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Accelerated test for PE 100 and PE 100 RC pipes grades
- 1.0354137 - ÚFM 2011 RIV DE eng C - Conference Paper (international conference)
Nezbedová, E. - Hutař, Pavel - Knésl, Zdeněk - Sadílek, J.
Accelerated test for PE 100 and PE 100 RC pipes grades.
Polymeric Materials Halle/Saale. Halle-Wittenberg: Martin Luther University, 2010 - (Michler, G.), s. 1-6. ISBN 978-3-86829-282-4.
[Polymeric Materials 2010. Halle/Saale (DE), 15.09.2010-17.09.2010]
R&D Projects: GA ČR GA106/08/1409; GA ČR GC101/09/J027; GA ČR GA106/09/0279
Institutional research plan: CEZ:AV0Z20410507
Keywords : HDPE * PENT test * COD
Subject RIV: JL - Materials Fatigue, Friction Mechanics
The failure mode called long time brittle failure (due to small crack growth – SCG) limits the lifetime of plastic pipes. Nowadays there are two accelerated tests (PENT and FNCT) that enable to estimate the lifetime of HDPE using in plastics pipes. For unimodal grade the time to failure according these accelerated tests is about tens hours, for bimodal grade PE 100 it is roughly thousands hours and for the new PE 100 RC grade is greater than 1 year. For the HDPE pipes grade with higher resistance against SCG some modification or alternatively new tests should be developed that enable even for these materials to obtain the results in relatively short time. In this contribution we focused mainly on some modification of PENT and FNCT and possible correlation between mechanical and structural test.
Permanent Link: http://hdl.handle.net/11104/0193205
Number of the records: 1