International audienceIn a collaborative computer-supported engineering environment, the interoperation of various applications will need a representation that goes beyond the current geometry-based representation, which is inadequate for capturing semantic information. The primary purpose of this study is to discuss a semantically based information exchange protocol that will facilitate seamless interoperability among current and next generation computer-aided design systems (CAD) and between CAD and other systems that use product data. An ontological approach is described to integrating computer-aided design (CAD) and computer-aided process planning (CAPP). Two commercial software applications are used to demonstrate the approach. This involves the development of a shared ontology and domain specific ontologies in the Knowledge Interchange Format (KIF) language. Domain specific ontologies — which are feature-based — are developed after a detailed analysis of the CAD and the CAPP software. Mapping between the domain ontologies and the shared ontology is achieved by several mapping rules. The approach is validated by using a variety of parts
Recent research work concerning cooperative and concurrent engineering, increasingly interest industrial firms. Companies can no longer ignore this approach due to industrial needs such as improvement of quality and reduction of cost and delay. The objective of this paper is to propose an approach allowing the different experts or firms, to cooperate via Internet. To facilitate the communication of information among experts and to suppress the organizational borders of companies, STEP Standards is a viable tool that can be used in this frame. Nevertheless some tools have to be developed to give accessible STEP technology to the different actors. As an application study, the cutting process field is considered. Actually, STEP does not propose any parts for such field, so we have developed different standard models based on STEP methodology. These models have been validated by industrial cases. We have also proposed a methodology for cooperative work and an infrastructure architecture based on internet tools. An example of software prototype interface shows how different experts can share their different points of views at both information models and data. Finally the problems encountered by our proposed approach are explained and future works are presented.
− − − − Currently, computer aided systems have concentrated on the capture and representation of geometric shape and technical information, as opposed to providing support for product design. The aim of this paper is to propose a framework for an integrated software that assists designers in the early design phases to work in cooperative and collaborative manner.
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