Petri Net modelling for enhanced IT asset recycling solutions by Christina Latsou, Sarah Dunnett, Lisa Jackson

“…The future aim of this research is the automatic generation of a system model for complex industrial systems and processes by converting the SysML – based specifications into Petri Nets.…”
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Use of Petri nets to model the maintenance of wind turbines by Johanna Leigh, Sarah Dunnett

“…The two main problems with the current operations and maintenance of an offshore wind turbine are the cost and availability. In this work a simulation model has been produced of the maintenance process for a wind turbine with the aim of developing a procedure that can be used to optimise the process. …”
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Resilience assessment for nuclear power plants using Petri nets by Rundong, Sarah Dunnett

“…To demonstrate the methodology developed, it is applied to assess the resilience of a single-unit pressurised heavy-water reactor system to a station blackout accident. …”
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Reliability modelling of automated guided vehicles using Petri nets by Rundong, Sarah Dunnett, Lisa Jackson

“…To assure their added value, taking a typical AGV transport system as an example, the reliability issues in AGVs are investigated in this paper. …”
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Reliability modelling of PEM fuel cells with hybrid Petri nets by Andrey Vasilyev, J.D. Andrews, Lisa Jackson, Sarah Dunnett

“…The non-deterministic model, on the other hand, is implemented with stochastic Petri nets which represent different events that can occur at random times during fuel cell lifetime. …”
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A petri net methodology for modeling the resilience of nuclear power plants by Rundong, Sarah Dunnett, Silvia Tolo, John Andrews

“…In the paper, a novel Petri Net (PN) method for assessing the resilience of nuclear reactors is presented. …”
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Methodology for automated Petri Net model generation to support Reliability Modelling by Christina Latsou

“…Earlier work lacks full automation resulting in semi-automated methods since they require user intervention to import system information to the algorithm, focus on specific domains and cannot accurately model systems or processes with control loops and dynamic features. This thesis develops a novel method that can generate reliability models for complex systems and processes, based on Petri Net models. …”
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A new methodology for automated Petri Net generation: Method application by Christina Latsou, Sarah Dunnett, Lisa Jackson

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Improving the strategy of maintaining offshore wind turbines through petri net modelling by Rundong, Sarah Dunnett

“…In order to improve the operation and maintenance (O&M) of offshore wind turbines, a new Petri net (PN)-based offshore wind turbine maintenance model is developed in this paper to simulate the O&M activities in an offshore wind farm. …”
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Wind turbine installation vessel mission reliability modelling using petri nets by Rundong, Sarah Dunnett, Lisa Jackson

“…Currently, there are less than 20 vessels globally that can support the installation of these large turbines. …”
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Automated generation of a Petri net model: application to an end of life manufacturing process by Christina Latsou, Sarah Dunnett, Lisa Jackson

“…There are various reliability techniques available to model performance, for example fault trees, simulation etc., but generating the models can become a significant task that is cumbersome, error-prone and tedious. …”
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Petri net modelling for achieving an optimal design of a wind turbine condition monitoring system by Rundong, Sarah Dunnett, Lisa Jackson

“…The aim of this paper is to answer such a question with the aid of the Petri net modelling method. …”
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Phased mission modelling of systems with maintenance free operating periods using simulated Petri-nets by Samuel P. Chew, Sarah Dunnett, J.D. Andrews

“…The model uses a form of Monte-Carlo simulation to obtain its results, and due to the modelling power of Petri Nets, can consider complexities such as multi-mission periods, component failure rate interdependencies, and mission abandonment. …”
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A Petri net approach for performance modelling of polymer electrolyte membrane fuel cell systems by Claudia Fecarotti, John Andrews, Rui Chen

“…This paper seeks to introduce a modelling approach based on the Petri net method for the performance analysis of fuel cell systems. …”
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Phased mission modelling of systems with maintenance-free operating periods using simulated Petri nets by Samuel P. Chew, Sarah Dunnett, J.D. Andrews

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Simulation of polymer electrolyte membrane fuel cell degradation using an integrated petri net and 0D model by M Whiteley, Sarah Dunnett, Lisa Jackson

“…This paper presents a comprehensive Petri-Net model integrated with a 0-D fuel cell performance model of the fuel cell system to develop a more accurate degradation model. …”
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A Petri net model-based resilience analysis of nuclear power plants under the threat of natural hazards by Rundong, Sarah Dunnett, John Andrews

