Institute of Physics of Materials AS CR, v. v. i. > Projects > Description of the slow crack growth in polymer materials under complex loading conditions
Lach R., Krolopp T., Hutař P., Nezbedová E., Grellmann W.: Short-Term Stable Crack Propagation through Polyolefin Single and Bilayered Structures - Influence of Welding, Composition and Direction of Crack Propagation. Solid State Phenom. 258 (2017) 538-541
Majer Z., Ševčík M., Náhlík L., Hutař P.: Point load effect determination for different pressure pipe SDR series. Key Eng. Mater. 627 (2015) 373-376
Mikula J., Hutař P., Nezbedová E., Lach R., Arbeiter F., Ševčík M., Pinter G., Grellmann W., Náhlík L.: On crack propagation in the welded polyolefin pipes with and without the presence of weld beads. Mater. & Design 87 (2015) 95-104
Poduška J., Kučera J., Hutař P., Ševčík M., Křivánek J., Sadílek J., Náhlík L.: The effect of specimen size on the determination of residual stress in polymer pipe wall . Key Eng. Mater. 627 (2015) 141-144
Ševčík M., Arbeiter F., Hutař P., Pinter G., Náhlík L.: The effect of soil load on fracture behaviour of three-layer polymer pipe for non-pressurised applications. Key Eng. Mater. 627 (2015) 197-200
Hutař P., Ševčík M., Lach R., Knésl Z., Náhlík L., Grellmann W.: A Description of Local Material Properties Close to a Butt Weld. Key Eng. Mater. 586 (2014) 146-149
Ševčík M., Poduška J., Náhlík L., Kučera J., Hutař P.: Inaccuracy in Residual Stress Estimation and Its Influence on the Residual Lifetime of Polymer Pipe. Key Eng. Mater. 592-593 (2014) 165-168
Hutař P., Ševčík M., Náhlík L., Frank A., Kučera J., Pinter G.: Numerical lifetime prediction of polymer pipes taking into account residual stress. Key Eng. Mater. 577-578 (2014) 169-172
Majer Z., Zouhar M., Ševčík M., Náhlík L., Hutař P.: Pressure pipe damage: Numerical estimation of point load effect II. Key Eng. Mater. 577-578 (2014) 533-536
Lach R., Krolopp T., Hutař P., Grellmann W.: Influence of the interface and the additional layer on the stable crack propagation through polyolefin bilayered structures. Procedia Mater. Sci. 3 (2014) 867-872
Hutař P., Ševčík M., Náhlík L., Zouhar M., Knésl Z.: Assessment of the stability of a surface crack in laminates. Mech. Comp. Materials 50 (2014) 9-16
Poduška J., Kučera J., Hutař P., Ševčík M., Křivánek J., Sadílek J., Náhlík L.: Residual stress distribution in extruded polypropylene pipes. Polymer Testing 40 (2014) 88-98
Zouhar M., Hutař P., Ševčík M., Náhlík L.: Pressure pipe damage: Numerical estimation of point load effect. Key Eng. Mater. 525-526 (2013) 177-180
Nezbedová E., Hutař P., Zouhar M., Knésl Z., Sadílek J., Náhlík L.: The applicability of the Pennsylvania Notch Test for a new generation of PE pipe grades. Polymer Testing 32 (2013) 106-114
Hutař P., Zouhar M., Náhlík L., Ševčík M., Máša B.: Multilayer polymer pipes failure assessment based on a fracture mechanics approach. Eng. Fail. Anal. 33 (2013) 151-162
Hutař P., Ševčík M., Frank A., Náhlík L., Kučera J., Pinter G.: The effect of residual stress on polymer pipe lifetime. Eng. Fract. Mech. 108 (2013) 98-108
Zouhar M., Hutař P., Náhlík L., Ševčík M., Knésl Z.: The effect of critical distance in stability condition for the crack at the interface between two materials. Eng. Mech. 19 (2012) 155-164
Description of the slow crack growth in polymer materials under complex loading conditions
| Investigator | prof. Ing. Pavel Hutař, Ph.D. |
| Number of Project | P108/12/1560 |
| Agency | Grantová agentura České republiky |
| Duration | 2011-12-31 - 2014-12-30 |
Anotace |
