scholarly journals A Knowledge-Based Digital Lifecycle-Oriented Asset Optimisation

2021 ◽  
Vol 15 (2) ◽  
pp. 226-334
Author(s):  
Theresa Passath ◽  
Cornelia Huber ◽  
Linus Kohl ◽  
Hubert Biedermann ◽  
Fazel Ansari

The digitalisation of the value chain promotes sophisticated virtual product models known as digital twins (DT) in all asset-life-cycle (ALC) phases. These models. however, fail on representing the entire phases of asset-life-cycle (ALC), and do not allow continuous life-cycle-costing (LCC). Hence, energy efficiency and resource optimisation across the entire circular value chain is neglected. This paper demonstrates how ALC optimisation can be achieved by incorporating all product life-cycle phases through the use of a RAMS²-toolbox and the generation of a knowledge-based DT. The benefits of the developed model are demonstrated in a simulation, considering RAMS2 (Reliability, Availability, Maintainability, Safety and Sustainability) and the linking of heterogeneous data, with the help of a dynamic Bayesian network (DBN).

Author(s):  
David Edward Jones ◽  
Chris Snider ◽  
Lee Kent ◽  
Ben Hicks

ABSTRACTWhile extensive modelling - both physical and virtual - is imperative to develop right-first-time products, the parallel use of virtual and physical models gives rise to two interrelated issues: the lack of revision control for physical prototypes; and the need for designers to manually inspect, measure, and interpret modifications to either virtual or physical models, for subsequent update of the other. The Digital Twin paradigm addresses similar problems later in the product life-cycle, and while these digital twins, or the “twinning” process, have shown significant value, there is little work to date on their implementation in the earlier design stages. With large prospective benefits in increased product understanding, performance, and reduced design cycle time and cost, this paper explores the concept of using the Digital Twin in early design, including an introduction to digital twinning, examination of opportunities for and challenges of their implementation, a presentation of the structure of Early Stage Twins, and evaluation via two implementation cases.


2011 ◽  
Vol 120 ◽  
pp. 456-459 ◽  
Author(s):  
Li Sun ◽  
Jian Min Fan ◽  
Zi Qin Ma ◽  
Xiu Lun Wang ◽  
Hao Tan ◽  
...  

Based on the philosophy of cloud computing and cloud manufacturing, cloud process management, a new intelligently network process management model, is proposed. And it is service-oriented, highly efficient, and knowledge-based. On the base of the study of contemporary process management, cloud computing, and cloud manufacturing, product life cycle-oriented cloud process management is researched with the survey of a large state-owned enterprise. The cloud process management is initially defined. The structure model of cloud process management is expounded. And the application mode of product life cycle-oriented cloud process management is initially put forward. These establish the foundation for further research.


Author(s):  
James A. Gopsill ◽  
Chris Snider ◽  
Chris McMahon ◽  
Ben Hicks

AbstractDealing with component interactions and dependencies remains a core and fundamental aspect of engineering, where conflicts and constraints are solved on an almost daily basis. Failure to consider these interactions and dependencies can lead to costly overruns, failure to meet requirements, and lengthy redesigns. Thus, the management and monitoring of these dependencies remains a crucial activity in engineering projects and is becoming ever more challenging with the increase in the number of components, component interactions, and component dependencies, in both a structural and a functional sense. For these reasons, tools and methods to support the identification and monitoring of component interactions and dependencies continues to be an active area of research. In particular, design structure matrices (DSMs) have been extensively applied to identify and visualize product and organizational architectures across a number of engineering disciplines. However, the process of generating these DSMs has primarily used surveys, structured interviews, and/or meetings with engineers. As a consequence, there is a high cost associated with engineers' time alongside the requirement to continually update the DSM structure as a product develops. It follows that the proposition of this paper is to investigate whether an automated and continuously evolving DSM can be generated by monitoring the changes in the digital models that represent the product. This includes models that are generated from computer-aided design, finite element analysis, and computational fluid dynamics systems. The paper shows that a DSM generated from the changes in the product models corroborates with the product architecture as defined by the engineers and results from previous DSM studies. In addition, further levels of product architecture dependency were also identified. A particular affordance of automatically generating DSMs is the ability to continually generate DSMs throughout the project. This paper demonstrates the opportunity for project managers to monitor emerging product dependencies alongside changes in modes of working between the engineers. The application of this technique could be used to support existing product life cycle change management solutions, cross-company product development, and small to medium enterprises who do not have a product life cycle management solution.


