Abstract
This study investigates the effect of laser surface texturing on the friction behavior of grey cast iron reciprocating under boundary, mixed lubrication conditions and cyclic loading. Four geometrical parameters of micro-textures (feature depth, feature diameter, area fraction, and sliding direction) were studied using a design of experiments (DoE) approach. The results showed that depending on the geometry, micro-textures can have either a positive or a negative effect on the friction behavior. The DoE analysis revealed that the coefficient of friction is mainly affected by the interaction of the feature depth and its diameter. It was found that this can be related to the aspect ratio of the dimples, and the best results were obtained for an aspect ratio of 0.1 and 0.17.
Highlights
Nowadays, there is a great need for energy saving and any field related has attracted considerable attention in recent years
Tribological Tests shown since the others are close to the reference sample which makes the graph difficult to read
Only the textures with the maximum effects are0 to deviation is shown in this figure for comparison
Summary
There is a great need for energy saving and any field related has attracted considerable attention in recent years. For moving systems or systems with moving parts, one way to decrease the energy consumption is to reduce the frictional losses. One of the potential methods to decrease friction is texturing the surface of the moving pieces [1]. Surface texturing consists of producing regular patterns on the surface in order to improve the tribological properties of the pieces [2]. One popular method to produce the structures is by laser machining [2,3,4]. Laser surface texturing is a versatile method that allows us to create various dimple shape geometries [5,6], depths [7,8], sizes [9,10], or distributions [4,11]
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