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Plane wave source with minimal harmonic distortion for investigating nonlinear acoustic properties
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10.1121/1.2739442
/content/asa/journal/jasa/122/1/10.1121/1.2739442
http://aip.metastore.ingenta.com/content/asa/journal/jasa/122/1/10.1121/1.2739442
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Diagram of the stainless-steel delay line apparatus. The transducer is a -diam contact transducer, held in place with a plastic fixture to the face of the steel cylinder. Simulation of the fundamental field component is shown inside the delay line.

Image of FIG. 2.
FIG. 2.

Simulation of the diffraction pattern through a 304-stainless steel delay line into lossless water medium, for (a) the fundamental component, and (b) the second harmonic. The top portion of each figure component illustrates the magnitude of the meridian plane slice of the field (black is the maximum amplitude and white is zero). The bottom portion of each component shows the amplitude along the propagation axis of the beam. The phase velocity used in the simulation corresponds to measured values of in steel and in water. The particle velocity amplitudes are normalized to that of the fundamental component at zero axial distance.

Image of FIG. 3.
FIG. 3.

(Color online) Simulation of the diffraction pattern through a 304-stainless steel delay line into lossless water medium, for (a) the fundamental component, and (b) the second harmonic, in a manner analogous to Fig. 2.

Image of FIG. 4.
FIG. 4.

Comparison of expected beam pattern from simulation (left) with hydrophone measurement of the field (right) in a meridian plane beginning beyond the steel-water interface, for a fundamental signal. The separation between the hash marks on the right side of each graph corresponds to the diameter of a receiving transducer.

Image of FIG. 5.
FIG. 5.

(a) Comparison of hydrophone measurements and simulation results, for both the fundamental and second harmonic, in the axial direction. (b) The normalized transverse profile for the fundamental, away from a -diam piston source, propagating through of stainless steel and of water. (c) Normalized transverse profile of the second harmonic amplitude at the same location as (b).

Image of FIG. 6.
FIG. 6.

Comparison of expected beam pattern from simulation (left) with hydrophone measurement of the field (right) in a meridian plane beginning beyond the steel-water interface, for a fundamental signal. The separation between the hash marks on the right side of each graph corresponds to the diameter of a receiving transducer.

Image of FIG. 7.
FIG. 7.

(a) Comparison of hydrophone measurements and simulation results, for both the fundamental and second harmonic, in the axial direction. (b) The normalized transverse profile for the fundamental, away from a -diam piston source, propagating through of stainless steel and of water. (c) Normalized transverse profile of the second harmonic amplitude at the same location as (b).

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/content/asa/journal/jasa/122/1/10.1121/1.2739442
2007-07-01
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Plane wave source with minimal harmonic distortion for investigating nonlinear acoustic properties
http://aip.metastore.ingenta.com/content/asa/journal/jasa/122/1/10.1121/1.2739442
10.1121/1.2739442
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