Device to measure materials' vibration?

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SUMMARY

This discussion focuses on measuring the vibration and frequency of materials, specifically addressing the concepts of mechanical resonance and continuous random vibrations. Participants suggest using devices such as microphones and strain gauges to capture high and low-frequency vibrations, respectively. Techniques for exciting the material include sinusoidal input, impulses, or random noise, which can help extract oscillatory information through correlation methods. The conversation highlights the importance of understanding both the nature of the vibrations and the appropriate measurement tools.

PREREQUISITES
  • Understanding of mechanical resonance and its applications.
  • Familiarity with microphones and strain gauges for vibration measurement.
  • Knowledge of excitation techniques such as sinusoidal input and impulse testing.
  • Basic principles of correlation techniques for data analysis.
NEXT STEPS
  • Research the use of microphones for high-frequency vibration measurement.
  • Explore strain gauge applications for measuring low-frequency vibrations.
  • Study excitation methods for materials, focusing on sinusoidal and impulse inputs.
  • Learn about correlation techniques for extracting oscillatory data from vibration measurements.
USEFUL FOR

Engineers, material scientists, and researchers interested in vibration analysis and measurement techniques for various materials.

oem7110
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Someone tells me that every objects has its own vibration, such as stone, water ...
When bee is flying, the sound of vibration can be heard at different speed, bbbbbbb ...
but not all vibration can be heard by us.
Does anyone have any suggestions on what kinds of device can measure material's vibration / frequency?
Thanks in advance for any suggestions
 
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I'm not sure if you are talking about the continuous random vibrations of atoms within an object or an objects resonance. If it's the former a thermometer could be used, not quite sure for the latter.
 
oem7110 said:
Does anyone have any suggestions on what kinds of device can measure material's vibration / frequency?
Are you talking about mechanical resonance? (Though I don't know how that could apply to liquid water!)

To measure resonant frequency, you could rest something like a microphone insert on the body to record for high frequencies, or attach a strain gauge for lower frequencies. You then excite the body somehow or other, e.g., by sinusoidal input, or impulses, or even by random noise using correlation techniques to extract the desired oscillatory info.
 

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