“…The method developed is applied to assess the resilience of a single-unit pressurised heavy water reactor under the threat of three possible external events. …”
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Automated guided vehicle mission reliability modelling using a combined fault tree and Petri net approach by Rundong, Lisa Jackson, Sarah Dunnett

“…Following a Failure Modes Effects and Criticality Analysis (FMECA), the reliability of the AGV system is analysed via Fault Tree Analysis (FTA) and the vehicles mission reliability is evaluated using the Petri net (PN) method. …”
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Interaction protocols for cross-organisational workflows by Flavio S.C. da Silva, Mirtha L.F. Venero, Diego M. David, Mohammad Saleem, Paul Chung

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Advanced reliability analysis of Polymer Electrolyte Membrane Fuel Cells using Petri-Net analysis and fuel cell modelling techniques by Michael Whiteley, Ashley Fly, Johanna Leigh, Sarah Dunnett, Lisa Jackson

“…Current reliability standards for automotive applications require an operational life- time of 150,000 miles or 5,000 hours. These standards are hard to achieve; therefore in depth reliability analysis and degradation studies can help allude towards the key areas of improvement in fuel cell technology to meet these standards. …”
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Advanced reliability analysis of Polymer Electrolyte Membrane Fuel Cells using Petri-Net analysis and Fuel Cell modelling techniques. by Michael Whiteley, Johanna Leigh, Ashley Fly, Lisa Jackson, Sarah Dunnett

“…Current reliability standards for automotive applications require an operational lifetime of 150, 000 miles or 5, 000 hours. These standards are hard to achieve; therefore in depth reliability analysis and degradation studies can help allude towards the key areas of improvement in fuel cell technology to meet these standards. …”
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Integration of the Cimosa and high-level coloured Petri net modelling techniques with application in the postal process using hierarchical dispatching rules by K.S. Wong, Robert M. Parkin, J. Coy

“…The current paper has presented a novel mechanism, i.e. Cimosa—HCTSPN modelling approach, to extract information on process elements and their interactions. …”
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A modelling framework for dynamic safety assessment by Silvia Tolo, Rundong, Sarah Dunnett, John Andrews

“…The current literature and engineering practice lack of a widely agreed upon methodology for the assessment of systems resilience, or even for the definition of its metrics. …”
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Enhancing the performance of automated guided vehicles through reliability, operation and maintenance assessment by Rundong

“…In the model, an advanced concept PN, namely Coloured Petri Net (CPN), was creatively used to describe the movements of the AGVs. …”
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Study of the resilience of nuclear power plants in response to climate change by Rundong, Sarah Dunnett

“…To facilitate the research, the intake structure blockage caused by the outbreak of a kind of marine organism whose size varies from 4mm to 40mm, is chosen as a case study. …”
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Model-based research for aiding decision-making during the design and operation of multi-load automated guided vehicle systems by Rundong, Sarah Dunnett, Lisa Jackson

“…In order to explore the answer to this question and help operators make decisions during the design and operation of these systems, this article will use Coloured Petri nets (CPN) to develop a mathematical model to investigate the performance (i.e., the total number of items delivered within a given time) of the multi-load AGV system in various scenarios. …”
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Maintenance modelling of complex automated guided vehicle systems by Rundong, Sarah Dunnett, Lisa Jackson

“…Such driverless vehicles generally travel along a predefined route performing set tasks and they have been widely adopted due to their efficiency and economic benefits, Le-Anh and De Koster (2006). …”
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A study for further exploring the advantages of using multi-load automated guided vehicles by Rundong, Sarah Dunnett, Lisa Jackson

“…The study reported in this paper is focused to answer a few key questions, i.e. whether system performance can be continuously improved by increasing the load capacity of the multi-load AGVs; if not, whether there is an optimal load capacity of the multi-load AGV for a particular system; and whether the multi-load AGVs can still work well in a system with flexible loading and unloading points. …”
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Modelling service support system reliability by Sean Reed, J.D. Andrews, Sarah Dunnett, Magnus Karlberg, Lennart Karlsson, Magnus Lofstrand

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Risk modelling of ageing nuclear reactor systems by Mark James Wootton, John D Andrews, Adam Lloyd, Roger Smith, A John Arul, Gopika Vinod, M Hari Prasad, Vipul Garg

“…The traditional methodologies, such as Fault Trees and Event Trees, have limitations in their abilities to model ageing processes and complex maintenance strategies. Petri Nets have been used in this research as a more suitable alternative. …”
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Novel methodology for optimising the design, operation and maintenance of a multi-AGV system by Rundong, Sarah Dunnett, Lisa Jackson

