Life time estimation of the multilayer plastic pipes

0353970 - ÚFM 2011 RIV CH eng J - Článek v odborném periodiku
Zouhar, Michal - Vallet, L. - Hutař, Pavel - Náhlík, Luboš
Life time estimation of the multilayer plastic pipes.
Key Engineering Materials. 452-543, - (2011), s. 33-36. ISSN 1662-9795
Grant CEP: GA ČR GA106/09/0279; GA ČR GC101/09/J027
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: polymer pipes * high density polyethylene * slow crack growth * fracture parameters
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

In the contribution solution of special fracture mechanics problems connected with multilayer plastic pipes was investigated. The assumptions of linear elastic fracture mechanics were accepted. A complex three-dimensional numerical model of multi-layer pipe system consisting of main (functional) pipe and protective layers has been suggested and numerically solved by finite element method. Two basic problems connected with lifetime expectation of multilayer pipe system have been considered and discussed, namely: question of fracture mechanics description of multilayered pipe system and corresponding measurements of the material properties. The suggested approach can help for more accurate estimation of the multilayer pipe damage.
Trvalý link: http://hdl.handle.net/11104/0193070