Guided Waves (GWs)-based defect detection in plate-like structures using piezoelectric transducers (PZT) has become a critical and reliable method for ensuring structural integrity. To address the challenges of heavy, complex, and difficult-to-maintain PZT networks, Frequency Steerable Acoustic Transducers (FSATs) have been proposed as a promising alternative. FSATs can simplify hardware while reducing costs by employing a frequency-dependent spatial filtering effect that allows for beam steering through excitation frequency variation. The new generation of FSATs also eliminates the 180° ambiguity issue that previous FSATs have experienced and enables 360° circular scanning for defect detection. Thanks to this unique feature of FSATs, when employed within a pulse-echo method, the captured signal exclusively displays reflections originating from the areas of damage. Therefore, this study aims to conduct a numerical investigation on the new generation of FSATs for defect detection in plate structures.

Mohammadgholiha M., De Marchi L. (2023). Defect Detection in Plate-like Structures using Piezoceramic Frequency Steerable Acoustic Transducers. IEEE Computer Society [10.1109/IUS51837.2023.10307022].

Defect Detection in Plate-like Structures using Piezoceramic Frequency Steerable Acoustic Transducers

Mohammadgholiha M.;De Marchi L.
2023

Abstract

Guided Waves (GWs)-based defect detection in plate-like structures using piezoelectric transducers (PZT) has become a critical and reliable method for ensuring structural integrity. To address the challenges of heavy, complex, and difficult-to-maintain PZT networks, Frequency Steerable Acoustic Transducers (FSATs) have been proposed as a promising alternative. FSATs can simplify hardware while reducing costs by employing a frequency-dependent spatial filtering effect that allows for beam steering through excitation frequency variation. The new generation of FSATs also eliminates the 180° ambiguity issue that previous FSATs have experienced and enables 360° circular scanning for defect detection. Thanks to this unique feature of FSATs, when employed within a pulse-echo method, the captured signal exclusively displays reflections originating from the areas of damage. Therefore, this study aims to conduct a numerical investigation on the new generation of FSATs for defect detection in plate structures.
2023
IEEE International Ultrasonics Symposium, IUS
1
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Mohammadgholiha M., De Marchi L. (2023). Defect Detection in Plate-like Structures using Piezoceramic Frequency Steerable Acoustic Transducers. IEEE Computer Society [10.1109/IUS51837.2023.10307022].
Mohammadgholiha M.; De Marchi L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/953741
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