In the DMA test of polymeric material, a weak sinusoidal stress is applied at various frequencies and the strain inside a specimen of the known geometry is recorded as the temperature increases, which ultimately allows determination of the storage modulus E′, loss modulus E′′, and the damping factor tan δ, as well as the identification of relaxation events that occurred in the tested polymer sample following the transition processes due to the conformational changes of its macromolecular chains.