Influence of 3D Printing on the Elastic Properties of ABS Polymer Filament Samples

This work shows the results of experimental study of the impact of 3D printing with 100% filling on the elastic properties of samples made of ABS filament. The dependence of the deformation and the relative change in the velocity of elastic waves on the applied mechanical stress (up to rupture) for the initial and 3D-printed samples of ABS polymer were measured simultaneously by both the static method and the Thurston-Bragger method. As a result of the experiment, linear and non-linear Young’s moduli and the 2nd order non-linear acoustic parameter were calculated. It was established that the selected 3D printing mode almost does not change the strength characteristics of the ABS polymer, and the plastic characteristics are slightly improved. A difference was found in the behavior of nonlinear parameters for the original and 3D-printed samples under mechanical loading, which is associated with changes in the internal structure of the samples caused by 3D printing. For the 3D printed sample, a decrease in the nonlinear parameter was found as the load increased.