| Due to increase of the long term application of the polymer materials process of slow stable crack growth became important scientific topic. Therefore, the general goal of the project lies in the accurate description of the slow crack propagation in the case of polymeric structure under complex loading conditions taking into account residual stresses. Slow crack growth can be described by the corresponding fracture mechanics parameters and plays an important part in estimation of this life time. The correlation between experimental data and numerical model is presented. The results enable to estimate effect of the residual stresses, change of material properties or material nonhomogenity on the residual lifetime of the polymeric structures. |
2017
Lach R., Krolopp T., Hutař P., Nezbedová E., Grellmann W.: Short-Term Stable Crack Propagation through Polyolefin Single and Bilayered Structures - Influence of Welding, Composition and Direction of Crack Propagation. Solid State Phenom. 258 (2017) 538-541
2015
Majer Z., Ševčík M., Náhlík L., Hutař P.: Point load effect determination for different pressure pipe SDR series. Key Eng. Mater. 627 (2015) 373-376
Mikula J., Hutař P., Nezbedová E., Lach R., Arbeiter F., Ševčík M., Pinter G., Grellmann W., Náhlík L.: On crack propagation in the welded polyolefin pipes with and without the presence of weld beads. Mater. & Design 87 (2015) 95-104
Poduška J., Kučera J., Hutař P., Ševčík M., Křivánek J., Sadílek J., Náhlík L.: The effect of specimen size on the determination of residual stress in polymer pipe wall . Key Eng. Mater. 627 (2015) 141-144
Ševčík M., Arbeiter F., Hutař P., Pinter G., Náhlík L.: The effect of soil load on fracture behaviour of three-layer polymer pipe for non-pressurised applications. Key Eng. Mater. 627 (2015) 197-200
2014
Hutař P., Ševčík M., Lach R., Knésl Z., Náhlík L., Grellmann W.: A Description of Local Material Properties Close to a Butt Weld. Key Eng. Mater. 586 (2014) 146-149
Ševčík M., Poduška J., Náhlík L., Kučera J., Hutař P.: Inaccuracy in Residual Stress Estimation and Its Influence on the Residual Lifetime of Polymer Pipe. Key Eng. Mater. 592-593 (2014) 165-168
Hutař P., Ševčík M., Náhlík L., Frank A., Kučera J., Pinter G.: Numerical lifetime prediction of polymer pipes taking into account residual stress. Key Eng. Mater. 577-578 (2014) 169-172
Majer Z., Zouhar M., Ševčík M., Náhlík L., Hutař P.: Pressure pipe damage: Numerical estimation of point load effect II. Key Eng. Mater. 577-578 (2014) 533-536
Lach R., Krolopp T., Hutař P., Grellmann W.: Influence of the interface and the additional layer on the stable crack propagation through polyolefin bilayered structures. Procedia Mater. Sci. 3 (2014) 867-872
Hutař P., Ševčík M., Náhlík L., Zouhar M., Knésl Z.: Assessment of the stability of a surface crack in laminates. Mech. Comp. Materials 50 (2014) 9-16
Poduška J., Kučera J., Hutař P., Ševčík M., Křivánek J., Sadílek J., Náhlík L.: Residual stress distribution in extruded polypropylene pipes. Polymer Testing 40 (2014) 88-98
2013
Zouhar M., Hutař P., Ševčík M., Náhlík L.: Pressure pipe damage: Numerical estimation of point load effect. Key Eng. Mater. 525-526 (2013) 177-180
Nezbedová E., Hutař P., Zouhar M., Knésl Z., Sadílek J., Náhlík L.: The applicability of the Pennsylvania Notch Test for a new generation of PE pipe grades. Polymer Testing 32 (2013) 106-114
Hutař P., Zouhar M., Náhlík L., Ševčík M., Máša B.: Multilayer polymer pipes failure assessment based on a fracture mechanics approach. Eng. Fail. Anal. 33 (2013) 151-162
Hutař P., Ševčík M., Frank A., Náhlík L., Kučera J., Pinter G.: The effect of residual stress on polymer pipe lifetime. Eng. Fract. Mech. 108 (2013) 98-108
2012
Zouhar M., Hutař P., Náhlík L., Ševčík M., Knésl Z.: The effect of critical distance in stability condition for the crack at the interface between two materials. Eng. Mech. 19 (2012) 155-164
