The advanced polymer structures contain material interfaces, which can influence its final lifetime. Important topic of the research is than study changes of the crack behaviour due to material non-homogeneity. Therefore, general goal of the project lies in the development and suggestion of reliable techniques for estimation of a residual life time of multilayer polymeric structures. Slow crack growth, which can be described by the corresponding fracture mechanics parameters, plays an important part in this estimation. In the case of viscoelastic polymer materials the current methodology will be developed. The correlation between the experimental data and results of relevant numerical model will be presented. The results enable to estimate material's composition with respect to the optimal mechanical properties of multilayer structure. (en)
Zobecnění popisu creepového šíření trhliny pro vícevrstvé polymerní struktury s akcentem na vliv rozhranní na výslednou životnost polymeru. Návrh zkrácených experimentálních zkoušek pro stanovení životnosti vrstevnatých prostředí na bázi získaných numerických simulací.