The Effect of Residual Stress on the Process of Crack Growth Rate Determination in Polymer Pipes

0469139 - ÚFM 2018 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Poduška, Jan - Hutař, Pavel - Kučera, J. - Sadílek, J. - Frank, A. - Pinter, G. - Náhlík, Luboš
The Effect of Residual Stress on the Process of Crack Growth Rate Determination in Polymer Pipes.
Materials Structure & Micromechanics of Fracture VIII. Zürrich: Trans Tech Publications, 2017 - (Šandera, P.), Roč. 258, č. 2017 (2017), s. 174-177. Solid State Phenomena, 258. ISBN 978-3-03835-626-4. ISSN 1662-9779.
[MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./. Brno (CZ), 27.06.2016-29.06.2016]
Grant CEP: GA MŠMT LM2015069
Institucionální podpora: RVO:68081723
Klíčová slova: polyethylene pipe * slow crack growth * CRB test * residual stress * lifetime
Obor OECD: Audio engineering, reliability analysis

Accelerated tests of the polyethylene pipes are necessary for the pipe lifetime calculations. Accepted methodology for prediction of slow crack grow rate in these materials is fatigue testing of CRB (cracked round bar) specimens. This paper deals with the FEM modelling of the crack propagation during the CRB test under the influence of residual stresses. The crack growth is described based on the stress intensity factor and Paris-Erdogan law. The purpose of this research is to determine, if the residual stress influences crack behavior during CRB test.
Trvalý link: http://hdl.handle.net/11104/0271187