23 March 2015 Multi-helical ultrasonic imaging for corrosion monitoring of cylindrical structures
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In this paper an algorithm for acoustic emission source localization in cylindrical shell structures is presented. The proposed algorithm is based on the propagation of uncertainty through the Unscented Transform. Time of arrival of desired wave modes and wave velocity are measured parameters, whose uncertainties are processed through the algorithm, which provides mean and covariance statistics for the predicted location. Results of the algorithm using the Unscented Transform are compared to a Monte Carlo simulation, and this is accomplished through the Kullback-Leibler divergence. The results support a strong correlation between the two, however, the Unscented Transform demonstrates superior computational speed.
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Brennan Dubuc, Brennan Dubuc, Ehsan Dehghan Niri, Ehsan Dehghan Niri, Salvatore Salamone, Salvatore Salamone, "Multi-helical ultrasonic imaging for corrosion monitoring of cylindrical structures", Proc. SPIE 9438, Health Monitoring of Structural and Biological Systems 2015, 943803 (23 March 2015); doi: 10.1117/12.2084037; https://doi.org/10.1117/12.2084037

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