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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20306 - Audio engineering, reliability analysis

Result continuities

  • Project

  • 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

  • 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