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The applicability of the Pennsylvania Notch Test for a new generation of PE pipe grades

SYSNO ASEP	0398693
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	The applicability of the Pennsylvania Notch Test for a new generation of PE pipe grades
Author(s)	Nezbedová, E. (CZ) Hutař, Pavel (UFM-A)_{RID, ORCID} Zouhar, Michal (UFM-A) Knésl, Zdeněk (UFM-A) Sadílek, J. (CZ) Náhlík, Luboš (UFM-A)_{RID, ORCID}
Number of authors	6
Source Title	Polymer Testing. - : Elsevier - ISSN 0142-9418 Roč. 32, č. 1 (2013), s. 106-114
Number of pages	9 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	PENT test ; Lifetime prediction ; HDPE ; Slow crack growth ; Fracture mechanics
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	GAP108/12/1560 GA ČR - Czech Science Foundation (CSF)
	ED1.1.00/02.0068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UFM-A - RVO:68081723
UT WOS	000314448100016
DOI	10.1016/j.polymertesting.2012.09.009
Annotation	The failure mode termed long time brittle failure (due to slow crack growth – SCG) limits the lifetime of plastic pipes. There are now two main accelerated tests (PENT and FNCT) that enable us to estimate the lifetime of HDPE used in plastics pipes. For unimodal grades, the time to failure corresponding to these accelerated tests is about ten hours, for bimodal grade PE 100 it is roughly a thousand 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 make it possible even for these materials to obtain the results required in a relatively short time. In this contribution we focus mainly on the PENT test and the possibility of the utilization of a structural analysis as well as a numerical approach for prediction of the lifetime of a new generation of PE grades.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2014

Number of the records: 1