Information Modelling Method of As-built Process Data

Abstract

The digital twin concept plays a significant role in the Industry 4.0 era since it was proposed. One key enabling technology for digital twin creation is the information modelling of physical products. Therefore, the modelling approach to modelling as-built process data of physical products, which faithfully reflects the real machining status, emerges to be pivotal. This paper addresses the problem of modelling as-built process data in machining process, which is difficult to accomplish by relevant methods, and hinders data reuse and the long-term archiving. Furthermore, an ontology-based information modelling method of as-built process data is proposed as the recommendation to represent and record the data in the cyberspace. It provides a standardized process for companies to model as-built process data by specifying the contents to be modeled, and the modelling method. To validate the effectiveness, a case study is undertaken in an aviation manufacturing plant at last. The result shows that the proposed information modelling methodology is readily to the virtualization of as-built machining process data.