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In this work, an omnidirectional SH0 mode transducer is proposed. It is based on a simple arrangement of common piezoelectric ceramics attached to a steel disc, and is capable of… Click to show full abstract
In this work, an omnidirectional SH0 mode transducer is proposed. It is based on a simple arrangement of common piezoelectric ceramics attached to a steel disc, and is capable of generating a relatively high ratio of SH0 to other modes omnidirectionally. A parametric study of the components which constitute the transducer was performed through finite element modelling in order to characterize and investigate the influence of geometry on its frequency–response. The validation of modelling results was performed through the construction of two transducers with different configurations. Analysis of the relationship between the intensity of each mode generated in a plate and the characteristics of the SH0 mode emission allowed the identification of frequencies that presented the most desirable response.
Journal Title: Journal of Nondestructive Evaluation
Year Published: 2018
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