On self-organising diagnostics in impact sensing networks

  • Authors:
  • Mikhail Prokopenko;Peter Wang;Andrew Scott;Vadim Gerasimov;Nigel Hoschke;Don Price

  • Affiliations:
  • CSIRO Information and Communication Technology Centre, North Ryde, Australia;CSIRO Information and Communication Technology Centre, North Ryde, Australia;CSIRO Industrial Physics, North Ryde, Australia;CSIRO Information and Communication Technology Centre, North Ryde, Australia;CSIRO Industrial Physics, North Ryde, Australia;CSIRO Industrial Physics, North Ryde, Australia

  • Venue:
  • KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part IV
  • Year:
  • 2005

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Abstract

Structural health management (SHM) of safety-critical structures requires multiple capabilities: sensing, assessment, diagnostics, prognostics, repair, etc. This paper presents a capability for self-organising diagnosis by a group of autonomous sensing agents in a distributed sensing and processing SHM network. The diagnostics involves acoustic emission waves emitted as a result of a sudden release of energy during impacts and detected by the multi-agent network. Several diagnostic techniques identifying the nature and severity of damage at multiple sites are investigated, and the self-organising maps (Kohonen neural networks) are shown to outperform the standard k-means algorithm in both time- and frequency domains.