The aeronautical industry constantly strives for efficient technologies to facilitate hole-making in CFRP/Ti6Al4V structural components. prime challenge this direction is excessive tool wear because of the different engineering properties both materials. Nanofluid minimum quantity lubrication (NF-MQL) latest technology provide synergistic improvement tribological and function during machining. ...

Abstract This novel work presents the comparison of a newly developed ultra-high voltage electrostatic minimum quantity lubrication (EMQL) using customized nozzle with MQL technique as an alternative cooling/lubricating method in turning processes 15–5 PHSS. The optimum for EMQL within range 0–25 kV has been identified based on tribological performance. Besides, surface roughness measured to id...

We study the lubricated (wet) contact mechanics of a smooth hard cylinder sliding on a randomly rough nominally flat surface of a linear viscoelastic solid. We calculate the rolling and sliding friction, and study the transition from the boundary lubrication to the elasto-hydrodynamic lubrication regime. For the viscoelastic contact the minimum (average) separation does not monotonically increa...

Purpose – The purpose of this paper is to provide a practical review of metal working fluids and their implications to the machining practice. Despite their widespread use and applications, there are several scientific and economic factors that call for an investigation of current practices and development of new approaches. Design/methodology/approach – There are numerous methods that diverge ...

Alcohol aqueous solvents were prepared by individually adding n-propanol, isopropanol, 1,2-propanediol, and glycerol to deionized water for use as lubricants the electrostatic minimum quantity lubrication (EMQL) machining of aluminum alloys. The tribological characteristics those formulated alcohol under EMQL assessed using a four-ball configuration with an aluminum–steel contact, their static ...

Abstract: The standard decoupled method with Newton-generalized minimum residual procedure performs poorly or may break down when used to solve certain elastohydrodynamic lubrication problems. The authors Zargari et al., 2007 presented decoupled and coupled methods in which the limitations of the decoupled method for some set of physical parameters and slight variation in these values (physical...

The conventional pneumatic Minimum Quantity Lubrication (MQL), when not properly designed, may have poor atomization and insufficient wetting performance, resulting in higher oil mist concentration film formation ability the cutting zone. intervention of an external electric field can change mechanism microdroplets enhance lubrication cooling capability MQL. However, effect jet parameters on pe...

Abstract Research investigations conducted in the past has shown that conventional petroleum based lubricants can be replaced with vegetable lubricants. Vegetable oil do not pollute environment, as they are biodegradable. In this investigation, pongamia pinnata was used lubricant, to during turning experiments. The physico chemical properties of modified were evaluated. Ag Nanoparticles incorpo...