PHY02 Speed of Sound in Solids

Speed ​​of Sound in Solids Determination of the longitudinal speed of sound in acrylic at two different sound frequencies The aim of the experiment is to investigate and determine the longitudinal speed of sound in acrylic at two different sound frequencies. To do this, time-of-flight measurements are carried out on three acrylic cylinders of different lengths using the pulse-echo method (ultrasonic A-scan). Keywords: propagation of ultrasonic waves, acoustic impedance, reflection, sound propagation time, sound velocity, pulse-echo method, ultrasound A-scan Ultrasonic waves propagate in a medium at a speed that depends on the material and can be frequency-dependent. In gases and liquids, sound propagates only in the form of longitudinal waves. In contrast, transverse waves can also occur in solids due to their elastic properties. Transverse and longitudinal waves generally propagate at different speeds. The speed of sound of the longitudinal waves generated in a solid when sound is cou