ultrasonic wave


Also found in: Dictionary, Thesaurus, Medical, Financial.

ultrasonic wave

[¦əl·trə′sän·ik ′wāv]
(acoustics)
A sound wave that has a frequency above about 20,000 hertz.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Time of flight of various ultrasonic wave paths in the sample were calculated theoretically [8], [12], as in (3)
As is well known, the use of ultrasonic waves provides a uniform distribution of droplet diameters.
The ultrasonic wave is generated on the transduction area.
Decrease in peak to peak amplitude is evident when there is a scattering of the ultrasonic wave upon loading.
The specimen is grasped by the robot manipulator and moves in sequence to pass the specified point, and the ultrasonic wave is excited at the same time so that the reflection echo of inspected object can be collected by the A/D acquisition card.
Ultrasonic wave attenuation occurs during the process of ultrasonic wave transmission in media; the attenuation is the loss of ultrasonic vibrational energy [24].
The ultrasonic wave velocity (v) was calculated using the following equation [9]:
Meanwhile, LG's innovative ultrasonic wave technology has been declared 'safe for use' by Germany's TUV NORD.
While the ultrasonic wave travels through the medium, its amplitude exponentially diminishes with the propagation distance.
The main goal of this research is to investigate the performance of degradation of hydrocarbon contaminants in soil by using the synthesized NZVI assisted by ultrasonic wave. The effect of ultrasonic power, NZVI and H2O2 concentration, temperature on degradation efficiency are also explored in this research.
Scanning electron microscopic analysis revealed that the starch granules largely disappeared after ultrasonic treatment, which likely occurred because the ultrasonic wave broke or gelatinized the starch and widened the pits of the cell wall so that the starch could easily flow out resulting in slightly reduced mold growth.
The ultrasonic nonlinear characteristics of each specimen were evaluated by measuring the ultrasonic nonlinear parameter [beta] from the amplitudes of fundamental and second harmonic frequency components in the transmitted ultrasonic wave. After the ultrasonic test, tensile strengths and elongations were obtained by the tensile test to compare with the parameter [beta].

Full browser ?