(ВПІ КПІ ім. Ігоря Сікорського, 2022) Felde, Kh.; Soltys, I.; Havryliak, M.; Motrych, A.; Ushenko, Yu.; Dvorzhak, V.; Liniuchev, O.
The article presents the basics of the method of correlation spatial-frequency filtering of maps of phase distributions of polyethylene films. Using the method of statistical analysis of the structure of spatial-frequency filtered polarization mapsof polymer films, a set of methods and criteria for diagnosingchanges in the birefringence of packaging materials has beensubstantiated and tested.