Number of the records: 1

Experimental approach to fracture assessment of multilayer pipes

SYSNO ASEP	0332100
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	O - Ostatní
Title	Experimental approach to fracture assessment of multilayer pipes
Title	Experimentální přístup k hodnocení lomových vlastností vícevrstvých trubek
Author(s)	Nezbedová, E. (CZ) Knésl, Zdeněk (UFM-A) Hutař, Pavel (UFM-A)_{RID, ORCID}
Number of authors	3
Source Title	Tagungsband 12 Problemseminar. - Merseburg : Polymer service GmbH, 2009 - ISBN 978-3-86829-170-4
Pages	s. 231-235
Number of pages	5 s.
Action	Tagung problemseminar /12./ : Deformation und Bruchverhalten von Kunststoffen
Event date	24.06.2009-26.06.2009
VEvent location	Merseburg
Country	DE - Germany
Event type	EUR
Language	eng - English
Country	DE - Germany
Keywords	multilayer pipes ; brittle failure ; non-homogenous specimens
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	GC101/09/J027 GA ČR - Czech Science Foundation (CSF)
	GA106/09/0279 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
Annotation	There is no general protection against failure of pipes, but the probability of failure can be reduced by a proper choice of materials and geometry. That is the reason why the multilayer-pipes became the task to be solved not only from the scientific point of view. In the presented work two and three layer pipes the new type of specimen taken directly from the pipes were suggested and tested. For two-layer pipe the critical value of J was estimated. The J is independent of the crack growth direction in the case when the normal line of the fracture surface is parallel with tangential direction. The difference between J value estimated at 23 and -20°C, respectively laid in scatter range. The influence of protective layer is insignificant if the crack length is up to the half of the thickness of the pipe.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2010

Number of the records: 1