Scuffing resistance testing of piston ring materials for marine two-stroke diesel engines and mapping of the operating mechanisms

Olander, Petra; Jacobson, Staffan

doi:10.1016/j.wear.2015.01.074

Cited by 20 publications

(11 citation statements)

References 19 publications

(43 reference statements)

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“…This is due to sudden nature of scuffing and still unknown factors affecting this failure mechanism [32]. Such wide scatter has been also reported in scuffing resistance of piston ring materials reciprocating under constant load [35].…”

Section: Resultsmentioning

confidence: 92%

Effect of surface texturing on cast iron reciprocating against steel under starved lubrication conditions: A parametric study

Saeidi

Meylan

Hoffmann

et al. 2016

Wear

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This study investigates the effect of laser surface texturing on the friction behavior and the lifetime of grey cast iron reciprocating under starved lubrication conditions. Five geometrical texture parameters (feature depth, diameter, length, area fraction and sliding direction) were studied using a design of experiments (DoE) approach by developing a fractional factorial design. Reciprocal sliding tests were carried out for the cast iron-steel tribo-pair at a pressure of 24 MPa and a frequency of 6 Hz. DoE results revealed that the geometrical parameters of micro-textures interact in a complex manner. Hence, for better understanding the effect of surface texturing on the tribological performance, the interactions between geometrical parameters need to be considered. It is found that except the following main factors: diameter and area fraction, mainly interactions of geometrical parameters have significant impact on the coefficient of friction. It is also observed that micro-textures could increase the lifetime of tribo-systems sliding under starved conditions. Based on the DoE analysis, an optimum micro-texture having a relatively low coefficient of friction and a long lifetime are achieved with the following (geometrical) parameters: a depth of 50 μm, a diameter of 100 μm, a length of 500 μm, an area fraction of 5%, and the sliding direction perpendicular to the micro-textures.

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Section: Resultsmentioning

confidence: 92%

Effect of surface texturing on cast iron reciprocating against steel under starved lubrication conditions: A parametric study

Saeidi

Meylan

Hoffmann

et al. 2016

Wear

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“…This may be the main cause of why the anti-scuffing duration of the CKS ring is less than that of the NCM ring. Many fine abrasive particles on the CKS ring surface prevent the uniform distribution of the lubricating medium to the asperities contact area [ 22 ]. A stress concentration zone will be formed, thus resulting in more scuffing initiation spots.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Heavy-Duty Scuffing Behavior between Chromium-Based Ceramic Composite and Nickel-Chromium-Molybdenum-Coated Ring Sliding against Cast Iron Liner under Starvation

Shen

et al. 2017

Materials

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A running-in and starved lubrication experiment is designed to investigate the heavy-duty scuffing behavior of piston ring coatings against cast iron (Fe) cylinder liner using the piston ring reciprocating liner test rig. The scuffing resistance of the piston ring with the chromium-based ceramic composite coating (CKS), and that with the thermally sprayed nickel-chromium-molybdenum coating (NCM) is compared at different nominal pressures (40~100 MPa) and temperatures (180~250 °C). With the failure time as a criterion, the rank order is as follows: NCM/Fe > CKS/Fe. Before the scoring occurs at the interface of the piston ring and cylinder liner (PRCL), the cast iron liner enters into a “polish wear” stage, and iron-based adhesive materials begin to form on the piston ring surface. With the macroscopic adhesion formation, the plastic shearing cycle causes surface damages mainly due to abrasive effects for the CKS/Fe pairs and adhesive effects for the NCM/Fe pairs.

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“…Whereby in [78], the applied load is set to be 30 N, with a Vmax=55 mm/s. POP can also be used for scuffing tests, as Olander and Jacobson reported [79].…”

Section: Pin On Plate (Pop)mentioning

confidence: 99%

A Review on Tribological Wear Test Rigs for Various Applications

bawab

Nirmal

Isa

et al. 2018

IJIE

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To mimic a tribosystem setup to the real time model while taking into consideration the subject of green tribology, many tribological wear test rigs are invented. The current work is a dedicated review on the latest development of various tribological wear test rigs build for numerous applications. With the aid of diagrams, the working principles of the machines which are built on specific standards are discussed. Their operating parameters associated with related research using these machines are also included. In addition, recommendations and directions for improvements in tribology machines are reported.

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Scuffing resistance testing of piston ring materials for marine two-stroke diesel engines and mapping of the operating mechanisms

Cited by 20 publications

References 19 publications

Effect of surface texturing on cast iron reciprocating against steel under starved lubrication conditions: A parametric study

Effect of surface texturing on cast iron reciprocating against steel under starved lubrication conditions: A parametric study

Comparison of Heavy-Duty Scuffing Behavior between Chromium-Based Ceramic Composite and Nickel-Chromium-Molybdenum-Coated Ring Sliding against Cast Iron Liner under Starvation

A Review on Tribological Wear Test Rigs for Various Applications

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