Digital Twins of existing long-living assets: reverse instantiation of the mid-life twin

Abstract

The added value of long-living assets declines during their lifespan, especially if they do not undergo regular planningintensive maintenance and retrofits. Here, the Digital Twin (DT) concept can support by representing the physical asset's most recent state, typically based on data and information from product creation. However, in the depicted domain, the stakeholders of the product's Mid-of-Life often do not have access to the early phases. Therefore, as often presented in current concepts, creating a holistic Digital Twin is not feasible. Instead, in the Mid-Life phase of long-living assets, only a usecase-specific and demand-actuated Digital Twin is attainable. This instantiation requires a solid procedure, which will be elaborated on in this work.

Introducing a multipliable BOM-based automatic definition of information retrieval in plant engineering

“…Instantiation is a core concept in computer programming, particularly in the object-oriented programming paradigm and refers to the creation of an object from a class (McAllester and Zabih, 1986). Beyond programming, the concept of instantiation has been employed to describe the process of creating specific embodiments of concepts (Gorecky et al, 2016), models (Ballesteros, 2004;Kashmar et al, 2023) or Digital Twins (Moenck et al, 2022;Slot et al, 2020). Instantiation, in this broader sense, involves applying a general framework, template, or concept to a specific situation or context.…”

Supporting Digital Twins for the Retrofit in Aviation by a Model-Driven Data Handling

“…Then again, graph databases, such as those commonly found in data science projects, are exceptionally good It is often adapted or extended to the specific application by adding relevant elements, aspects, or steps [28]. In a previous work [29], such an extension of CRISP-DM was briefly presented. This extension incorporates steps to define the needed information for a digital representation and later on identify missing data as well as provide strategies on how to acquire said information.…”

Enhancing design representations of information and knowledge of complex and long-living assets by applying system modelling techniques

“…Not only does information specific to a product or project need to be considered, but also the common knowledge of the company or whole industry needs to be managed. This is especially challenging for long-living assets as stakeholders are facing assets, that are already produced and come with structures and strategies that are already established and not created by the organisation itself (Moenck et al, 2022b). Because the occurring meta-information, like relations and dependencies between information or fragments of information, are increasingly important in this situation as well, the handling of information needs to be able to handle that information as well.…”

“…While the answer to that question will incorporate many aspects, this publication will focus on the very first steps; the identification of the relevant aspects in the real world and a methodical approach to transfer those into the virtual world using abstractions and creating a framework. Other publications already describe applications and approaches that apply this methodology and utilise the created representations for applications in aviation's retrofit (Moenck et al, 2022b;Laukotka and Krause, 2023).…”