Effect of constraint on fatigue crack propagation near threshold in medium carbon steel
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F06%3A00044935" target="_blank" >RIV/68081723:_____/06:00044935 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Effect of constraint on fatigue crack propagation near threshold in medium carbon steel
Original language description
The influence of constraint caused by different specimen geometry on fatigue crack growth in the threshold region is analyzed and a phenomenological model is proposed to correlate the fatigue crack propagation rate under different constraint levels. Theapproach is based on an application of two-parameter fracture mechanics and the corresponding calculations are performed according to the finite element method. The constraint level is quantified by the value of T-stress. The fatigue crack propagation rate is then expressed in terms of the stress intensity factor K and T-stress. Plastic zone size is considered as a controlling variable for near threshold fatigue crack behavior and a simple procedure making it possible to estimate the changes of the fatigue crack propagation rate in the threshold region due to different constraint level quantitatively is formulated. It is concluded that experimental values correspond well with those numerically predicted.
Czech name
Vliv constraintu na prahové hodnoty šíření trhliny pro oceli se středním obsahem uhlíku
Czech description
V práci je analyzován vliv constraintu na šíření únavových trhlin zejména v oblasti blízké prahovým hodnotám. Metodika založená na dvouparametrové lomové mechanice je využita pro zahrnutí vlivu constraintu do popisu rychlosti šíření únavových trhlin. Dále je diskutován vliv plasticity a vliv plasticky indukovaného zavírání trhliny na její další šíření.
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
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2006
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Computational Materials Science
ISSN
0927-0256
e-ISSN
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Volume of the periodical
37
Issue of the periodical within the volume
1-2
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
51-57
UT code for WoS article
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EID of the result in the Scopus database
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