Characterisation of the Vibration of an Ultrasonic Transducer for Guided Waves Applications

Zennaro, Marco; Haig, Alex; O'Boy, Daniel; Walsh, Stephen J.

doi:10.1007/978-3-319-75605-9_30

Cited by 1 publication

(1 citation statement)

References 4 publications

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“…Such a method has shown excellent agreement against experimental results, and a physical insight into the characteristic of the transducer is readily available [20,21]. The modelling was carried out using Comsol Multiphysics [28], which is currently used for ultrasonic transducers and guided waves studies [29,30,31,32]. The experimental analysis was replicated numerically, to predict the time of arrival, to study the purity of the latter and compare the output with a simple point source model.…”

Section: Numerical Analysis Of the Transient Behaviour For Configumentioning

confidence: 99%

Characterization and Design Improvement of a Thickness-Shear Lead Zirconate Titanate Transducer for Low Frequency Ultrasonic Guided Wave Applications

Zennaro

O'Boy

Lowe

et al. 2019

Sensors

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Thickness-shear transducers for guided wave testing have been used in industry for over two decades and much research has been conducted to improve the resolution and sensitivity. Due to a geometric feature of the current state-of-the art transducer, there is an out-of-plane component in the propagation direction of the fundamental shear horizontal mode which complicates the signal interpretation. In such case, complex signal processing techniques need to be used for mode discrimination to assess the structural health with higher precision. Therefore, it is important to revise the transducer design to eliminate the out-of-plane components in the propagation direction of fundamental shear horizontal mode. This will enhance the mode purity of fundamental shear horizontal mode for its application in guided wave inspection. A numerical investigation has been conducted on a 3 mm thick 2 m circular steel plate to understand the behaviour and the characteristics of the state-of-the-art thickness-shear transducer. Based on the results, it is noted that the redesigning the electrode arrangement will suppress the out-of-plane components on the propagation direction of the fundamental shear horizontal mode. With the aid of this information current state-of-the-art transducers were redesigned and tested in laboratory conditions using the 3D Laser Doppler Vibrometer. This information will aid future transducer designers improve the resolution of thickness-shear transducers for guided wave applications and reduce the weight and cost of transducer array by eliminating the need of additional transducers to suppress spurious modes.

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Section: Numerical Analysis Of the Transient Behaviour For Configumentioning

confidence: 99%

Characterization and Design Improvement of a Thickness-Shear Lead Zirconate Titanate Transducer for Low Frequency Ultrasonic Guided Wave Applications

Zennaro

O'Boy

Lowe

et al. 2019

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

Characterisation of the Vibration of an Ultrasonic Transducer for Guided Waves Applications

Cited by 1 publication

References 4 publications

Characterization and Design Improvement of a Thickness-Shear Lead Zirconate Titanate Transducer for Low Frequency Ultrasonic Guided Wave Applications

Characterization and Design Improvement of a Thickness-Shear Lead Zirconate Titanate Transducer for Low Frequency Ultrasonic Guided Wave Applications

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