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Rosli, M. H.; Edwards, R. S. (Rachel S.); Dutton, B. (Ben); Johnson, C. G. (Colin G.); Cattani, P. (2010)
Publisher: American Institute of Physics
Languages: English
Types: Unknown
Subjects: QC, TA
Electromagnetic acoustic transducers (EMATs) have been used to generate and detect Rayleigh waves in order to identify surface cracking in aluminium bars and rails. B-scans produced during scans of samples were used to determine the presence of surface defects. Additionally, the differences between signal enhancements due to wave interference at the crack produced by normal (900) and angled cracks in the B-scans were used to classify samples in order to decide an appropriate depth calibration curve for depth estimation. Classification was done using an image processing algorithm that selected the best features for classification, and used these to identify similar patterns in unclassified B-scans.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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