“…Once an AGV is failed, it will be towed to the maintenance site for repair by a recycle vehicle to prevent deadlock and conflict. …”
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Production system identification with genetic programming by Peter Denno, Charles Dickerson, Jennifer Harding

“…Pairing genetic programming, a variation of genetic algorithms, with Petri nets seems to offer an attractive, alternative means to discover system behaviour and structure. …”
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Impact of condition monitoring on the maintenance and economic viability of offshore wind turbines by Rundong Yan, Sarah Dunnett, Lisa Jackson

“…In this paper, the Petri Net (PN) simulation models are developed to quantitatively assess the OWT availability and operation and maintenance (O&M) costs. …”
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Dynamic reliability assessment of PEM fuel cell systems by Andrey Vasilyev, John Andrews, Sarah Dunnett, Lisa Jackson

“…In this paper, a novel model for the dynamic reliability analysis of a polymer electrolyte membrane fuel cell system is developed to account for multi-state dynamics and ageing. …”
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Comparison of resilience vs traditional probabilistic safety assessment for nuclear power facilities by Rundong, Sarah Dunnett, John Andrews

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Systems reliability modelling for phased missions with maintenance-free operating periods by Samuel P. Chew

“…This idea was the Maintenance Free Operating Period (MFOP), a duration of time in which the overall system can complete all of its required missions without the need to undergo emergency repairs or maintenance, with a defined probability of success. …”
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Automatic phased mission system reliability model generation by Kathryn S. Stockwell

“…A system can also be simulated across multiple consecutive missions. …”
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Modelling and simulation of functional product system availability and support costs by Magnus Lofstrand, Sean Reed, Magnus Karlberg, J.D. Andrews, Lennart Karlsson, Sarah Dunnett

“…Functional Products (FP), total offers or product service systems that comprise of both Hardware (HW) and Support Services (SS) sold as an integrated offering under an availability guarantee are becoming increasing popular in industry. …”
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Optimisation of nuclear reactor primary coolant design and maintenance parameters by Mark James Wootton, Ying Zhou, John D Andrews, Roger Smith, John Arul, Gopika Vinod, Hari Prasad Muruva, Vipul Garg

“…An optimisation methodology is presented using the primary coolant circulation system of a nuclear reactor as its case study, the purpose of which is to find combinations of selected design and maintenance parameters to maximise the reactor safety and minimise monetary expenditure. …”
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Modelling polymer electrolyte membrane fuel cells for dynamic reliability assessment by Andrey Vasilyev

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The interactions of astrocytes and fibroblasts with defined pore structures in static and perfusion cultures by Tao Sun, Peter S. Donoghue, Jennifer R. Higginson, Nikolaj Gadegaard, Susan C. Barnett, Mathis O. Riehle

“…Investigation of two different cell types (fibroblasts and cortical astrocytes) and how they interact with a range of pores (100e350 mm in diameter) for up to 50 days indicated that the cells either ‘covered’ or ‘bridged’ the pores. …”
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Grain extraction and microstructural analysis method for two-dimensional poly and quasicrystalline solids by Petri Hirvonen, Gabriel M. La Boissoniere, Zheyong Fan, C.V. Achim, Nikolas Provatas, Ken R. Elder, Tapio Ala-Nissila

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Honeycomb and triangular domain wall networks in heteroepitaxial systems by Ken R. Elder, Z. Chen, K.L.M. Elder, Petri Hirvonen, S.K. Mkhonta, S.C. Ying, E. Granato, Zhi-Feng Huang, Tapio Ala-Nissila

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Dynamic production system identification for smart manufacturing systems by Peter Denno, Charles Dickerson, Jennifer Harding

“…A coloured Petri net formalism appropriate to GP is developed and used to interpret the log. …”
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Advanced reliability analysis of polymer electrolyte membrane fuel cells in automotive applications by Michael Whiteley

“…Additionally, a degradation model based upon Petri-nets is the first degradation model to encompass a 1D performance model to predict fuel cell life time under specific drive cycles.…”
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Modelling and simulation in support of the design and construction of modular machine control system by Saparudin bin Ariffin

“…The unification has been achieved to support the design and implementation of hierarchical and modular control strategies which realised the concurrent operation of reusable and distributed machine control components, and the ability to handle growing complexity and support certain requirements of real-time control systems. Thus MlMCA enables mapping between 'what a machine should do' and 'how the machine does it' in a well-defined but flexible way designed to facilitate reconfiguration of machine systems. …”
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