Considerations for practical neural network application to a damage detection problem

S.G. Pierce, K. Worden, G. Manson

Research output: Contribution to journalArticlepeer-review


The application of a multilayer perceptron (MLP) neural network to a damage location problem on a GNAT aircraft wing is considered. The problems associated with effective network training and evaluation are discussed, focussing on ensuring good generalisation performance of the network to the classification of new data. Both conventional Maximum Likelihood and Bayesian Evidence based training techniques are considered and a simple thresholding technique is presented to aid in the rejection of poorly regularised network structures. Examples are presented for an artificial simple 2 class problem (drawn from a Gaussian distribution) and a real 9 class problem on the GNAT aircraft wing.
Original languageEnglish
Pages (from-to)151-158
Number of pages7
JournalKey Engineering Materials
Publication statusPublished - 2005


  • damage detection
  • neural networks
  • regularisation
  • generalisation
  • thresholding
  • power systems


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