Analytical and Experimental Study of Gear Surface Micropitting Due to Variable Loading

Long, Hui; Al-Tubi, I.S.; Martinze, M.T.M.

doi:10.4028/www.scientific.net/amm.750.96

Cited by 3 publications

(1 citation statement)

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“…When S λ < 1, a high risk of micropitting is recommended; when 1 < S λ < 2, a moderate micropitting risk is recommended; when S λ > 2, a low micropitting risk is recommended [22,23]. Long et al [24] from the University of Sheffield, South Yorkshire, UK, carried out an investigation on the influence of load variation on gear tooth surface micropitting based on ISO/TR 15144:2010 [20]. Al-Tubi et al [25] from the same research group studied the gear micropitting initiation and propagation under varying loading conditions based on the ISO/TR 15144:2010 and the revised version ISO/TR 15144:2014 [26].…”

Section: Introductionmentioning

confidence: 99%

A Review on Micropitting Studies of Steel Gears

Liu

Zhu

et al. 2019

Coatings

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With the mounting application of carburized or case-hardening gears and higher requirements of heavy-load, high-speed in mechanical systems such as wind turbines, helicopters, ships, etc., contact fatigue issues of gears are becoming more preponderant. Recently, significant improvements have been made on the gear manufacturing process to control subsurface-initiated failures, hence, gear surface-initiated damages, such as micropitting, should be given more attention. The diversity of the influence factors, including gear materials, surface topographies, lubrication properties, working conditions, etc., are necessary to be taken into account when analyzing gear micropitting behaviors. Although remarkable developments in micropitting studies have been achieved recently by many researchers and engineers on both theoretical and experimental fields, large amounts of investigations are yet to be further launched to thoroughly understand the micropitting mechanism. This work reviews recent relevant studies on the micropitting of steel gears, especially the competitive phenomenon that occurs among several contact fatigue failure modes when considering gear tooth surface wear evolution. Meanwhile, the corresponding recent research results about gear micropitting issues obtained by the authors are also displayed for more detailed explanations.

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Section: Introductionmentioning

confidence: 99%