Results 21 to 30 of about 173 (149)
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 In this study, we evaluate the surface roughness (SR) of three thermally treated nickel‐titanium rotary instruments (i.e., TruNatomy [TN], ProTaper Gold [PTG], and EdgeTaper Platinum [ETP]) after impact testing with multiple autoclave sterilization cycles using scanning electron microscopy (SEM).
Raidan Ba-Hattab +6 more
wiley +1 more source
A novel tooth tip relief method for reducing micro-pitting of spur gears
Advances in Mechanical Engineering, 2021 Micro-pitting is a common fatigue failure mode of spur gears. To reduce it, this paper proposes a novel tooth tip relief method. Gear meshing simulation is firstly performed considering the actual contact path, showing that there are four Hertz contact ...
Xiangyang Xu +7 more
doaj +1 more source
Influence of the Machining Process on the Service Life and Pitting Morphology of Gear-Tooth Surfaces
Metals, 2022 Pitting, which results from contact fatigue, is a common failure mode in gear transmission systems and is influenced by the material strength and stress state of the contact area, which is further influenced by lubrication and roughness because of stress
Wenbo Xu +8 more
doaj +1 more source
Materials and Corrosion, Volume 72, Issue 6, Page 983-994, June 2021., 2021 The presence of flavins during preconditioning alters the passive film chemistry and microbially influenced corrosion processes on AISI 304 stainless steels Abstract Biofilm formation and microbially influenced corrosion of the iron‐reducing microorganism Shewanella putrefaciens were investigated on stainless steel surfaces preconditioned in the ...
Nina Wurzler +6 more
wiley +1 more source
Lubricants, 2022 Nitriding can significantly increase the load carrying properties of gears. While the diffusion layer is primarily responsible for improving the tooth root and flank load carrying capacity, the compound layer mainly determines the tribological properties
Stefanie Hoja +6 more
doaj +1 more source
Advanced Engineering Materials, Volume 23, Issue 2, February 2021., 2021 Electrochemical corrosion tests focusing on Fe–Mn–Al–Ni shape memory alloy in different microstructural conditions are conducted. Generally, results reveal a corrosion behavior similar to pure iron. However, different kinds of corrosive attack depending on the prevailing phases are seen.
Johanna-Maria Frenck +4 more
wiley +1 more source
Advances in Mechanical Engineering, 2021 A new two-dimensional finite element model of a lubricated contact pair, based on a contour integral, is proposed to investigate the formation of micro-pitting on gear tooth surfaces. Meanwhile, the contact properties and elasto-hydrodynamic lubrication (
Yang Zhao +6 more
doaj +1 more source
Tribology Online, 2019 Micropitting is a type of rolling contact fatigue (RCF) associated with rough surfaces and severe lubrication conditions. In the present study, we developed an estimation method for micropitting life.
Naoya Hasegawa +4 more
doaj +1 more source
Micropitting Generation Mechanism for Gears
International Journal of Automation Technology, 2008 To determine the mechanism behind micropitting, we measured micropit shape occurring in surface durability test, based on the real contact area size formed by asperity interaction in surface roughness. Individual micropitting within surface roughness asperity does not exceed asperity size.
Nobuyoshi Yoshida, Tokihiko Taki
openaire +1 more source
Monitoring the Oil of Wind-Turbine Gearboxes: Main Degradation Indicators and Detection Methods
Machines, 2018 Oil condition monitoring is a common practice in the wind industry. However, the published research about oil degradation in wind turbine gearboxes is limited.
Diego Coronado, Jan Wenske
doaj +1 more source