Ultrasonic Measurement of Elastic Modulus of Kelvin Foam
1 Undergraduate School of Mechatronics Engineering, Korea University of Technology and Education, South Korea
2 School of Mechatronics Engineering, Korea University of Technology and Education, South Korea
a Corresponding author: email@example.com
Elastic modulus of 3D-printed Kelvin foam plate is investigated by measuring the acoustic wave velocity of 1 MHz ultrasound. An isotropic tetrakaidecahedron foam of 3 mm unit cell is designed and printed layer upon layer to fablicate a Kelvin foam plate of 14mm thickness by 3D CAD/printer using ABS plastic. The Kelvin foam plate is filled completely with paraffin wax for impedance matching, so that acoustic wave may propagate through the porous foam plate. The acoustic wave velocity of the foam plate is measured using the time-of-flight (TOF) method to calculate the elastic modulus of the Kelvin foam plate based on acousto-elasticity.
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