Damage progression in silicon nitride undergoing non-conforming hybrid cyclic contact
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00481381" target="_blank" >RIV/68081723:_____/17:00481381 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijfatigue.2017.08.010" target="_blank" >http://dx.doi.org/10.1016/j.ijfatigue.2017.08.010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijfatigue.2017.08.010" target="_blank" >10.1016/j.ijfatigue.2017.08.010</a>
Alternative languages
Result language
angličtina
Original language name
Damage progression in silicon nitride undergoing non-conforming hybrid cyclic contact
Original language description
Bearings experience one of the most severe mechanical loading of all machine elements. The contactnstresses engendered are highly localised and bound to a very small volume of the material. The aim ofnthis study was to investigate how localised stresses influence the damage mechanism in hybrid contact.nCyclic contact loading of a gas pressure sintered silicon nitride (GPSN) was investigated. Silicon nitridendisks and tungsten carbide (WC) indenters were tested under different media, initially at ‘‘application relevant”nlow contact pressures (4–6 GPa) and further on, to accelerate damage, at high contact pressuresn(10–15 GPa). The low load experiments showed various forms of surface damage with no significant differencenbetween dry and lubricated contact. Whereas, the high load experiments showed different damagenbehaviour under unlubricated and lubricated conditions. Unlubricated contact resulted in thenformation of transfer layers and Hertzian cracks on the silicon nitride surface whereas, damage undernlubricated contact was mainly dominated by grain removal and delayed crack formation. Finite elementnsimulations were carried out to study the stress state under different loading conditions. The FEM resultsnindicated that the combination of surface tensile and shear stresses predominantly influence the fatiguendamage observed in the experiments rather than fluctuating tensile stresses only.
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
20306 - Audio engineering, reliability analysis
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Fatigue
ISSN
0142-1123
e-ISSN
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Volume of the periodical
105
Issue of the periodical within the volume
DEC
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
97-110
UT code for WoS article
000413377900010
EID of the result in the Scopus database
2-s2.0-85028435178