Institute of Physics of Materials AS CR, v. v. i. > Projects > Fracture damage mechanism of multilayer polymer body

Fracture damage mechanism of multilayer polymer body

Investigatorprof. Ing. Pavel Hutař, Ph.D.
Number of Project106/09/0279
AgencyGrantová agentura České republiky
Duration2008-12-31 - 2011-12-30

Anotace
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 liesin 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 materials composition with respect to the optimal mechanical properties of multilayer structure.

2012

Zouhar M., Hutař P., Náhlík L., Knésl Z.: Basic modes of crack propagation through an interface in polymer layered structure. Key Eng. Mater. 488-489 (2012) 162-165

Hutař P., Zouhar M., Nezbedová E., Sadílek J., Žídek J., Náhlík L., Knésl Z.: Constraint effect on the slow crack growth in polyethylene. Int. J. Struct. Integr. 3 (2012) 118-126

Ševčík M., Hutař P., Knésl Z., Náhlík L., Zouhar M.: Estimation of the critical configuration of a crack arrested at the interface between two materials. Comp. Mater. Sci. 64 (2012) 225-228


2011

Zouhar M., Vallet L., Hutař P., Náhlík L.: Life time estimation of the multilayer plastic pipes. Key Eng. Mater. 452-453 (2011) 33-36

Zouhar M., Hutař P., Náhlík L., Knésl Z.: Effect of the time dependent material properties on the crack behaviour in the interface of two polymeric materials. Mech. Comp. Materials 47 (2011) 203-210

Hutař P., Ševčík M., Náhlík L., Pinter G., Frank A., Mitev I.: A numerical methodology for lifetime estimation of HDPE pressure pipes. Eng. Fract. Mech. 78 (2011) 3049-3058

Zouhar M., Hutař P., Náhlík L., Knésl Z.: Damage of multilayer polymer materials under creep loading. Key Eng. Mater. 465 (2011) 153-156