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/53452714422202060940

碩士 === 中原大學 === 工業工程研究所 === 96 === For enterprise, market opportunities often initialize lifecycle of a new product development. The cycle then follows by requirement analysis, design, production, and finalized with marketing. Globalized competitive environment has increased the turnover rate of products. To keep up with the fast paste, the product lifecycle time is becoming shorter and shorter. During the production cycle, when an approved engineering design is not able to be manufactured with current materials and/or equipments, an engineering change (EC) is required. When EC occurs, the design end needs to change all the related design documents, and the production end needs to reevaluate material purchasing plan and equipments scheduling. All these are time and cost consuming. Effective date is the date that a documented change is implemented and applied to shop floor workshop. Effectivity date is the date that decision makers wish documented changes begin to applied. In normal situations, multiple disciplines, such as design and development, purchasing, shop floor workshop, quality control, and so on, are involved in a change decision, which will be made on when a change is to become effective. In this thesis, a mixed Integer programming effectivity decision model is proposed to support changes of the design and production ends synchronously when an engineering change occurred. The proposed model succeeds in an integration of the change management problems (from PDM perspective) and production planning and shop floor scheduling problems (from ERP perspective).