Managing knowledge within the manufacturing enterprise: an overview <s> Product data models <s> Activities of product design and manufacturing are carried out on a worldwide scale. Operations like outsourcing and fabless manufacturing occur frequently in both design and manufacturing processes to stimulate outbreaks of the abovementioned phenomena. In this situation, manufacturing knowledge data, that have been collected and used only by the same enterprise in the same place and within the same ethnic group up to now, are not sufficient or precise enough for making a plan of ongoing manufacturing. This paper tries to suggest an example of manufacturing knowledge data containing an element of production culture and to estimate a risk of manufacturing trouble that could happen between each production culture. <s> BIB001 </s> Managing knowledge within the manufacturing enterprise: an overview <s> Product data models <s> Purpose – To provide a selective bibliography for researchers and practitioners interested in database modeling of engineering information with sources which can help them develop engineering information systems.Design/methodology/approach – Identifies the requirements for engineering information modeling and then investigates how current database models satisfy these requirements at two levels: conceptual data models and logical database models.Findings – Presents the relationships among the conceptual data models and the logical database models for engineering information modeling viewed from database conceptual design.Originality/value – Currently few papers provide comprehensive discussions about how current engineering information modeling can be supported by database technologies. This paper fills this gap. The contribution of the paper is to identify the direction of database study viewed from engineering applications and provide a guidance of information modeling for engineering design, manufactur... <s> BIB002
Ma defines the requirements for engineering information modelling in databases and carried out a review to support researchers in the field. Requirements include complex objects and relationships, data exchange and sharing, web-based method, imprecision and uncertainty, and knowledge management. The paper focuses on storage of EXPRESS / STEP conceptual representations BIB002 . Aifaoui et al. propose 'mechanical analysis features' as part of a semantically rich product model to support interoperability between design and analysis processes . Zhang et al. review Internet-based product information sharing and visualisation. They carry out a case study, in which STEP is used to establish a product data master model that supports sharing of 3D structures. The objective of the master model is to capture all essential and interrelated information and product properties . Alisanto et al. propose a purpose-behaviour product structure to support collaborative product development. Functional and non functional attributes can be traced to the corresponding product structure elements . Krishnapillai and Zeid suggest that mass customisation with mass production efficiency requires tight integration of requirements gathering, product design and manufacturing. They propose a methodology to classify design information that can accommodate design variations. Their example applies a design matrix to a simple product design . Lee et al. develop a method that supports the requirements collection phase of product modelling by formally defining the terms and grammar that can be used in defining the product model. EXPRESS is applied to the product model. The method formalises product structures and relationships (product has a part is type of part, etc.) . Ihara and Zhu propose a tree structure to represent design that overcomes problems with sharing manufacturing knowledge transfer across different production cultures. This tree structure is used to generate a process plan. The tree structure provides key product qualities as focus points. This enables the creation of an appropriate plan BIB001 . Matta et al. present an approach to capture knowledge without disturbing the designer's activities. The approach keeps track of knowledge produced, as a behaviour model linking functions and product structure. Design process modelling is also part of the method, using GRAI nets. This supports the capture of design history . Wang et al. propose a method to enhance engineering data security management in a peer to peer collaborative environment. Heterogenous design data are exchanged selectively through an XML common interface. Integrated geometric and non-geometric XML data representation using encrypted XML enables sharing of partial models in a secure manner . Sharing and security are major issues in the manufacturing knowledge domain.