Rare earth iron octagonal transducer
作者:
J. L. Butler,
S. J. Ciosek,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1980)
卷期:
Volume 67,
issue 5
页码: 1809-1811
ISSN:0001-4966
年代: 1980
DOI:10.1121/1.384258
出版商: Acoustical Society of America
数据来源: AIP
摘要:
A low‐frequency transducer in the form of an ’’octagonal ring’’ 10 in. in diameter and 6 in. high, driven by 16 rare earth Terfenol D (Tb0.3Dy0.7Fe2) rods, has been developed. The transducer resonates in a circumferential expansion mode at 775 Hz with a mechanicalQof 2.4. and an effective electromechanical coupling coefficient of 0.4. Results are presented for the transducer operated with and without a polarizing bias up to acoustic output powers of 80 and 350 W, respectively.
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