Spatial Distribution of Acoustic Radiation Force for Non-Contact Modal Excitation
Spatial Distribution of Acoustic Radiation Force for Non-Contact Modal Excitation
复制标题
非接触模态激励声辐射力的空间分布
DOI:
10.1007/978-3-319-30249-2_12
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Raisbeck, Cole
中科院分区:
文献类型:
--
作者:
Huber, Thomas A;Algren, Mikaela;Raisbeck, Cole
In modal testing, a common excitation method is a transducer in mechanical contact with the object under test. However, for some structures it is desirable to excite vibrations without physical contact. One promising excitation technique is the acoustic radiation force. However, a challenge in using this technique is that the acoustic radiation force is spread out over a finite-diameter focal region. We describe a method to directly measure the spatial distribution of this force. An ultrasound transducer emitted sine waves with frequencies of, for examplef1= 600.610 kHz andf2= 600 kHz; the resulting radiation force had a component at the difference frequencyf1-f2= 610 Hz. A MicroAcoustic Instruments BAT6 ultrasound transducer was focused to an approximately 2 mm diameter spot on a 19.6 by 8.1 by 0.37 mm clamped-free brass cantilever with a 610 Hz fundamental frequency. A vibrometer measured the response as this focus spot traversed the edge of the cantilever. This enabled determination of the distribution of the acoustic radiation force being delivered by the transducer. This may be helpful in future studies that involve modeling the force applied to a structure using the acoustic radiation force.
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DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
M. Fatemi;M. Zeraati
通讯作者:
M. Zeraati
DOI:
10.1121/1.1616921
发表时间:
2003
期刊:
The Journal of the Acoustical Society of America
影响因子:
--
作者:
F. Mitri;P. Trompette;J. Chapelon
通讯作者:
J. Chapelon
DOI:
--
发表时间:
2013
期刊:
Experimental techniques (Westport, Conn.)
影响因子:
--
作者:
T. M. Huber;N. Beaver;J. Helps
通讯作者:
J. Helps
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
T. M. Huber;Spencer Batalden;W. J. Doebler
通讯作者:
W. J. Doebler
影响因子:
2.4
作者:
T. M. Huber;N. Beaver;J. Helps
通讯作者:
J. Helps