Design and development of an advanced linear reciprocating tribometer

Mohan, C.B.; Divakar, C; Venkatesh, Krishna; Gopalakrishna, K.; Lohith, K. S. Mahesh; Naveen, T.

doi:10.1016/j.wear.2009.01.047

Cited by 12 publications

(6 citation statements)

References 5 publications

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“…154 These tribometers generally have a pin of a known geometry sliding across a plate under load over a known distance, reciprocation allows friction to be recorded in both the forward and backward motions. 155 Measurements of static COF are also possible to be measured, see Fig. 10B.…”

Section: 147mentioning

confidence: 99%

Challenges and developments of self-assembled monolayers and polymer brushes as a green lubrication solution for tribological applications

et al. 2015

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ab Self-assembled monolayers (SAMs), after originally being investigated due to their functions in changing surface wettability, have been significantly developed over the years. Many types of SAMs have been developed on a variety of substrates. However their formation mechanism, rate and quality are found to be influenced by many factors. A range of SAMs including single-and multi-component are included in this review with focus on the nano and macro tribological properties. More recently, surface initiated polymer brushes, i.e. macromolecular assemblies attached to a substrate, have emerged to be an alternative and promising method for surface modification. The ability to tether these macromolecules to tribological contacts is key to their resistance to shear under loaded contacts. This review also covers atom transfer radical polymerisation (ATRP) and the role of this technique in developing new lubrication solutions. Particular care has been taken to include the development of lubrication solutions for silicon nitride due to the importance of this material as an engineering ceramic. This paper reviews the stateof-the-art development of SAMs and polymer brushes especially the potential opportunities and challenges in applying them in tribological contacts as a lubrication solution.

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Section: 147mentioning

confidence: 99%

Challenges and developments of self-assembled monolayers and polymer brushes as a green lubrication solution for tribological applications

et al. 2015

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“…A linear reciprocating tribometer (Mohan et al, 2009) was used to characterize the tribological efficiency of the lubricant additives in terms of its frictional behavior. The principle of operation consists of reciprocating a moving member (slide) against a stationary counter surface (block) with the slide reciprocating in the guide ways of the machine.…”

Section: Friction Set-up and Measurementmentioning

confidence: 99%

“…The requirements of linear guide ways and industrial lubricants are rising, especially for machine tools which have to meet the demands of high positioning exactness and stick-slip free behavior with low coefficient of friction over a wide range of speed. These requirements can be met by using different slide way materials (Erdimer, 2005) and oil groove design (Mohan et al, 2009), as well as design of lubricants by suitable additives. Lubricant additives are used to improve the tribological properties of surfaces in contact/motion.…”

Section: Introductionmentioning

confidence: 99%

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Development of novel additives for slide way lubricants

Mohan

Venkatesh

Divakar

et al. 2015

Industrial Lubrication and Tribology

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Purpose -The paper aims to address the formulation of zirconium and oxalicum additive-based lubricants for use in slide ways to meet the demands of high positioning exactness based on reduction in stick-slip and coefficient of friction over a wide speed range and compares the same with commercially available lubricant. Design/methodology/approach -An investigation into the frictional properties and stick-slip behavior of lubricating oil is carried out using linear reciprocating tribometer and correlated with ultraviolet spectroscopic analysis. Findings -It is observed that these transition metal additive compounds support in increasing the flexibility of the molecular chains leading to improved lubricity. Originality/value -The lubricant additives considered for the current study are based on transition metals zirconium and oxalicum. It is observed that these additive compounds support in increasing the flexibility of the molecular chains, leading to improved lubricity.

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“…A sliding system shows two kinds of motion namely stick-slip (jerky or unsteady) motion and steady (smooth) motion (Blanpied et al 1987;Persson 2000;Mohan et al 2009;Goohpattader and Chaudhury 2010). Steady sliding, as is evident from its name, sliding velocity as well as friction force of the sliding mass does not change with time.…”

Section: Introductionmentioning

confidence: 99%

Influence of shear velocity on frictional characteristics of rock surface

et al. 2011

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Understanding the fundamental issues related with the effect of shear velocity on frictional characteristics at the interface of rock surfaces is an important issue. In this paper, strain-rate dependence on friction is investigated in relation to sliding behaviour under normal load. The phenomenon of stick-slip of granite and shaly sandstone with a tribometer at constant rate of strain under normal loads was observed.Friction at the interface of the rock samples was developed by increasing shear strain at a constant rate by applying constant velocity using the tribometer. For shaly sandstone, state parameters (a and b) played a major role in determining the friction values and roughness of the contact surfaces as well. Higher values of b for shaly sandstone may be attributed to the fact that its surface had a greater number of pronounced asperities. Rubbing between the surfaces does not mean that surface becomes smoother. This is because of variation of friction between surfaces.

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Design and development of an advanced linear reciprocating tribometer

Cited by 12 publications

References 5 publications

Challenges and developments of self-assembled monolayers and polymer brushes as a green lubrication solution for tribological applications

Challenges and developments of self-assembled monolayers and polymer brushes as a green lubrication solution for tribological applications

Development of novel additives for slide way lubricants

Influence of shear velocity on frictional characteristics of rock surface

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