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Sutton, Yvonne; McBride, Karne and Pye, Stephen
(2006).
DOI: https://doi.org/10.1088/0031-9155/51/14/008
Abstract
This paper describes a cost-effective method for measuring acoustic power using a radiation force balance. The device is based around a long established balance design with a gantry arrangement fitted with an absorbing target. The notion of this balance design is that it can easily be constructed from materials that would be readily available within a clinical or industrial environment. The mini-balance was calibrated using a transfer standard against an NPL Reference balance, so a comparison of the performance between the two systems could be assessed. The measurements were completed at 1 MHz and 3 MHz and over the acoustic power range of 1 W to 15 W. The results show the acoustic power measured on the mini-balance to be within 5% of the reference measurements made on the NPL Balance. A separate systematic uncertainty budget is also presented based on studies made on the balance and on similar systems. The overall expanded uncertainty was calculated to be within 14% at 1 W level, decreasing with increasing power level to 7.4% above 5 W.
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About
- Item ORO ID
- 38930
- Item Type
- Journal Item
- ISSN
- 1361-6560
- Academic Unit or School
- Faculty of Science, Technology, Engineering and Mathematics (STEM)
- Copyright Holders
- © 2006 IoP Publishing Ltd
- Depositing User
- Yvonne Sutton