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http://dx.doi.org/10.9725/kts.2020.36.6.378

Evaluation of Brinell Hardness of Coated Surface Using Finite Element Analysis: Part 1 - A Feasibility Study  

Park, TaeJo (School of Mechanical Engineering, ERI, Gyeongsang National University)
Kang, JeongGuk (School of Mechanical & Aerospace Engineering, Gyeongsang National University)
Publication Information
Tribology and Lubricants / v.36, no.6, 2020 , pp. 378-384 More about this Journal
Abstract
The friction surfaces of mechanical parts are heat-treated or coated with hard materials to minimize wear. Increasing the hardness is a very useful way to reduce abrasive wear. The general Brinell hardness test, which is widely used for metallic materials, is not suitable because it hardly shows any change in hardness when coated with thin films. In this study, we propose a basis for the application of the new Brinell hardness test method to the coated friction surface. An indentation analysis of the rigid sphere and elastic-perfectly plastic materials is performed using a commercial finite element analysis software. The results indicate that their loadto-diameter ratio is the same; the Brinell hardness test method can be applied even when the indenter diameter is on the micrometer scale. In the case of hard coating, it is difficult to calculate Brinell hardness using the diameter of the indentation, but the study revealed, for the first time, that it can be calculated using the depth of the indentation regardless of coating. The change in hardness owing to thin film coating over a wide load range implies that the hardness evaluation method is appropriate. Additional studies on various properties related to the substrate and coating material are required to apply the proposed method.
Keywords
Brinell hardness; coating; indentation analysis; finite element analysis;
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Times Cited By KSCI : 5  (Citation Analysis)
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