A functional form for wear depth of a ball and a flat surface
A functional form for wear depth of a ball and a flat surface
Formulae are derived from first principles which predict the wear depth of a ball and a flat surface through time as they slide against each other, in relation to any phenomenological law for wear volume, and taking into account the effect of component geometry. The equations can be fit using experimental wear volume data from ball-on-flat tribometers. The formulae remove previous limiting approximations made in the literature and extend to the prediction of the wear depth of both contacting surfaces. The wear model accords with a previous model that is validated by pin-on-disc testing of a steel/steel contact. The current paper uses the formulae derived to predict the wear depth of a diamond-like carbon (DLC) coating and a steel ball as they slide against each other in deionised water. An Archard equation is used to predict the wear volume of each surface; however, a DLC coating is known to form a transfer layer which reduces the rate of wear, and since this scenario does not obey Archard’s law directly, a time-dependent-specific wear rate is used to fit a semi-empirical model to experimental results. The final model predicts the wear depth of the ball and flat accurately.
173-179
Sutton, D. C.
b7a9d943-e954-44a2-b070-4e9f3f5e5d4f
Limbert, G.
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Stewart, D.
b1e2491e-53f7-4429-922a-f2eaddf26b19
Wood, R. J. K.
d9523d31-41a8-459a-8831-70e29ffe8a73
1 January 2014
Sutton, D. C.
b7a9d943-e954-44a2-b070-4e9f3f5e5d4f
Limbert, G.
a1b88cb4-c5d9-4c6e-b6c9-7f4c4aa1c2ec
Stewart, D.
b1e2491e-53f7-4429-922a-f2eaddf26b19
Wood, R. J. K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Sutton, D. C., Limbert, G., Stewart, D. and Wood, R. J. K.
(2014)
A functional form for wear depth of a ball and a flat surface.
Tribology Letters, 53 (1), .
(doi:10.1007/s11249-013-0254-3).
Abstract
Formulae are derived from first principles which predict the wear depth of a ball and a flat surface through time as they slide against each other, in relation to any phenomenological law for wear volume, and taking into account the effect of component geometry. The equations can be fit using experimental wear volume data from ball-on-flat tribometers. The formulae remove previous limiting approximations made in the literature and extend to the prediction of the wear depth of both contacting surfaces. The wear model accords with a previous model that is validated by pin-on-disc testing of a steel/steel contact. The current paper uses the formulae derived to predict the wear depth of a diamond-like carbon (DLC) coating and a steel ball as they slide against each other in deionised water. An Archard equation is used to predict the wear volume of each surface; however, a DLC coating is known to form a transfer layer which reduces the rate of wear, and since this scenario does not obey Archard’s law directly, a time-dependent-specific wear rate is used to fit a semi-empirical model to experimental results. The final model predicts the wear depth of the ball and flat accurately.
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e-pub ahead of print date: 1 November 2013
Published date: 1 January 2014
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Local EPrints ID: 371850
URI: http://eprints.soton.ac.uk/id/eprint/371850
ISSN: 1023-8883
PURE UUID: 9cc6aa80-0494-4896-8206-d4a205111443
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Date deposited: 19 Nov 2014 15:41
Last modified: 15 Mar 2024 02:47
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Author:
D. C. Sutton
Author:
D. Stewart
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