All Outputs (36)

A Bayesian assessment for railway track geometry degradation prognostics (2018)
Conference Proceeding
Chiachío, J., Chiachío, M., Prescott, D., & Andrews, J. (2018). A Bayesian assessment for railway track geometry degradation prognostics. In Proceedings of the 4th European Conference of the Prognostics and Health Management Society

Advanced PHM techniques have the potential to substantially reduce railway track maintenance costs while increasing safety and availability. However, there is still a significant lack of knowledge and experience in relation to suitable PHM models and... Read More about A Bayesian assessment for railway track geometry degradation prognostics.

A mathematical programming approach to railway network asset management (2018)
Conference Proceeding
Fecarotti, C., & Andrews, J. (2018). A mathematical programming approach to railway network asset management.

A main challenge in railway asset management is selecting the maintenance strategies to apply to each asset on the network in order to effectively manage the railway infrastructure given that some performance and safety targets have to be met under b... Read More about A mathematical programming approach to railway network asset management.

Vulnerability assessment modelling for railway networks (2018)
Conference Proceeding
Meesit, R., & Andrews, J. (2018). Vulnerability assessment modelling for railway networks. In Proceedings of the 10th IMA International Conference on Modelling in Industrial Maintenance and Reliability. https://doi.org/10.19124/ima.2018.001.16

Railway networks are prone to many different potential disruptive events such as technical failures (e.g. the failure of aging components), natural disasters (e.g. flooding) and intentional man-made disasters (e.g. trespass and suicide). Assessing th... Read More about Vulnerability assessment modelling for railway networks.

A reliability-based prognostics framework for railway track management (2017)
Conference Proceeding
Chiachío, J., Chiachío, M., Prescott, D., & Andrews, J. (2017). A reliability-based prognostics framework for railway track management.

Railway track geometry deterioration due to traffic loading is a complex problem with important implications in cost and safety. Without appropriate maintenance, track deterioration can lead to severe speed restrictions or disruptions, and in extreme... Read More about A reliability-based prognostics framework for railway track management.

Integration of prognostics at a system level: a Petri net approach (2017)
Conference Proceeding
Chiachío, M., Chiachío, J., Sankararaman, S., & Andrews, J. (2017). Integration of prognostics at a system level: a Petri net approach.

This paper presents a mathematical framework for modeling prognostics at a system level, by combining the prognostics principles with the Plausible Petri nets (PPNs) formalism, first developed in M. Chiach´ıo et al. [Proceedings of the Future Technol... Read More about Integration of prognostics at a system level: a Petri net approach.

A data mining tool for detecting and predicting abnormal behaviour of railway tunnels (2017)
Conference Proceeding
Vagnoli, M., Remenyte-Prescott, R., Thompson, D., Andrews, J., Clarke, P., & Atkinson, N. (2017). A data mining tool for detecting and predicting abnormal behaviour of railway tunnels.

The UK railway network is subjected to an electrification process that aims to electrify most of the network by 2020. This upgrade will improve the capacity, reliability and efficiency of the transportation system by providing cleaner, quicker and mo... Read More about A data mining tool for detecting and predicting abnormal behaviour of railway tunnels.

Towards a real-time Structural Health Monitoring of railway bridges (2017)
Conference Proceeding
Vagnoli, M., Remenyte-Prescott, R., & Andrews, J. (2017). Towards a real-time Structural Health Monitoring of railway bridges.

More than 350,000 railway bridges are present on the European railway network, making them a key infrastructure of the whole railway network. Railway bridges are continuously exposed to changing environmental threats, such as wind, floods and traffic... Read More about Towards a real-time Structural Health Monitoring of railway bridges.

Railway bridge fault detection using Bayesian belief network (2017)
Conference Proceeding
Vagnoli, M., Remenyte-Prescott, R., & Andrews, J. (2017). Railway bridge fault detection using Bayesian belief network.

