Results 121 to 130 of about 168 (146)
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The Influence of Additive Chemistry on Gear Micropitting
Volume 4: 9th International Power Transmission and Gearing Conference, Parts A and B, 2003Gear micropitting has been a highly visible issue in selected applications in recent years, most notably in large wind turbine transmissions. Various industry groups have addressed the problem from their own area of expertise. This has included evaluation of the gear design characteristics, surface finishing, the use of special coatings, and ...
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The nucleation, growth and stability of micropits in stainless steel
Corrosion Science, 1994Abstract The probability of the formation of a propagating pit in stainless steel is expressed as the product of the probability of nucleation of a metastable micropit and a transition probability from metastable to stable propagation of the micropit. Factors controlling the initiation and maintenance of pitting corrosion are separated by analysis of
David E. Williams +2 more
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Influence of the metalworking fluid on the micropitting wear of gears
Wear, 2019Abstract Boundary layers can protect tooth flanks from metal-to-metal contacts. The characteristics of boundary layers and the resulting frictional and wear behavior are determined by the processes of manufacturing and running-in. This paper focuses on the influence of the metalworking fluid on the boundary layer formation of gear surfaces and the ...
Christian Brecher +2 more
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Influence of Material Property on Micropitting and Pitting Behavior
World Tribology Congress III, Volume 1, 2005Recent studies have shown that micropitting initiated pitting appears to be the dominant metal fatigue mode in modern bearings and gears. If the formation of micropits can be controlled, the fatigue life of the bearings and gears can be readily lengthened, so the useful life of the engine or transmission can be radically extended.
T. C. Jao +4 more
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Micropitting Performance of Oil Additives in Lubricated Rolling Contacts
Tribology Transactions, 2013In the present study, an existing theoretical micropitting model, based on the competitive interaction between surface fatigue and mild polishing wear, is employed to predict the effects of different base oil/additive solutions and the relative humidity of the environment on micropitting damage.
Brizmer, V. +2 more
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Ultracompact Multilayer Fabry–Perot Filter Deposited in a Micropit
Journal of Lightwave Technology, 2017We fabricate a multilayer Fabry–Perot filter (FPF) on a GaN-on-silicon platform. Being significantly different from conventional thin film FPFs formed on smooth flat surfaces, this FPF is deposited in a micropit, and takes a suspended GaN membrane as its carrier, which makes the whole structure ultracompact.
Wei Wang +6 more
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Micropitting Load Capacity of Spur and Helical Gears
2020In this chapter, a general survey is first done on the micropitting damage of spur and helical gears, which manifests itself to the roughness scale. The mechanism that trigger this type of damage as well as the characteristics that distinguish it from those typical of macropitting (the classical pitting) are described.
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Quantitative imaging of nonlinear interface oscillations in a micropit
The Journal of the Acoustical Society of AmericaCrevice-bubbles are used as cavitation nuclei in ultrasonic cleaning, sonochemistry, lithotripsy and targeted drug delivery. Controlled and safe operation of these techniques require a deeper physical understanding of the system and its dynamics.
Hermen de Roo +3 more
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614 The Mechanism of Micropitting in Gears
The Proceedings of Conference of Tokai Branch, 2000openaire +1 more source