Wear measurement of the cylinder liner of a single cylinder diesel engine using a replication method

Gara, Luan; Zou, Qian; Sangeorzan, Brian; Barber, Gary C.; McCormick, H. E.; Mekari, Milad

doi:10.1016/j.wear.2009.10.006

Cited by 29 publications

(13 citation statements)

References 3 publications

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“…This stage of loading under lubrication drought exhibits the formation of crevices with similar surface deteriorations evidenced in the research work of Gara et. al [30]. The surface failures have been reported previously by various researchers and as such a strong need for surface mending by a bonafide lubrication system arises.…”

Section: Wearmentioning

confidence: 89%

Evaluating Scuffing Failure in Dry Sliding Conditions of Monolayer Chromium Piston Ring/Bulk Grey Cast Iron Liner Interface

Fayaz

Wàňi

2020

Tribology Online

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This research reports the scuffing failure phenomenon of piston ring-cylinder liner in pilot state bench tests. Initially, microhardness evaluation of chromium sprayed piston rings of functionally graded Aluminium A390 piston was conducted using a Vickers hardness Indenter following ASTM E-384 standard. The tribological characterization for dry sliding, simulating lubrication starvation was evaluated using reciprocating Universal Tribometer. For surface morphology and allied surface characterization, Energy Dispersive X-Ray spectroscopy integrated Scanning Electron Microscope was used. Substantially large volumes of wear depicting abnormal wear have been observed on the tribo-conjugate grey CI cylinder liner surfaces in sliding with chromium coating on SAE9254 grade steel substrate. This can be attributed to the considerable hardness gradient of tribopair in conjugation. With chromium coating having a conspicuous hardness edge over the CI cylinder liner, the extrusion and ploughing of the liner surface depict the abnormality in wear. The Coefficient of Friction (COF) under dry sliding with stepped load increments showed an unsteady state of friction and this performance is underrated for operation of any tribological system.

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Section: Wearmentioning

confidence: 89%

Evaluating Scuffing Failure in Dry Sliding Conditions of Monolayer Chromium Piston Ring/Bulk Grey Cast Iron Liner Interface

Fayaz

Wàňi

2020

Tribology Online

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“…Many authors focused on ring/liner wear. Michalski et al, 29 Grabon et al, 30 and Gara et al 31 based their studies on valley/peak statistics or bearing area curve analyses. Priest et al 26 showed new/worn ring profiles and proposed some smooth contact film thickness calculations along the piston stroke; the thinner the film compared to roughness, the larger the predicted wear rate.…”

Section: Micro-geometrymentioning

confidence: 99%

Determination of fundamental parameters for the cross-hatched cylinder liner micro-geometry

Biboulet

Bouassida

Cavoret

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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This paper is part of a project aiming at optimizing the cylinder-liner/piston-ring contact performance: oil consumption, friction and wear. The surface micro-geometry has a major influence on these characteristics. Classical cylinder-liners display cross-hatched patterns. Grooves modify contact pressure distributions and act as lubricant reservoirs and pipes redistributing oil. The load-carrying capacity is greatly influenced by the number of grooves and their geometry. An automatic groove geometry identification (depth, width, angle) is performed on cylinder-liner surface measurements. The surfaces were measured at two instants: new and after a fired engine test. The micro-geometry evolution is discussed.

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“…From these different research lines, surface topographical evaluation using optical interferometry assisted by image analysis (OI1IA) has been extensively studied and it is considered very promising because it provides local dimensional changes with high accuracy (sub-micron) in a short period of time, which is of feasible implementation along the production chain. However, the literature reporting wear detection using optical interferometry has not examined the accuracy of this method prior testing and barely discussed the settings used during the measurements (Kumar et al, 2000;Obara and Sinatora, 2016;Cabanettes and Rosén, 2014;Gara et al, 2010;Corral et al, 2010;Sasajima et al, 2000;Mezghani et al, 2013). Because most of the uncertainties of OI measurements are surface/equipment related, for surfaces that are geometrically complex (randomly rough surfaces, such as engineering surfaces) many sources of uncertainties may be simultaneously present and it may not be possible to remove, compensate, or estimate their separate influences (Petzing et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Methodology for wear mapping error quantification

Cousseau

Passos

2020

ILT

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Purpose The purpose of this paper is to propose a methodology to quantify the error on wear volume evaluation using optical interferometry with image analysis (OI+IA), to establish a lower threshold for wear mapping in practical applications. Design/methodology/approach A three-dimensional surface wear map is quantified by measuring the same area of a surface before and after a wear process using optical interferometry. Then, by subtracting the matching images, the wear map (volume of wear) is obtained. To access the error related to wear mapping, the difference between several consecutive measurements of the same unworn surface was performed and deeply investigated. Findings The paper shows that the difference between two consecutive measurements of the same unworn surface, which ideally should be zero, is not. Thus, the magnitude of this “wear map” is the error. The main causes of such uncertainties are because of sample motion in a subpixel scale; a combination between surface roughness with the selected resolution; and numerical errors on the relocation process that is used to match the surfaces before subtracting them. Practical implications The proposed methodology allows one to define the lower threshold for wear map analysis using OI+IA. To know the limitation of OI+IA for wear mapping prevents misevaluation of the so-called almost-zero-wear. Originality/value This paper covers and identifies main uncertainties and numerical errors related to optical interferometry assisted by image analysis for wear mapping. Several other papers deal with uncertainties of OI; however, this paper proposes a simple methodology to evaluate the lower threshold for wear mapping. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2019-0354

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Wear measurement of the cylinder liner of a single cylinder diesel engine using a replication method

Cited by 29 publications

References 3 publications

Evaluating Scuffing Failure in Dry Sliding Conditions of Monolayer Chromium Piston Ring/Bulk Grey Cast Iron Liner Interface

Evaluating Scuffing Failure in Dry Sliding Conditions of Monolayer Chromium Piston Ring/Bulk Grey Cast Iron Liner Interface

Determination of fundamental parameters for the cross-hatched cylinder liner micro-geometry

Methodology for wear mapping error quantification

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