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  1. The table below lists typical longitudinal wave ultrasonic velocities in a variety of common materials that can be measured with ultrasonic thickness gauges. Note that this is only a general guide.

  2. Acoustic impedance and sound velocity for different materials - Data from Alan Selfridgae.

  3. material in/sec m/sec acrylic 120000 3048.00 aluminum 17st 245600 6238.24 aluminum 2024 252200 6405.88 aluminum 250 250000 6350.00 brass 150800 3830.32 brass (naval) 174000 4419.60 brass (yellow) 165800 4211.32 bronze, phosphor 137800 3500.12 copper 183900 4671.06 cu/ni 80/20 194000 4927.60 duplex 2205 220472 5599.99 hastaloy 244000 6197.60 incoloy 899 290400 7376.16 inconel 224400 5699.76

  4. c. Velocity of Ultrasound and Wavelength The velocity of ultrasound (c) in a perfectly elastic material at a given temperature and pressure is constant. The relation between c, f, l and T is given by Equations (2) and (3): Eqn. 2 Eqn. 3 l = Wavelength c = Material Sound Velocity f = Frequency T = Period of time

  5. Ultrasonic velocity is directly connected to the elastic moduli and the density of a solid material. By analyzing ultrasonic shear and longitudinal wave velocities, the Young?s modulus and shear modulus can be determined and by this the Poisson ratio.

  6. Ultrasonic velocity Table Author: Trinity Institute of NDT Technology Subject: Nondestructive testing-NDT Training institute Keywords

  7. Ultrasonic Sound Velocity Chart Material Sound Velocity Inch/µSecond Metres/second Air 0.013 330 Aluminium 0.250 6300 Alumina Oxide 0.390 9900 Beryllium 0.510 12900 Boron Carbide 0.430 11000 Brass 0.170 4300 Cadmium 0.110 2800 Copper 0.180 4700 Glass(crown) 0.210 5300 ...

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