Reconstruction of Fouling Distribution from Aggregate Observations

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Ultrasonic guided waves (UGWs) can propagate over long distances with little attenuation and are suitable for non-destructive evaluation of a large area. However, localizing fouling inside the closed systems (e.g., pipes, engines) remains to be challenging. Here we propose to use UGWs that propagate along the pipe circumference along multiple helical paths, thus, providing denser structural information without increasing the number of sensors. When the path crosses fouled area the UGWs propagation properties change, generating unique features into each helical wave. Such aggregate information together with the known structural geometry are then used to fit a latent variable Gaussian process to recover the fouling distribution map in a probabilistic manner.
Original languageEnglish
Title of host publication2022 IEEE International Ultrasonics Symposium (IUS)
Number of pages4
Publication date2022
ISBN (Print)978-1-6654-7813-7
ISBN (Electronic)978-1-6654-6657-8
Publication statusPublished - 2022
MoE publication typeA4 Article in conference proceedings
Event2022 IEEE International Ultrasonics Symposium (IUS) - Venice, Italy
Duration: 10 Oct 202213 Oct 2022

Fields of Science

  • 114 Physical sciences
  • ultrasonic
  • ultrasound
  • Non-destructive evaluation
  • guided acoustic waves
  • 113 Computer and information sciences
  • Gaussian processes

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