What is ultrasonic power?
Ultrasonic power refers to the amount of work done by the object in unit time, that is, power is a physical quantitythat describes how fast or slow work is done. The amount of work is certain, and the shorter the time, the greaterthe power value.
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ucsonic
5/13/20242 min read


Ultrasonic power refers to the amount of work done by the object in unit time, that is, power is a physical quantitythat describes how fast or slow work is done. The amount of work is certain, and the shorter the time, the greaterthe power value. The formula for power is: Power = work/time. Power is a physical quantity that represents thespeed or slowness of work. The work done per unit time is called power and is represented by P.
n the process of ultrasonic transmission, when the ultrasonic wave is transmitted to the originally static medium, themedium particles vibrate back and forth near the equililbrium position, resulting in compression and expansion in themedium. lt can be considered that ultrasonic waves make the medium obtain vibrational kinetic energy anddeformation potential energy. The sound energy obtained by ultrasonic disturbance is the sum of vibrational kineticenergy and deformation potential energy.
With the propagation of ultrasonic waves in the medium also accompanied by the propagation ofenergy, if we take a small volume element (dV) in the sound field, let the original volume of themedium be Vo, the pressure is po, and the density is p0. The kinetic energy of the volume element(dV) due to ultrasonic vibration ΔEk: ΔEk= (pOVo) u2/2AEk is the kinetic energy, J; u is the particlevelocity, m/s; p0 is the medium density, kg/m3; Vo is the original volume, m3.
An important feature of ultrasound is its power, ultrasound has a much stronger power than ordinarysound waves, which is one of the important reasons why ultrasound can be widely used in many fields.
When ultrasonic waves reach a medium, the effect of ultrasonic waves makes the medium molecules vibrate, andits vibration frequency is the same as the frequency of ultrasonic waves, the freguency ofvibration ofthemedium molecules determines the speed of vibration, the higher the frequency, the greater the speed. Theenergy obtained by the medium molecule due to vibration is not only related to the mass ofthe mediummolecule, but also proportional to the square of the vibration velocity ofthe medium molecule. Therefore, thehigher the frequency of the ultrasonic wave, the higher the energy obtained by the medium molecules. Thefrequency of ultrasonic waves is much higher than that of ordinary sound waves, so ultrasonic waves can makethe medium molecules obtain a lot of energy, and the effect of ordinary sound waves on the medium molecules isvery small. in other words, the energy of ultrasound is much larger than that of sound waves, and it can supplyenough energy to the medium molecules.
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