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http://dx.doi.org/10.12985/ksaa.2015.23.1.062

Development of a Testing Machine for Fretting Damage of Aerospace Components  

Kwon, Hyuk-Jin (한국항공대학교 대학원 항공우주 및 기계공학과)
Kim, Kyung-Mok (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Journal of the Korean Society for Aviation and Aeronautics / v.23, no.1, 2015 , pp. 62-66 More about this Journal
Abstract
In this paper, a fretting testing machine is developed using ball-on-flat test apparatus. Precise micro-slip motion is produced by a linear stage. A relative displacement between a ball and a flat specimen is measured with a laser displacement sensor. Dry friction tests are conducted with AISI 52100 steel balls and cold-rolled high strength steel plates at room temperature and ambient humidity. The evolution of the kinetic friction coefficient is determined. Comparison between measured friction coefficients and those found in the literature is then carried out. Fretting tests with an electro-deposited coating are employed at an amplitude of 0.05 mm. Slip regime is identified with slip ratio. It is demonstrated that a developed testing machine allows determining the friction coefficient under fretting condition.
Keywords
Fretting; Wear; Friction; Aerospace;
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