Search Results for author: K. Worden

Found 15 papers, 1 papers with code

On the use of Statistical Learning Theory for model selection in Structural Health Monitoring

no code implementations14 Jan 2025 C. A. Lindley, N. Dervilis, K. Worden

Whenever data-based systems are employed in engineering applications, defining an optimal statistical representation is subject to the problem of model selection.

Learning Theory Model Selection +1

Population-based wind farm monitoring based on a spatial autoregressive approach

no code implementations16 Oct 2023 W. Lin, K. Worden, E. J. Cross

Population-based structural health monitoring can further reduce the cost of health monitoring systems by implementing one system for multiple structures (i. e.~turbines).

Structural Health Monitoring

Towards a population-informed approach to the definition of data-driven models for structural dynamics

no code implementations19 Jul 2023 G. Tsialiamanis, N. Dervilis, D. J. Wagg, K. Worden

The current work is aimed at motivating the use of models which learn such relationships from a population of phenomena, whose underlying physics are similar.

Gaussian Processes Meta-Learning

On the hierarchical Bayesian modelling of frequency response functions

no code implementations12 Jul 2023 T. A. Dardeno, K. Worden, N. Dervilis, R. S. Mills, L. A. Bull

In this paper, a combined probabilistic FRF model is developed for a small population of nominally-identical helicopter blades, using a hierarchical Bayesian structure, to support information transfer in the context of sparse data.

A Meta-Learning Approach to Population-Based Modelling of Structures

no code implementations15 Feb 2023 G. Tsialiamanis, N. Dervilis, D. J. Wagg, K. Worden

The approach followed here is meta-learning, which is developed with a view to creating neural network models which are able to exploit knowledge from a population of various tasks to perform well in newly-presented tasks, with minimal training and a small number of data samples from the new task.

Gaussian Processes Meta-Learning +2

On an Application of Generative Adversarial Networks on Remaining Lifetime Estimation

no code implementations18 Aug 2022 G. Tsialiamanis, D. Wagg, N. Dervilis, K. Worden

The model is able to perform in a population-based SHM (PBSHM) framework, to take into account many past states of the damaged structure, to incorporate uncertainties in the modelling process and to generate potential damage evolution outcomes according to data acquired from a structure.

Prognosis Structural Health Monitoring

On generative models as the basis for digital twins

1 code implementation8 Mar 2022 G. Tsialiamanis, D. J. Wagg, N. Dervilis, K. Worden

Two different types of generative models are considered here.

On generating parametrised structural data using conditional generative adversarial networks

no code implementations3 Mar 2022 G. Tsialiamanis, D. J. Wagg, N. Dervilis, K. Worden

The cGAN is trained on data for some discrete values of the temperature within some range, and is able to generate data for every temperature in this range with satisfactory accuracy.

Generative Adversarial Network Structural Health Monitoring

On partitioning of an SHM problem and parallels with transfer learning

no code implementations3 Mar 2022 G. Tsialiamanis, D. J. Wagg, P. A. Gardner, N. Dervilis, K. Worden

A second approach to the problem is considered by adopting ideas from transfer learning (usually applied in much deeper) networks to see if a network trained on the simpler damage cases can help with feature extraction in the more difficult cases.

Structural Health Monitoring Transfer Learning

On the application of generative adversarial networks for nonlinear modal analysis

no code implementations2 Mar 2022 G. Tsialiamanis, M. D. Champneys, N. Dervilis, D. J. Wagg, K. Worden

The method is tested on simulated data from structures with cubic nonlinearities and different numbers of degrees of freedom, and also on data from an experimental three-degree-of-freedom set-up with a column-bumper nonlinearity.

Generative Adversarial Network

On risk-based active learning for structural health monitoring

no code implementations12 May 2021 A. J. Hughes, L. A. Bull, P. Gardner, R. J. Barthorpe, N. Dervilis, K. Worden

A primary motivation for the development and implementation of structural health monitoring systems, is the prospect of gaining the ability to make informed decisions regarding the operation and maintenance of structures and infrastructure.

Active Learning Descriptive +1

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