ultrasonic wave


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ultrasonic wave

[¦əl·trə′sän·ik ′wāv]
(acoustics)
A sound wave that has a frequency above about 20,000 hertz.
References in periodicals archive ?
Physically, if an ultrasonic wave having a sufficient amplitude and given frequency is introduced into a nonlinear medium, the fundamental waveform is distorted as it propagates due to the velocity variation, which is dependent on the wave amplitude; thus, harmonic components of the fundamental wave are generated.
Measurement sunder High Pressure of Ultrasonic Wave Velocity in Glycerol", IEEE International Ultrasonic Symposium Proceedings, 1567-1570.
Poisson's ratio, elastic modulus, and shear modulus will be measured by the ultrasonic wave propagating velocity detection.
Meanwhile, LG's innovative ultrasonic wave technology has been declared 'safe for use' by Germany's TUV NORD.
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.
A possible explanation may be that the ultrasonic wave broke or gelatinized starch grains and simultaneously caused pit breakdown so that the starch could easily flow out from the pits of the cell wall.
MODELS OF THE ULTRASONIC WAVE PROPAGATION IN THE WAVEGUIDES
Pressing the "anti-mosquito button" on the unit's remote control causes a speaker within the air conditioner to generate inaudible ultrasonic waves at a frequency of 30 kHz to 100 kHz.
The absorptivity was measured by dividing [alpha] by the square of the frequency (2MHz) of the ultrasonic wave propagated into the liquid media, i.
In this letter, we treat the thermodynamic property of metal under action of the ultrasonic waves.
Parameter and testing condition of experiments Parameter and testing condition Value Frequency of ultrasonic wave (kHz) 20 Power of ultrasonic (Watt) 462 ; 528 ; 616 Particle size of test soil (mm) 0.
It works using an intermittent electromagnetic signal and ultrasonic wave noise to drive pests away.

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