Abstract
Damages produced by impacts can compromise structural integrity. Precise localization of the damage is fundamental to improve structural monitoring systems accuracy and reliability. A method based on the estimation of elastic waves Direction of Arrival (DoA) in plate-like structures by means of a DFT-Based Continuous Wavelet Transform (CWT) decomposition is proposed. To tackle the dispersive behaviour of guided waves, simultaneous multiband signal filtering in the Wavelet domain is performed. Subsequently, the cross-correlation method is applied to each computed scale to evaluate the Difference Time of Arrival (DToA). Finally, DoA is extracted applying an averaging procedure across scales to the arc-tangent of the ratio between the DToA among specific active areas of the sensors. This approach has been experimentally validated through measurements on an aluminum plate, after a calibration stage was performed.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Ebrahimkhanlou A, Dubuc B, Salamone S (2016) Damage localization in metallic plate structures using edge-reflected lamb waves. Smart Mater Struct 25(8):085035
De Marchi L, Marzani A, Speciale N, Viola E (2011) A passive monitoring technique based on dispersion compensation to locate impacts in plate-like structures. Smart Mater Struct 20(3):035021
Kundu T, Das S, Jata K (2009) Detection of the point of impact on a stiffened plate by the acoustic emission technique. Smart Mater Struct 18(3):035006
Garofalo A, Testoni N, Marzani A, De Marchi L (2016) Wavelet-based Lamb waves direction of arrival estimation in passive monitoring techniques. In: IEEE international ultrasonics symposium (IUS). IEEE Press, Tours (FR), pp 1–4
Garofalo A, Testoni N, Marzani A, De Marchi L (2017) Multiresolution wavelet analysis to estimate Lamb waves direction of arrival in passive monitoring techniques. In: IEEE workshop on environmental, energy, and structural monitoring systems (EESMS). IEEE Press, Milan (IT), pp 1–6
Kundu T, Nakatani H, Takeda N (2012) Acoustic source localization in anisotropic plates. Ultrasonics 52(6):740–746
Marsdem M (1974) Cubic spline interpolation of continuous functions. J Approx Theory 10:103–111
Acknowledgements
This research has been funded by INAIL within the framework BRIC/2016 IDÂ =Â 15, SMARTBENCH project.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Malatesta, M.M., Testoni, N., Marzani, A., De Marchi, L. (2020). Guided Waves Direction of Arrival Estimation Based on Calibrated Multiresolution Wavelet Analysis. In: Saponara, S., De Gloria, A. (eds) Applications in Electronics Pervading Industry, Environment and Society. ApplePies 2019. Lecture Notes in Electrical Engineering, vol 627. Springer, Cham. https://doi.org/10.1007/978-3-030-37277-4_42
Download citation
DOI: https://doi.org/10.1007/978-3-030-37277-4_42
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-37276-7
Online ISBN: 978-3-030-37277-4
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)