Results 21 to 30 of about 168 (146)
Bioinorganic Chemistry and Applications, Volume 2022, Issue 1, 2022., 2022 In dentistry, zirconia implants have emerged as a promising alternative for replacing missing teeth due to their superior aesthetic performance and chemical stability. To improve the osseointegration of zirconia implants, modifying their surface with hierarchical micro/nanotopography and bioactive chemical composition are two effective ways.
Nan Li +7 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
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
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
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
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
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
Gear micropitting: model and validation [PDF]
WIT Transactions on Engineering Sciences, 2010 A numerical model for the prediction of surface initiated damage on gear tooth flanks (micropitting and mild wear) is presented. This model hinges on a model of the mixed film lubrication regime and on the application of the Dang Van highcycle multi-axial fatigue criterion. The numerical model developed was applied to the prediction of micropitting and
J. A. Brandão +2 more
openaire +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
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