Wear and friction of self-lubricating coatings applied to spur gears in fluidfree aerospace actuation gearboxes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00368693" target="_blank" >RIV/68407700:21230/24:00368693 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1177/13506501231197486" target="_blank" >https://doi.org/10.1177/13506501231197486</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/13506501231197486" target="_blank" >10.1177/13506501231197486</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Wear and friction of self-lubricating coatings applied to spur gears in fluidfree aerospace actuation gearboxes

Popis výsledku v původním jazyce

Aerospace actuation gearboxes operate in low-temperature environments where increased lubricant viscosity leads to significant no-load power losses. Replacing fluid lubricants with coatings applied to the gear teeth is one potential approach to improving gearbox efficiency. Here we develop an approach to determining average wear rates of coated gears using a power-recirculating test stand, profile measurements and a model of the tooth contact. Worn gears are inspected using scanning electron imagery, and energy dispersive X-ray and Raman spectroscopy to understand the wear mechanisms and failure modes. Average coefficients of friction are determined at 20°C and -40°C using a power-absorbing test stand and isolation of tooth friction losses by calculation. These methods are then demonstrated on a promising C/Cr composite coating.

Název v anglickém jazyce

Wear and friction of self-lubricating coatings applied to spur gears in fluidfree aerospace actuation gearboxes

Popis výsledku anglicky

Aerospace actuation gearboxes operate in low-temperature environments where increased lubricant viscosity leads to significant no-load power losses. Replacing fluid lubricants with coatings applied to the gear teeth is one potential approach to improving gearbox efficiency. Here we develop an approach to determining average wear rates of coated gears using a power-recirculating test stand, profile measurements and a model of the tooth contact. Worn gears are inspected using scanning electron imagery, and energy dispersive X-ray and Raman spectroscopy to understand the wear mechanisms and failure modes. Average coefficients of friction are determined at 20°C and -40°C using a power-absorbing test stand and isolation of tooth friction losses by calculation. These methods are then demonstrated on a promising C/Cr composite coating.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/EF16_026%2F0008396" target="_blank" >EF16_026/0008396: Nové nanostruktury pro inženýrské aplikace umožněné kombinací moderních technologií a pokročilých simulací</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

ISSN

1350-6501

e-ISSN

2041-305X

Svazek periodika

238

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

26-43

Kód UT WoS článku

001091513500001

EID výsledku v databázi Scopus

2-s2.0-85173730949