Recent content by johnotoole3

  1. J

    Detection of longitudinal and shear acoustic waves in solids

    Does no one out there have any infor for the above problem or even where would i find it. I have been reading books and papers and all i can find is that the velocity difference between the two wave modes nothing on frequency. A source of information on acoustic waveforms would be greatly...
  2. J

    Longitudinal waves in circuits?

    Filters work by blocking certain frequencies or bands of frequencies, not amplitude. Generally filters are used in electronics not wave mechanics, so for example you could have a sensors that converts an acoustic wave in a solid material(its like vibration) into an electronic signal and all...
  3. J

    Ultrasound transmitter component- longitudinal or transverse waves?

    That message was in relation to the question form coffee&TV about whether a lonitundinal wave or a traverse wave is produced by a ultrasound transmitter. But i have a question you might have seen, how does one differentiate between P waves and S waves. I want to measure the time delay between...
  4. J

    Ultrasound transmitter component- longitudinal or transverse waves?

    pulsed or contiuous wave. Probably pulsed, but if it looks like a typical sine wave a sine wave is being produced, you will have to check with vendor of manufacturer for spec sheet to be sure, but the single that appears on the oscilloscope should be the signal that is being produced, if your...
  5. J

    Ultrasound transmitter component- longitudinal or transverse waves?

    if the ultrasound signal is propagating (transmitting) through the air or water then the wave mode is longitudinal,(shear/traverse waves don't propagate in liquids or gases) but if it is propagating through a solid it depends on how the ultrasound transmitter is exciting the solid. For example...
  6. J

    Detection of longitudinal and shear acoustic waves in solids

    I want to be able to differentiate between longitudinal(P) and Shear(S) waves in solids. Using one Acoustic emission (AE) senor placed 2 to 20 cm form a AE source e.g. a stress induced crack or pencil lead test, how can one detect both the P and S waves and determine what part of the receive...
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