Author(s):  
A Bernard

This paper presents an overview of actual approaches in virtual engineering, mainly from the design point of view. The evolution of the market has necessitated the reduction of time-to-market, essentially because the product life cycle is shorter, but also because it is very important to proceed more rapidly from an initial conception to a mass production object. As a result of newly evolved software DOI: environments, knowledge-based systems, and product data management, processes for integrated design and manufacturing for new products have emerged. Owing to this evolution of virtual engineering technologies, it has become possible today to validate parts representative of mass production within a very short time. This paper provides an overview of the actual methods and tools in all the components that affect the speed and efficiency of product development, in particular all the possibilities available to the designer, from the earliest stages of a product's life cycle.


2016 ◽  
Vol 37 (1) ◽  
pp. 22-33 ◽  
Author(s):  
Zachary A. Collier ◽  
Elizabeth B. Connelly ◽  
Thomas L. Polmateer ◽  
James H. Lambert

Author(s):  
Thomas D. Hedberg ◽  
Sylvere Krima ◽  
Jaime A. Camelio

Trust in product data quality (PDQ) is critical to successful implementation of the model-based enterprise (MBE). Such trust does not extend to the exchange and the reuse of three-dimensional (3D) product models across the product life cycle because verifiable traceability in the product data is lacking. This assurance is especially crucial when “siloed” manufacturing functions produce the product data that is not fully interoperable and thus requires frequent reworking to enable its reuse. Previous research showed how public key infrastructure (X.509-PKI) from the X.509 standard could be used to embed digital signatures into the product data for the purposes of certification and traceability. This paper first provides an overview and review of technologies that could be integrated to support trust throughout the product life cycle. This paper then proposes a trust structure that supports several data transaction types. Then, the paper presents a case study for common configuration management (CM) workflows that are typically found in regulated industries. Finally, the paper draws conclusions and provides recommendations for further research for enabling the product life cycle of trust (PLOT).


2020 ◽  
Vol 4 (1) ◽  
pp. 44-67
Author(s):  
Han Jia ◽  
Chun Guo ◽  
Xiaozhong Liu

AbstractWith the rapid growth of the smartphone and tablet market, mobile application (App) industry that provides a variety of functional devices is also growing at a striking speed. Product life cycle (PLC) theory, which has a long history, has been applied to a great number of industries and products and is widely used in the management domain. In this study, we apply classical PLC theory to mobile Apps on Apple smartphone and tablet devices (Apple App Store). Instead of trying to utilize often-unavailable sales or download volume data, we use open-access App daily download rankings as an indicator to characterize the normalized dynamic market popularity of an App. We also use this ranking information to generate an App life cycle model. By using this model, we compare paid and free Apps from 20 different categories. Our results show that Apps across various categories have different kinds of life cycles and exhibit various unique and unpredictable characteristics. Furthermore, as large-scale heterogeneous data (e.g., user App ratings, App hardware/software requirements, or App version updates) become available and are attached to each target App, an important contribution of this paper is that we perform in-depth studies to explore how such data correlate and affect the App life cycle. Using different regression techniques (i.e., logistic, ordinary least squares, and partial least squares), we built different models to investigate these relationships. The results indicate that some explicit and latent independent variables are more important than others for the characterization of App life cycle. In addition, we find that life cycle analysis for different App categories requires different tailored regression models, confirming that inner-category App life cycles are more predictable and comparable than App life cycles across different categories.


2012 ◽  
Vol 9 (1) ◽  
pp. 34-62 ◽  
Author(s):  
Eckard Rehbinder

Compared to climate protection and the promotion of renewable energy and energy efficiency, the saving of natural resources has been a somewhat neglected field of EU sustainability law. Based on the thesis that from an environmental policy perspective it is not resource scarcity as such but the environmental impacts associated with resource use that must be addressed, the article analyses the existing EU law and possibilities for strengthening resource efficiency and eco-efficiency in EU law. In particular, it discusses possible strategic concepts and instruments, focusing on activity-based strategies such as product life cycle thinking.


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