Acoustic emission localization in composites using the signal power method and embedded transducers

Mario Emanuele De Simone; Stefano Cuomo; Francesco Ciampa; Michele Meo; Sandro Nitschke; Andreas Hornig; Niels Modler

doi:10.1117/12.2515467

1 April 2019 Acoustic emission localization in composites using the signal power method and embedded transducers

Mario Emanuele De Simone, Stefano Cuomo, Francesco Ciampa, Michele Meo, Sandro Nitschke, Andreas Hornig, Niels Modler

Proceedings Volume 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII; 109711O (2019) https://doi.org/10.1117/12.2515467
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

This work proposes a novel technique for the localization of low-velocity impacts in composites without a-priori knowledge of the mechanical properties nor the speed of propagating waves, thus overcoming current limitations of existing impact localization methods. The proposed algorithm is based on the estimation of the power of acoustic emissions generated by impacts on a composite plate instrumented with embedded piezo-transducers. The signal power values calculated at sparse sensor locations are interpolated over the sample by using radial basis function networks. The impact coordinates on the specimen surface are estimated by a center-of-gravity method based on the interpolated power values. Experimental tests were performed by using both an instrumented impact hammer and a drop tower. The results obtained showed the validity of the presented approach, which was able to identify the impact locations with high level of accuracy.

Conference Presentation

Citation Download Citation

Mario Emanuele De Simone, Stefano Cuomo, Francesco Ciampa, Michele Meo, Sandro Nitschke, Andreas Hornig, and Niels Modler "Acoustic emission localization in composites using the signal power method and embedded transducers", Proc. SPIE 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII, 109711O (1 April 2019); https://doi.org/10.1117/12.2515467

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