DOProC-based reliability assessment of steel structures exposed to fatigue

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00467519" target="_blank" >RIV/68081723:_____/16:00467519 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.pisc.2015.11.037" target="_blank" >http://dx.doi.org/10.1016/j.pisc.2015.11.037</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pisc.2015.11.037" target="_blank" >10.1016/j.pisc.2015.11.037</a>

Result language

angličtina

Original language name

DOProC-based reliability assessment of steel structures exposed to fatigue

Original language description

Fatigue crack damage depends on a number of stress range cycles. This is a time factor in the course of reliability for the entire designed service life. The failure rate increases in the course of time and the reliability decreased. If possible propagation of the fatigue crack is included into the failure rate, it is necessary to investigate into the fatigue crack and define the maximum acceptable degradation. Three sizes are important for the characteristics of the propagation of fatigue cracks. These are the initial size, detectable size and acceptable size. The theoretical model of fatigue crack progression is based on a linear fracture mechanics.A tension flange has been chosen for applications of the theoretical solution suggested in the studies. Depending on location of an initial crack, the crack may propagate from the edge or from the surface. Regarding the frequency, weight and stress concentration, those locations rank among those with the major hazard of fatigue cracks appearing in the steel structures and bridges. When determining the required degree of reliability, it is possible to specify the time of the first inspection of the construction which will focus on the fatigue damage. Using a conditional probability, times for subsequent inspections can be determined.nFor probabilistic calculation of fatigue crack progression was used the original and new probabilistic methods – the Direct Optimized Probabilistic Calculation (“DOProC), which uses a purely numerical approach without any simulation techniques. By means of FCProbCalc (which stands for Fatigue Crack Probability Calculation), it is possible to carry out the probabilistic modelling of propagation of fatigue cracks in a user friendly environment and to propose a system of regular inspections which should reveal damage to the structure, using the described computational procedures.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Perspectives in Science

ISSN

2213-0209

e-ISSN

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Volume of the periodical

7

Issue of the periodical within the volume

MARCH

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

228-235

UT code for WoS article

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EID of the result in the Scopus database

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