Tribological Tests to Simulate Wear on Piston Rings

Lakshminarayanan, P. A.; Nayak, Nagaraj S.

doi:10.1002/9780470828847.ch11

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…Most of the lubricants suffered scuffing, except the one called SEMO36 that was suitable for the application. The testing protocols developed has been used in the EU Projects POWERFUL [46], EREBIO [47,48], Nano-HVOF [49], EFCAP [50], COST [51], CLEANENGINE [52,53], NANOMAG, and NADIA [32]; in the regional project TRIBORE and MOTOLURE [47]; in the industrial projects REMTRAL [51], AUMORE, RECOLURE, EQUIMOTOR and EQUIMOTOR PLUS [54], ABADIE, and 2 MW engine; and in the national projects RAMPE and ALELLA.…”

Section: Tribology Of Engine and Turbine Componentsmentioning

confidence: 99%

Tribology: The Tool to Design Materials for Energy-Efficient and Durable Products and Process

Igartua¹,

Bayón²,

Aranzabe³

et al. 2019

Friction, Lubrication and Wear

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This chapter describes a summary of the main tribological achievements carried out in TEKNIKER during the last 37 years. It covers the description of commercial and newly developed tribological test benches and case studies for a wide variety of applications. The examples refer to different tribological characterization tools for material selection (e.g., composition, surface treatments, lubricants). It makes emphasis in the failure mechanisms (pitting, scuffing, abrasion, adhesion, thermal fatigue, tribocorrosion, etc.) and friction simulation of a wide range of materials (seals, textiles, steels, cast iron, light alloys, ceramic, composites), tribological systems (mechanical components, biomaterials, tribolubrication), and environments (vacuum, ultrahigh vacuum, low or high temperature, and corrosive). A huge range of new testing equipment and protocols have been developed to simulate the mentioned failure mechanisms and working environments. This knowledge will make possible, in the future, to simulate at laboratory a still wider list of tribological systems and develop new standards. Tribology will help to implement materials solutions into energy and resource efficient products and process, to reduce carbon footprint.2 with more than 250 scientific contributions in congresses, journals, and books and 3 patents. It has been active in several international working groups and associations, in some of them, acting as Spanish representative:• The COST 516 about tribology (1995)(1996)(1997)(1998)(1999)(2000) • The COST 532 about tribotechnology of engines and transmissions

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Section: Tribology Of Engine and Turbine Componentsmentioning

confidence: 99%

Tribology: The Tool to Design Materials for Energy-Efficient and Durable Products and Process

Igartua¹,

Bayón²,

Aranzabe³

et al. 2019

Friction, Lubrication and Wear

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Effect of graphite particles on improving tribological properties Al-16Si-5Ni-5Graphite self-lubricating composite under fully flooded and starved lubrication conditions for transportation applications

Omrani

Moghadam

Algazzar

et al. 2016

Int J Adv Manuf Technol

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The piston ring and cylinder liner materials encounter challenges under limited lubricated conditions leading to high friction and wear. Although, several materials, from cast iron to composite materials, have been proposed in the past, these materials still exhibit poor tribological properties under limited lubricated conditions and there is a need to develop materials that show enhanced tribological properties under limited lubricated conditions. Hence, in the present investigation, Al-16Si-5Ni-5Graphite composite was successfully synthesized as a substitute material for steel in piston ring materials. Different tribometers were used to analyze the tribological properties of aluminum composite reinforced by graphite and steel specimens in lubrication condition and limited lubricated conditions. Under limited lubrication conditions, steel specimen showed higher coefficient of friction (COF) than the Al16Si-5Ni-5Graphite specimen. Besides, the steel specimen exhibited an increase in COF with increasing applied normal load, while the Al-16Si-5Ni-5Graphite showed reduction in COF with increasing applied normal load. The value of COF and acoustic emission (AE) for steel was constant at lower range of normal loads up to 705 N and thereafter, a sudden increase in both COF and AE signal was observed. On the other hand, Al-16Si-5Ni-5Graphite composite did not exhibit any variations in COF and AE even beyond the transition load of 750 N and remained constant up to the normal load of 990 N. Such trend of results suggested that the Al-16Si-5Ni-5Graphite composite showed superior tribological performance when compared to steel under limited or boundary lubrication conditions. In addition, results show that composite has good tribological properties under limited lubricated conditions due to presence of graphite particles in the composites that graphite particles act as solid lubricant on worn surfaces.

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Tribological Tests to Simulate Wear on Piston Rings

Cited by 2 publications

References 24 publications

Tribology: The Tool to Design Materials for Energy-Efficient and Durable Products and Process

Tribology: The Tool to Design Materials for Energy-Efficient and Durable Products and Process

Effect of graphite particles on improving tribological properties Al-16Si-5Ni-5Graphite self-lubricating composite under fully flooded and starved lubrication conditions for transportation applications

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