Influence of the Interface and the Additional Layer on the Stable Crack Propagation through Polyolefin Bilayered Structures

摘要: Abstract In this work, model structures coextruded from polyolefin materials with different resistance against elastic and plastic deforma- tion (tensile modulus work of deformation up to the yield point) as well stable crack initiation propagation were experimentally analyzed using multiple-specimen (R) curve approach under quasistatic loading conditions. Additionally, numerical calculations done finite element method. R ratios calculated where material 1 in bilayer was related single-layer so on. Depending on mechanical performance both layers, additional layer highly affects kinetics inside first when propagates across bilayered structure. Because is size shape zone energy dissipated inside, mismatch (R ratios) correlated deformation.