Fretting fatigue in dovetail blade roots: Experiment and analysis

Rajasekaran, R.; Nowell, D.

doi:10.1016/j.triboint.2006.02.044

Cited by 127 publications

(63 citation statements)

References 13 publications

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“…The cylindrical specimens are also 44 mm long with the diameter of the half-cylindrical specimen being 12 mm. The substrate materials used in the current study are a high strength steel (SCMV) and a titanium alloy (Ti-6Al-4V), focussed on aeroengine applications where a number of components potentially experience fretting problems such as in the spline coupling [12] and the dovetail fan blade joint [13,14]. Untreated specimen blanks were manufactured from SCMV and Ti-6Al-4V.…”

Section: Materials and Specimensmentioning

confidence: 99%

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Gross slip fretting wear performance of a layered thin W-DLC coating: Damage mechanisms and life modelling

Tobi

Shipway

Leen

2011

Wear

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Section: Materials and Specimensmentioning

confidence: 99%

“…Finally, of course, a key benefit of an FE-based wear model is the possibility to investigate, at least computationally, the performance of coatings in complex geometry applications, e.g. real three-dimensional applications such as dovetail joints [14] and spline couplings [12].…”

Section: Coating Life Predictionmentioning

confidence: 99%

Gross slip fretting wear performance of a layered thin W-DLC coating: Damage mechanisms and life modelling

Tobi

Shipway

Leen

2011

Wear

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“…Fretting can result in crack initiation and propagation (termed fretting fatigue) and also in loss of material at contact surfaces (termed fretting wear) [1]. In the fan blade/ disk dovetail in an aeroengine system (where both components are typically made from titanium alloys), both fretting wear and fatigue wear may occur due to relative motion at the contact [2][3][4]; in light of the poor tribological behaviour (high coefficient of friction and high rate of wear) of self-mated titanium alloys, a number of low-friction coatings having been developed with the purpose of reducing fretting damage in this particular application [5][6][7]. There is a desire for such anti-friction coatings to have extended lifetimes leading to lower numbers of maintenance interventions being required.…”

Section: Introductionmentioning

confidence: 99%

Evolution of damage in MoS 2 -based dry film lubricants (DFLs) in fretting wear—The effect of DFL thickness and contact geometry

Barman

Shipway

Voisey

et al. 2017

Progress in Organic Coatings

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk AbstractDry film lubricant (DFL) coatings are widely used to reduce coefficients of friction and damage in highly loaded contacts. This work investigates the behaviour of a commercially available MoS2-based DFL in a cylinder-on-flat contact geometry with a fretting amplitude of 300 µm. Cylinders with radii of 15 mm, 80 mm and 160 mm along with DFL thicknesses between 12 µm and 86 µm were utilized. Three stages in the lifetime of the system were investigated; in the first stage, the DFL wore with a volumetric rate that was proportional to the number of cycles (under a given load), until the thickness of the DFL was reached. In the second stage, a thin low friction surface layer existed, with its durability being proportional to the contact pressure. In the third stage, metal-metal contact resulted in short-term instabilities in the coefficient of friction and the DFL system was said to have failed.

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“…Nesládek et al [2] analyzed fretting fatigue test data and pointed out that the fatigue strength is decreased to almost one quarter of the plain fatigue strength. Although fretting fatigue widely exists in many engineering components such as gas turbine dovetail joint [3], splined couplings [4], bolted joints [5,6], rope wires [7,8], quantitative analysis of fretting fatigue damage criterion and fretting fatigue life prediction method are still needed.…”

Section: Introductionmentioning

confidence: 99%