Analysing the frictional properties of micro dimpled surface created by milling machine under lubricated condition. (June 2020)

• Record Type: Journal Article
• Authors: Bhaumik, Shubrajit; Chowdhury, Dhrubajyoti; Batham, Adarsh; Sehgal, Udit; Ghosh, Chiradeep; Bhattacharya, Basudev; Datta, Shubhabrata
• Is Part Of: Tribology international. Volume 146(2020)
• Publication Date: 2020-06
• Subjects: Surface texturing -- Micro dimples -- Milling -- Friction -- Artificial neural network; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2020.106260
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: The work investigated the friction reduction capability of micro-dimples created on a steel plate (disc) using a vertical milling machine under lubrication condition. A L25 orthogonal array was used to determine the combinations of various parameters. Wear tests were carried out using a pin on disc tribometer. SAE 10W30 was used as lubricant which was supplied intermittently between the interface of pin and disc. After the tribo test the optimized dimple parameters exhibited a decrease of 49.76% coefficient friction over the non-dimpled disc. The surfaces were further analysed using a three dimensional profilometer and scanning electron microscope. Artificial neural networks were employed to understand the influence played by each parameter on the coefficient of friction during the tribo test. Highlights: Micro dimples created from milling machines capable of friction reduction. Optimized dimple parameters exhibited a decrease of 49.76% coefficient friction over the non-dimpled disc. ANN predicted the dependence of dimple geometries on friction reduction capability.