Bridges are one of the most critical structures of the railway system. External loads may affect the bridge health state, and consequently their safety, availability and reliability can be improved by monitoring their condition and planning maintenan... Read More about Railway bridge fault detection using Bayesian belief network.

Bridge asset management using Petri-Nets (2017)
Conference Proceeding
Yianni, P., Neves, L. C., Rama, D., Andrews, J., & Dean, R. (2017). Bridge asset management using Petri-Nets.

Management of a diverse portfolio of assets is a demanding and complex task. Although extensive research has been carried out in bridge asset management models, the model developed in this study contains flexibility which is able to model a vast arra... Read More about Bridge asset management using Petri-Nets.

Optimising strategy selection for the management of railway assets (2017)
Conference Proceeding
Fecarotti, C., & Andrews, J. (2017). Optimising strategy selection for the management of railway assets.

In the railway industry a main concern is how to manage efficiently and effectively the railway assets under budget constraints. Optimal asset management involves decision making and selection of the best inspection, maintenance and renewal intervent... Read More about Optimising strategy selection for the management of railway assets.

An information theoretic approach for knowledge representation using Petri nets (2016)
Conference Proceeding
Chiachío, M., Chiachío, J., Prescott, D., & Andrews, J. (2016). An information theoretic approach for knowledge representation using Petri nets.

A new hybrid approach for Petri nets (PNs) is proposed in this paper by combining the PNs principles with the foundations of information theory for knowledge representation. The resulting PNs have been named Plausible Petri nets (PPNs) mainly because... Read More about An information theoretic approach for knowledge representation using Petri nets.

Railway bridge asset management using a Petri-Net modelling approach (2016)
Conference Proceeding
Yianni, P. C., Rama, D., Neves, L. C., & Andrews, J. D. (2016). Railway bridge asset management using a Petri-Net modelling approach.

Infrastructure assets can be difficult to manage due to the array of defects, the variety of environmental situations and the different operational scenarios. A number of studies have tried to model bridge asset management. The main focus of these mo... Read More about Railway bridge asset management using a Petri-Net modelling approach.

Performance modelling of fuel cell systems through Petri nets (2016)
Conference Proceeding
Fecarotti, C., & Andrews, J. (in press). Performance modelling of fuel cell systems through Petri nets.

This paper introduces a model based on the Petri net method for the performance evaluation of fuel cell systems during operation. The model simulates the operation of the fuel cell stack and its supporting systems by taking into account the causal re... Read More about Performance modelling of fuel cell systems through Petri nets.

System-wide assessment of intervention strategies for railway infrastructure (2014)
Conference Proceeding
Rama, D., & Andrews, J. D. (2014). System-wide assessment of intervention strategies for railway infrastructure.

The existing railway infrastructure exhibits faster degradation rates and requires more maintenance effort as a result of increased utilisation. At the same time, due to increased numbers of freight and commuter trains obtaining access to the railway... Read More about System-wide assessment of intervention strategies for railway infrastructure.

Modelling the effects of asset management decisions on a railway track section (2014)
Conference Proceeding
Prescott, D., & Andrews, J. D. (in press). Modelling the effects of asset management decisions on a railway track section. In Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance. https://doi.org/10.4203/ccp.104.166

This paper reports on the development of a Markov model that uses real-world deterioration, inspection and maintenance data to assess railway track asset management. The model allows both asset management personnel and track maintenance engineers to... Read More about Modelling the effects of asset management decisions on a railway track section.

Road network modelling for maintenance planning (2014)
Conference Proceeding
Yang, C., Remenyte-Prescott, R., & Andrews, J. (2014). Road network modelling for maintenance planning.

In this paper a novel road network flow model is presented, suitable for modelling both motor-way and urban roads. A road network is modelled using a directed graph, consisting of typical roads and junctions, with different traffic flow inputs throug... Read More about Road network modelling for maintenance planning.