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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Languages: English
Types: Unknown
Subjects: TJ
Acoustic Emission (AE) is a promising technique for Structural Health Monitoring applications\ud (SHM) and involves detecting the ultrasonic stress waves generated by damage initiation growth in a\ud structure. One advantage of AE for SHM is the ability to locate AE sources. Delta-t mapping was developed\ud to overcome the limitations of the conventional AE location technique. The disadvantage of the delta-t\ud mapping is that it requires the manual collection of experimental training data. This paper explores the\ud possibility of using local interaction simulation approach (LISA) to generate simulated training data for the\ud algorithm. The results for locating a fatigue crack are presented for both the experimental and simulated\ud training data and showed average errors in source location of 3mm and 8mm respectively. This\ud demonstrates the potential of using simulated training data for the mapping technique which would ultimately\ud reduce implementation of delta-t mapping on large scale structures.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] [2] [3] [4] Speckmann, H. and H. Roesner, Structural Health Monitoring: A Contribution to the Intelligent Aircraft Structure, in ECNDT 2006.
    • Miller, R.K. and P. McIntire, NDT Handbook Vol 5. 1987: American Society for Non-destructive Testing.
    • Widespread Fatigue Damage in Military Aircraft, 1995.
    • Skinner, G., Maintaining mature military air transport aircraft. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 1996. 210(2): p. 129-134.
    • Baxter, M.G., et al., Delta T source location for acoustic emission. Mechanical Systems and Signal Processing, 2007. 21(3): p.
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