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.
Defect Detection in Plate-like Structures using Piezoceramic Frequency Steerable Acoustic Transducers / Mohammadgholiha M.; De Marchi L.. - ELETTRONICO. - (2023), pp. 1-4. (Intervento presentato al convegno 2023 IEEE International Ultrasonics Symposium, IUS 2023 tenutosi a Montreal, CANADA nel 2023) [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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
