Towards a STEP-compliant data model for process information management in additive manufacturing : application to fused deposition modelling ; Modèle de données pour la gestion des informations d’industrialisation en fabrication additive : conformité à la norme STEP et application au procédé par dépôt de matière fondue

Regarding the rapid development of additive manufacturing (AM) technology, the integration of digital thread and the standard of data exchange are becoming a huge trend. Digital thread has its own several stages, including production engineering and manufacturing operations. AM data exchange mainly focuses on various print formats, such as STL, AMF, 3MF, and STEP. Therefore, digital thread and information standard become increasing significant. In order to achieve a better integration of digital thread, data standard is needed further to enhance the interoperability among various computer-aided X systems (CAD/CAPP/CAM/CNC). Two kinds of problems must be overcome. The first problem is linked to process-related integration while the second is related to data standard. The contribution of the thesis is based on STEP/STEP-NC standards to integrated production engineering and manufacturing operations. The first contribution proposes the fundamental guideline for specifying AM digital thread, including concepts, standards, model representation, descriptive languages, and model assessment. The second contribution, AM process data model, is proposed to address the issues of data interoperability on production engineering and manufacturing operations that defines application objects and entities, and definitions process of data models. The third contribution focuses on the conformance assessment for proposed data model. It provides the specific analysis way for manufacturing layer and head path, respectively. Finally, the propositions are then implemented by a global architecture based on CatalystEX Platform. Such an architecture makes a demonstration on the interoperability of the developed data model and presents the use of a case study for NIST testing part. In order to integrate all the related information on production planning and manufacturing operations, extended STEP/STEP-NC physical file has been accomplished by STEP Part-21 to demonstrate the print planning and AM operations. ; Avec le développement de la ...