Аннотация:Annotation. In this study, a dynamic method was used to study the physical and mechanicalcharacteristics of materials in the mode of freely damped torsional vibrations. This research methodconsiders materials with model representations of the atomic-molecular structure. In the work wewill use a brand of epoxy resin DER-330 «Dow Chemical Company». All peaks of dissipativelosses in the spectrum λ = f (T) appear in different temperature ranges. For each of the peaks oflosses in the spectrum λ = f (T) of the hardener TETA on the temperature dependence of thefrequency ν = f (T), an anomalous change in the value of the frequency of the oscillatory processexcited in the hardener is observed. Similar studies λ = f (T) and ν = f (T) were carried out forepoxy resin DER-330. The internal friction spectrum is less complex than that of TETA hardenerand consists of four loss peaks that do not split. Accordingly, certain abnormal frequency deviationsfrom the predicted theoretical value are observed for these dissipative losses on the dependence ν =f (T).