Browsing by Author "Erkoyuncu, John Ahmet"

Browsing by Author "Erkoyuncu, John Ahmet"

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  • Data management for developing digital twin ontology model 
    Singh, Sumit; Shehab, Essam; Higgins, Nigel; Fowler, Kevin; Reynolds, Dylan; Erkoyuncu, John Ahmet; Gadd, Peter (Sage, 2020-12-09)
    Digital Twin (DT) is the imitation of the real world product, process or system. Digital Twin is the ideal solution for data-driven optimisations in different phases of the product lifecycle. With the rapid growth in DT ...
  • Data uncertainty assessment and information flow analysis for product-service systems in a library case study 
    Durugbo, Christopher; Erkoyuncu, John Ahmet; Tiwari, Ashutosh; Alcock, Jeffrey R.; Roy, Rajkumar; Shehab, Essam (Inderscience, 2010-12-31)
    The provision of service is increasingly becoming a key driver for delivering customer value. This emphasis on service provision is promoted by approaches such as Product-Service Systems (PSSs) that deliver value in use ...
  • DCT/IDCT filter design for ultrasound image filtering 
    Shakibaei, Barmak Honarvar; Flusser, Jan; Zhao, Yifan; Erkoyuncu, John Ahmet; Roy, Rajkumar (IEEE, 2021-05-05)
    In this paper, a new recursive structure based on the convolution model of discrete cosine transform (DCT) for designing of a finite impulse response (FIR) digital filter is proposed. In our derivation, we start with the ...
  • Defining next-generation additive manufacturing applications for the Ministry of Defence (MoD) 
    Busachi, Alessandro; Erkoyuncu, John Ahmet; Colegrove, Paul A.; Drake, Richard; Watts, Chris; Martina, Filomeno (Elsevier, 2016-11-02)
    “Additive Manufacturing” (AM) is an emerging, highly promising and disruptive technology which is catching the attention of the Defence sector due to the versatility it is offering. Through the combination of design freedom, ...
  • Design for Digitally Enabled Industrial Product-Services Systems 
    Erkoyuncu, John Ahmet; Farsi, Maryam; Addepalli, Sri; Latsou, Christina (Elsevier, 2023-07-08)
    Planning the life cycle of industrial product-service systems (IPS2) is highly challenging due to uncertainties experienced in predicting supply (e.g. spares) and demand (e.g. availability) related factors. Whilst ...
  • A design framework for adaptive digital twins 
    Erkoyuncu, John Ahmet; Fernández del Amo, Iñigo; Ariansyah, Dedy; Bulka, Dominik; Vrabič, Rok; Roy, Rajkumar (Elsevier, 2020-05-20)
    Digital Twin (DT) is a ‘living’ entity that offers potential with monitoring and improving functionality of interconnected complex engineering systems (CESs). However, lack of approaches for adaptively connecting the ...
  • A design framework for technology prioritisation in the context of through-life engineering services 
    Chi, Jie; Latsou, Christina; Erkoyuncu, John Ahmet; Grenyer, Alex; Rushton, Keith R.; Brocklebank, Simon (Elsevier, 2021-06-02)
    Lack of methods on standardising the prioritisation of technologies within the context of Through-life Engineering Services (TES) has been identified. Inspired by the TES value streams and support activity assets, existing ...
  • Design of a virtual reality framework for maintainability and assemblability test of complex systems 
    Marzano, Adelaide; Friel, Imelda; Erkoyuncu, John Ahmet; Court, Samuel (Elsevier, 2015-10-09)
    This paper presents a unique environment whose features are able to satisfy requirements for both virtual maintenance and virtual manufacturing through the conception of original virtual reality (VR) architecture. Virtual ...
  • Designing a semantic based common taxonomy of mechanical component degradation to enable maintenance digitalisation 
    Addepalli, Sri; Namoano, Bernadin; Oyedeji, Oluseyi Ayodeji; Farsi, Maryam; Erkoyuncu, John Ahmet (Elsevier, 2023-07-08)
    Digital data management and enterprise systems have become key to support the digitalisation of maintenance activities. With traditional maintenance activities still striving for efficiencies, platforms such as the natural ...
  • Designing a WAAM based manufacturing system for defence applications 
    Busachi, Alessandro; Erkoyuncu, John Ahmet; Colegrove, Paul A.; Martina, Filomeno; Ding, Jialuo (Elsevier, 2015-10-09)
    Current developments in “Wire+Arc Additive Manufacturing” (WAAM) have demonstrated the suitability of the technology for rapid, delocalized and flexible manufacturing. Providing a defence platform with the ability of ...
