Digital Twin: Definitions, Classification, and Maturity

In the process of developing digital twin for maintenance, there is a lack of reference to digital twin, architecture, and models in standards. In particular, the application also differs depending on needs of respective organisations. Before implementing the design and implementation of digital twin, it is necessary to define the user specifications and requirements. Hence, the first objective is to provide the digital twin terminology for maintenance based on the digital twin five-dimension model; physical, virtual, data, connection, and services. Due to the distinctive possibilities associated with the Digital Twin, their design and implementation are also wide-ranging. It can be classified based on dimensions. Hence, the second objective is to classify based on including several factors, such as, life cycle stages, completeness etc. In addition, the capability of digital representation to the physical asset is also of interest. Hence, the third objective is to assess the maturity level of DT. This paper provides a guideline in defining the DT with standardization, classification, and maturity level in the practical industrial applications.