Experimental and numerical study of combined high and low cycle fatigue performance of low alloy steel and engineering application
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F21%3A00559519" target="_blank" >RIV/68378297:_____/21:00559519 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3390/ma14123395" target="_blank" >https://doi.org/10.3390/ma14123395</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma14123395" target="_blank" >10.3390/ma14123395</a>
Alternative languages
Result language
angličtina
Original language name
Experimental and numerical study of combined high and low cycle fatigue performance of low alloy steel and engineering application
Original language description
The fatigue behaviors of metals are different under different in-service environment and loading conditions. This study was devoted to investigating the combined effects of high and low cycle fatigue loads on the performance of the low alloy steel Q345. Three kinds of experiments were carried out, including the pure high cycle fatigue (HCF) tests, the pure low cycle fatigue (LCF) tests, and the combined high and low cycle fatigue (HLCF) tests. The prediction formulae were proposed for the combined high and low cycle fatigue failure. Scanning electron microscopy (SEM) and stereo microscope were used to analyze the microstructure and fracture morphology due to different fatigue loads. Case study on the combined high and low cycle fatigue damage of a steel arch bridge was carried out based on the FE method and the proposed formula. The results show that the LCF life decreases evidently due to the prior HCF damages. The HLCF fracture surface is relatively flat near the crack initiation side, and rugged at the other half part. The fatigue damages at the bridge joints increase significantly with consideration of the pre-fatigue damages caused by traffic load. In the 100th anniversary of service, the fatigue damage index without considering the HCF pre-damage is only about 50% of the coupled damage value.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials
ISSN
1996-1944
e-ISSN
1996-1944
Volume of the periodical
14
Issue of the periodical within the volume
12
Country of publishing house
CH - SWITZERLAND
Number of pages
19
Pages from-to
3395
UT code for WoS article
000666141800001
EID of the result in the Scopus database
2-s2.0-85108875052