Designing a Hollow Langevin Transducer for Ultrasonic Coring
A number of architectures for a hollow Langevin ultrasonic transducer are proposed and evaluated. One of these is optimised by finite element modelling and is then manufactured and analysed experimentally. The preload on the transducer ceramics is increased and the effect on the performance is measu...
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| Veröffentlicht in: | Applied Mechanics and Materials 2010-06, Vol.24-25 (Advances in Experimental Mechanics VII), p.65-70 |
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| container_end_page | 70 |
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| container_issue | Advances in Experimental Mechanics VII |
| container_start_page | 65 |
| container_title | Applied Mechanics and Materials |
| container_volume | 24-25 |
| creator | Harkness, P. Cardoni, Andrea Russell, J. Lucas, Margaret |
| description | A number of architectures for a hollow Langevin ultrasonic transducer are proposed and evaluated. One of these is optimised by finite element modelling and is then manufactured and analysed experimentally. The preload on the transducer ceramics is increased and the effect on the performance is measured. At maximum preload the results of an experimental modal analysis are used to determine the natural frequency and response of both the operating longitudinal mode and unwanted bending modes. The performance of the hollow transducer is compared to a solid commercial transducer containing the same volume of piezoceramic material. The efficiency is shown to be comparable. Higher ultrasonic displacement amplitudes are achieved with the hollow transducer although a lower Q-factor is found. |
| doi_str_mv | 10.4028/www.scientific.net/AMM.24-25.65 |
| format | Article |
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| ispartof | Applied Mechanics and Materials, 2010-06, Vol.24-25 (Advances in Experimental Mechanics VII), p.65-70 |
| issn | 1660-9336 1662-7482 1662-7482 |
| language | eng |
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| source | Scientific.net Journals |
| subjects | Bending Ceramics Coring Displacement Mathematical analysis Resonant frequency Transducers |
| title | Designing a Hollow Langevin Transducer for Ultrasonic Coring |
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