Point load effect on the buried polyolefin pipes lifetime
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00465119" target="_blank" >RIV/68081723:_____/16:00465119 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26210/16:PU117914
Result on the web
<a href="http://dx.doi.org/10.1002/pen.24194" target="_blank" >http://dx.doi.org/10.1002/pen.24194</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/pen.24194" target="_blank" >10.1002/pen.24194</a>
Alternative languages
Result language
angličtina
Original language name
Point load effect on the buried polyolefin pipes lifetime
Original language description
Polymer pipe lifetime is conventionally estimated by internal pressure test. However, important for service are also other types of loading as: additional bending, different type of external loading from sand embedding, or effect of the residual stresses. One of the dangerous type of loading is so-called “point load caused, for example, by stones in the soil. The present article is focused on the numerical prediction of this effect on the pipe lifetime. For the lifetime estimation of a polymer pipe under point loading, an approach based on combination of numerical calculation and experimental measurements was used. A special numerical algorithm, which optimizes modeled crack front shape according to the real one during simulation of crack propagation, was proposed. Finally, an analytical relationship for the estimation of fracture parameters of propagating crack across the pipe wall crucial for the pipe lifetime estimation is presented in the paper. A significant reduction of the residual lifetime was found for the cracked pipe loaded by additional point load (consideration of indentation effects of stones in the soil) in comparison with pipe loaded by internal pressure only. The approach presented contributes to the safer service of polyolefin pipes.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JL - Fatigue and fracture mechanics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer Engineering and Science
ISSN
0032-3888
e-ISSN
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Volume of the periodical
56
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
79-86
UT code for WoS article
000366840300010
EID of the result in the Scopus database
2-s2.0-84949293372