International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Ultrasonic non-destructive method has been applied to investigate different types of optical polymeric materials. Attenuation coefficients and paths lengths of normal incidence shear waves in the materials have been determined by means of the pulse -echo multireflection technique. Comparison among acoustic properties of the examined polymers and the standard polymethyl methacrylate test sample at 5MHz frequency is carried out. Obtained results are used to qualify homogeneity and isotropy of studied materials.