Theoretical Calculation of a Focused Acoustic Field from a Linear Phased Array on a Concave Cylindrical Transducer

2011 ◽  
Vol 28 (10) ◽  
pp. 104302 ◽  
Author(s):  
Li-Li Yu ◽  
Wen-Ve Shou ◽  
Chun Hui
Keyword(s):  
Theoretical Calculation ◽  
Acoustic Field ◽  
Phased Array ◽  
Cylindrical Transducer

Acoustic Field Calculation of Ultrasonic Phased Array Concave Cylindrical Transducer

2014 ◽  
Vol 716-717 ◽  
pp. 1111-1113
Author(s):  
Li Jiu Wang ◽  
Shuang Li
Keyword(s):  
Acoustic Field ◽  
Coordinate Transformation ◽  
Phased Array ◽  
Computation Method ◽  
Field Calculation ◽  
Circular Arc ◽  
Sommerfeld Integral ◽  
Field Computation ◽  
Ultrasonic Phased Array ◽  
Cylindrical Transducer

The focus law and acoustic field computation method about circular arc linear phased array have been discussed in the paper. Acoustic field of transducers is given by the use of the coordinate transformation and an approximation with rectangle element instead of circular arc element, and was calculated using Rayleigh-Sommerfeld Integral.

Numerical Simulation of Acoustic Field for the Miniature Cylindrical Transducer with a Rectangular Hole

2011 ◽  
Vol 421 ◽  
pp. 739-742
Author(s):  
Li Li Yu ◽  
Jin Hua Zhao ◽  
Quan Zhou Zhao ◽  
Chun Hui
Keyword(s):  
Numerical Simulation ◽  
Acoustic Field ◽  
Focal Plane ◽  
Optimization Design ◽  
Acoustic Pressure ◽  
Pressure Amplitude ◽  
Hole Size ◽  
Rectangular Hole ◽  
Cylindrical Transducer ◽  
Focusing Properties

In this paper the characteristics of acoustic field for miniature cylindrical focused transducer with a hole was studied in order to instruct the optimization design of the transducer for both realizing visualization and improving the treatment effect. Then the acoustic field was simulated numerically with different parameters of hole. It is found that position of focus is almost unchanged but acoustic pressure amplitude declines. In addition the performance of transverse focusing for the focal plane and levels length of acoustic pressure are lowered. Moreover, if size of transducer and rigidity of material permit, the area and ratio of width to height for the hole should be reduced appropriately to improve the focusing properties. And it is deduced that area and ratio of width to height for the cylinder can be increased to achieve the same therapeutic effect with a fixed hole size.

The Effect of Cross-Coupling in the Acoustic Field Generated by a Phased Array Transducer

1996 ◽  
pp. 479-482
Author(s):  
A. Gubbini ◽  
C. Lamberti ◽  
P. Palchetti ◽  
A. Sarti
Keyword(s):  
Acoustic Field ◽  
Phased Array ◽  
Cross Coupling ◽  
Array Transducer
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