  • Designing an AR interface to improve trust in Human-Robots collaboration 
    Palmarini, Riccardo; Fernández del Amo, Iñigo; Bertolino, Guglielmo; Dini, Gino; Erkoyuncu, John Ahmet; Roy, Rajkumar; Farnsworth, Michael (Elsevier, 2018-05-21)
    In a global, e-commerce marketplace, product customisation is driven towards manufacturing flexibility. Conventional caged robots are designed for high volume and low mix production cannot always comply with the increasing ...
  • Designing value-driven solutions: the evolution of industrial product-service systems 
    Brissaud, Daniel; Sakao, Tomohiko; Riel, Andreas; Erkoyuncu, John Ahmet (Elsevier, 2022-08-03)
    Industrial Product-Service Systems (IPS²) have been increasingly researched and practiced in a variety of fields and sectors. Nevertheless, such solutions are not as significantly implemented as expected by the CIRP keynote ...
  • Detecting failure of a material handling system through a cognitive twin 
    D'Amico, Davide R.; Sarkar, A.; Karray, H.; Addepalli, Sri; Erkoyuncu, John Ahmet (Elsevier, 2022-10-26)
    This paper describes a methodology for developing a digital twin (DT) based on a rich semantic model and principles of system engineering. The aim is to provide a general model of digital twins (DT) that can improve decision ...
  • Developing an augmented reality based training demonstrator for manufacturing cherry pickers 
    Ferrati, Francesca; Erkoyuncu, John Ahmet; Court, Samuel (Elsevier, 2019-06-24)
    This paper presents an Augmented Reality (AR) demonstrator to test its feasibility with enhancing the training process, improving learning time and error rate. The application environment was a manufacturer of cherry ...
  • Developing an ontological framework for effective data quality assessment and knowledge modelling 
    Latsou, Christina; Garcia I Minguell, Marta; Sonmez, Ayse Nur; Orteu I Irurre, Roger; Palmisano, Martin Mark; Landon-Valdez, Suresh; Erkoyuncu, John Ahmet; Addepalli, Pavan; Sibson, Jim; Silvey, Olly (Cranfield University, 08/11/2022)
    Big data has become a major challenge in the 21st century, with research being carried out to classify, mine and extract knowledge from data obtained from disparate sources. Abundant data sources with non-standard structures ...
  • A digital twin architecture for effective product lifecycle cost estimation 
    Farsi, Maryam; Ariansyah, Dedy; Erkoyuncu, John Ahmet; Harrison, Andrew (Elsevier, 2021-06-02)
    Lifecycle cost estimation is crucial for high-value manufacturing sectors, in particular at the early product design stage, to maintain their product affordability and manufacturing profitability within the market. ...
  • Digital twin integration in multi-agent cyber physical manufacturing systems 
    Latsou, Christina; Farsi, Maryam; Erkoyuncu, John Ahmet; Morris, Geoffrey (Elsevier, 2021-11-09)
    Complex manufacturing and supply chain systems consist of concurrent labour-intensive processes and procedures with repetitive time-consuming tasks and multiple quality checks. These features may pose challenges for the ...
  • Digital twin-enabled automated anomaly detection and bottleneck identification in complex manufacturing systems using a multi-agent approach 
    Latsou, Christina; Farsi, Maryam; Erkoyuncu, John Ahmet (Elsevier, 2023-02-11)
    Digital twin (DT) models are increasingly being used to improve the performance of complex manufacturing systems. In this context, DTs automatically enabling anomaly detection, such as increase in orders, and bottleneck ...
  • Discrete Event Simulation Modelling for Dynamic Decision Making in Biopharmaceutical Manufacturing 
    Sachidananda, Madhu; Erkoyuncu, John Ahmet; Steenstra, Daniel; Michalska, Sandra (Elsevier, 2016-07-28)
    With the increase in demand for biopharmaceutical products, industries have realised the need to scale up their manufacturing from laboratory-based processes to financially viable production processes. In this context, ...
  • Dynamic multistep uncertainty prediction in spatial geometry 
    Grenyer, Alex; Schwabe, Oliver; Erkoyuncu, John Ahmet; Zhao, Yifan (Elsevier, 2021-02-10)
    Maintenance procedures for complex engineering systems are increasingly determined by predictive algorithms based on historic data, experience and knowledge. Such data and knowledge is accompanied by varying degrees of ...