Influence of surface roughness on friction and scuffing behaviour of cast iron under sparse lubrication

Jinno, O.; Tyagi, Mukti; Kimura, Yuuji

doi:10.1016/0301-679x(95)00093-j

Cited by 18 publications

(5 citation statements)

References 12 publications

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“…Consequently, the factor directly initiating scuffing is different, depending on the nature of the surface: debris accumulation in the case of abrasion, and the structural similarity and energetic state of the surface in the case of adhesion. The same trend was observed in the work of Jinno et al (1996). The optimum scuffing performance was obtained with an intermediate surface finish (characterised by Ra parameter), independent of the amount of oil supplying the contact area.…”

Section: Introductionsupporting

confidence: 81%

Contribution of roughness parameters in the scuffing performance of metallic surfaces

Wojciechowski

Majchrowski

Mathia

2017

ILT

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Purpose Boundary lubrication cannot provide long-term protection against scuffing. Therefore, it is fundamental to recognise the breaking point of the boundary layer that activates scuffing. Based on this assumption, three-dimensional (3D) morphologies of surfaces were characterised, and the fundamental conditions of the scuffing process were investigated to identify the transition from boundary lubrication conditions to catastrophic wear. Design/methodology/approach A series of systematic tribological double-blind experiments were carried out using a poorly lubricated cylinder/plane interface to model the tribological inverse problem in a boundary lubrication situation. Areal morphological analysis was performed, with the help of an optical interferometer, on a millimetric area corresponding to the contact surface during experimental tribological investigations. The statistical correlation between scuffing and the selected morphological parameters was evaluated. This evaluation study consisted of determining the linear, logarithmic, exponential, polynomial (of degree 2) or power dependency between time to scuffing and morphological parameters. Findings A clear, statistically confirmed relationship was observed between selected morphological parameters of the surface (Spd, Sha, Str, Sz) and its scuffing performance. Originality/value 3D morphological parameters that best specified the technological scuffing performance of metallic surfaces were selected and proposed.

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Section: Introductionsupporting

confidence: 81%

Contribution of roughness parameters in the scuffing performance of metallic surfaces

Wojciechowski

Majchrowski

Mathia

2017

ILT

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“…The problem of precise identification of scuffing initiation follows from the fact that none of the specific theories (e.g. [5][6][7][8][9]) describes this process in a universal way; most of these theories concern concrete material pair and applying friction conditions. Some kind of synthesis in this field was carried out by Bowman and Stachowiak [10], who listed several factors conducive (especially in synergic occurrence) to scuffing initiation: plastic deformation of asperities contact temperature greater than 150 1C high pressure within the contact influence of lubricant chemistry presence of protective surface film effect of surface roughness, texture, and material properties.…”

Section: Scuffing and Catastrophic Wearmentioning

confidence: 99%

Fundamentals of ductile cast iron scuffing at the boundary lubrication regime

Wojciechowski

Eymard

Ignaszak

et al. 2015

Tribology International

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“…Hence, a thicker lubricating film is observed. 52 The sinusoidal asperities undergo elastic deformation due to the hydrodynamic pressure ripples within an elastohydrodynamic conjunction and micro-EHL occurs at relatively low loads and/or with thin macro-elastohydrodynamic films. 53 Speed has a profound influence in EHL contacts as the asperity contact is significantly increased with increased sliding speed.…”

Section: Introductionmentioning

confidence: 99%

A parametric investigation on the microelastohydrodynamic lubrication of power law fluid lubricated line contact

Thakre

Sharma

Harsha

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part J:

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A parametric study of microelastohydrodynamic lubrication contact between rough cylinder and plane lubricated with non-Newtonian power law fluid is carried out. A Gaussian rough surface is considered and modeled using stochastic approach. A theoretical solution of pressure distribution, fluid film thickness, and friction for given speeds, material properties, slide-to-roll ratio, and power law index, is obtained by solution of Reynolds equation using finite element method techniques. An isotropic roughness pattern is considered and results are obtained for wide range of operating parameters. The results indicate that the shear-thickening fluids provide thicker lubricant films as compared to shear-thinning fluids. The minimum fluid film thickness is observed to decrease with an increase of load and it increases with an increase of speed and material parameter. Slide-to-roll ratio has a marginal influence of the minimum film thickness. Under certain operating conditions, softer materials with shear-thickening lubricants yield thicker lubricant films than the harder materials lubricated with shear-thinning fluids. The coefficient of friction too is influenced by the rheology of lubricants with shear-thinning fluids providing larger values of coefficient of friction than the shear-thickening fluids.

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Influence of surface roughness on friction and scuffing behaviour of cast iron under sparse lubrication

Cited by 18 publications

References 12 publications

Contribution of roughness parameters in the scuffing performance of metallic surfaces

Contribution of roughness parameters in the scuffing performance of metallic surfaces

Fundamentals of ductile cast iron scuffing at the boundary lubrication regime

A parametric investigation on the microelastohydrodynamic lubrication of power law fluid lubricated line contact

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