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Coatings 2017, 7(4), 48; doi:10.3390/coatings7040048

Statistical Determination of a Fretting-Induced Failure of an Electro-Deposited Coating

School of Aerospace and Mechanical Engineering, Korea Aerospace University, 76 Hanggongdaehang-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 412-791, Korea
Academic Editors: Eva Pellicer and Jordi Sort
Received: 22 February 2017 / Revised: 24 March 2017 / Accepted: 29 March 2017 / Published: 31 March 2017
(This article belongs to the Special Issue Thin Films and Patterned Structures by Electrochemical Methods)
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Abstract

This paper describes statistical determination of fretting-induced failure of an electro-deposited coating. A fretting test is conducted using a ball-on-flat plate configuration. During a test, a frictional force is measured, along with the relative displacement between an AISI52100 ball and a coated flat specimen. Measured data are analyzed with statistical process control tools; a frictional force versus number of fretting cycles is plotted on a control chart. On the control chart, critical number of cycles to coating failure is statistically determined. Fretted surfaces are observed after interrupting a series of fretting tests. Worn surface images and wear profiles provide that the increase on the kinetic friction coefficient after a steady-state sliding is attributed to the substrate enlarged at a contact surface. There is a good agreement between observation of worn surfaces and statistical determination for fretting-induced coating failure. View Full-Text
Keywords: electro-deposited coating; coating failure; fretting; statistical process control electro-deposited coating; coating failure; fretting; statistical process control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kim, K. Statistical Determination of a Fretting-Induced Failure of an Electro-Deposited Coating. Coatings 2017, 7, 48.

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