Ultrasonic waves through pressure

In summary, if you had an ultrasonic transmitter and receiver mounted within a pressurized container, the wave signal would be affected as the pressure is varied.
  • #1
vinniewryan
32
0
If you had an ultrasonic transmitter and receiver mounted within a pressurized container, what would happen to the wave signal as the pressure is changed within the container? I understand it's all just air moving, but would there be any obvious change to the ultrasonic wave as the air pressure is varied?
 
Physics news on Phys.org
  • #2
To a first appropximation, the speed of sound in a gas is not dependent of the pressure - just on the temperature. But if you increase the pressure then this could increase the temperature. This would increase the speed (and increase the wavelength) so you might expect some refraction effects. It would depend on the actual set up.
 
  • #3
The basic set up would be to emit an ultrasonic wave through a balloon with a receiver on the other side (or the same side), and based on the observed alteration in the received wave form, phase shift, amplitude, rise and fall edges, etc, be able to determine the pressure within the balloon. Temprature is too iffy for this experiment to be successful unfortunately, although if I had a temprature sensor monitoring the ambient temprature outside of the balloon and use the ultrasound to estimate the temp within the balloon within a certain accuracy, maybe it's an option, but I could see balloon size/volume of air having some sort of unreliable effect on that method. Thoughts?
 
  • #4
Are we dealing here with an ultrasonic "shock wave", or one that is oscillating?
Please clarify.
 
  • #5
It would be an oscillating ultrasonic wave. Also, if the air within the balloon is a different temperature than the air outside of the balloon, how would this effect the result? Is the pressure of gas relative to temperature?
 
  • #6
It does not matter which method you choose whether it is the use of the professional services, trapping or the more traditional method the fact is these pests can do damage to our property and homes or businesses. When you invest in your home and properties, you do not want an unwanted pest to move in, help themselves to your walls, foundations, and cause damage that will cost your more money.
 
  • #7
JeremyGilbert said:
It does not matter which method you choose whether it is the use of the professional services, trapping or the more traditional method the fact is these pests can do damage to our property and homes or businesses. When you invest in your home and properties, you do not want an unwanted pest to move in, help themselves to your walls, foundations, and cause damage that will cost your more money.

I can't make this fit into the subject in question. is it in the right place?
 

1. What are ultrasonic waves?

Ultrasonic waves are sound waves with frequencies higher than the upper limit of human hearing, which is approximately 20,000 hertz (Hz). They are typically above 20,000 Hz and can reach up to several gigahertz (GHz).

2. How are ultrasonic waves produced?

Ultrasonic waves are produced by using a transducer to convert electrical energy into mechanical vibrations. The transducer contains a piezoelectric crystal that vibrates at a high frequency when an electrical current is applied.

3. What is the role of pressure in transmitting ultrasonic waves?

Pressure plays a crucial role in the propagation of ultrasonic waves. As the waves pass through a medium, they create areas of high and low pressure. This pressure variation allows the waves to travel through the medium and transmit energy.

4. What are the applications of ultrasonic waves through pressure?

Ultrasonic waves through pressure have various applications in different industries. They are commonly used in medical imaging, such as ultrasound scans, as well as in industrial processes like non-destructive testing and cleaning. They are also used in navigation and communication systems.

5. What are the potential risks associated with ultrasonic waves through pressure?

While ultrasonic waves are generally considered safe for humans, prolonged exposure to high-intensity waves can cause tissue damage. It is important to follow safety guidelines and proper precautions when working with ultrasonic equipment. Additionally, ultrasonic waves can also interfere with electronic devices, so caution must be taken in certain environments.

Similar threads

Replies
4
Views
752
  • Mechanics
Replies
5
Views
1K
Replies
15
Views
528
Replies
10
Views
1K
Replies
14
Views
19K
Replies
7
Views
824
Replies
9
Views
2K
Replies
11
Views
1K
Replies
27
Views
2K
Back
Top