Effects of surface texturing on friction and vibration behaviors of sliding lubricated concentrated point contacts under linear reciprocating motion

Friction and Vibration Behaviors of Lubricated Laser Textured Point Contacts under Reciprocating Rolling Motion with Highlights on the Used Laser Parameters

“…Many previous studies have reported that shallow circular dimples (having diameter in the range 50-depth < have beneficial effects in terms of reducing the friction and enhancing the fatigue life of the lubricated concentrated contacts operated in the mixed lubrication regime. Moreover, favorable reduction in friction coefficient was also observed with a texture density of 12.5 % under the sliding reciprocating motions of concentrated contacts [11]. Based on the above studies, textured tracks 12.5 %) were prepared on the flat plate.…”

“…It has been indicated that nano/micro level features of the mating surfaces of concentrated contacts can help in improving the lubrication [4] as well as reducing the friction and wear [5][6][7] under range of operating conditions where the contact patch dimensions happen to be of the same order as that of surface features. Few studies have investigated the influence of surface texturing on the fatigue life [8,9], vibration [10][11][12] and noise [12] of the lubricated rolling/sliding concentrated contacts. It has been reported by the researchers that well designed surface textures can improve the fatigue life of concentrated contacts in addition to the reduction in the contact vibration and noise.…”

Removal of islands from micro-dimple arrays prepared by through-mask electrochemical micromachining

“…5): (1) An SU-8 mold with a micro-pillar array on substrate1 was fabricated by UV-LIGA. (2) The mold was covered on substrate2 with high-temperature-resistant double-sided tape to form a micropillar array channel. (3) The mold was placed in a container, and PDMS gel composed of a mixture of a PDMS base and a curing agent in a 1:1 ratio was poured into the container.…”

“…Compared with other textures, micro-dimple arrays have garnered more attention because they exhibit excellent tribological properties [1]. In sliding lubricated concentrated point contacts under linear reciprocating motion, at a high sliding velocity, the decrease in the coefficient of friction in the presence of surface texture is greater than that observed for the ground surface, and this is due to better retention of the lubricant in the micro-dimples [2]. In comparing a lapped smooth surface to a structured surface with a dimple size of approximately 100 m at a density of 5-20%, it has been observed that the dimple surface reduced the friction coefficient from 0.12 to 0.10 [3].…”

A theoretical study of ionic liquid lubricated μ-EHL line contacts considering surface texture

“…Friction and vibration too are invariably influenced by surface roughness. It is observed that the friction coefficient is significantly reduced due to texturing in rolling, sliding and reciprocating contacts [13,14]. Xialei Wang et al [15] investigated the effect of dimple size on friction in line contacts and found that the pattern with dimple diameter of 20 microns presents significant friction reducing effect.…”