Drilling analysis of coir-fibre-reinforced polyester composites

Abstract

An investigation has been carried out to make use of coir, a natural fibre abundantly available in India. Coir-polyester composites were prepared and their mechanical and machinability characteristics were studied. The short coir-fibre-reinforced composites exhibited the tensile, flexural and impact strength of 16⋅1709 MPa, 29⋅2611 MPa and 46⋅1740 J/m, respectively. The regression equations were developed and optimized for studying drilling characteristics of coir-polyester composites using the Taguchi approach. A drill bit diameter of 6 mm, spindle speed of 600 rpm and feed rate of 0⋅3 mm/rev gave the minimum value of thrust force, torque and tool wear in drilling analysis.

Fiber type effect on tribological behavior when cutting natural fiber reinforced plastics

“…Previous works has been invested particularly in the drilling and milling operations in order to identify the overall variability behavior of NFRP during machining process in terms of surface roughness, cutting forces and delamination factor using statistical analysis of variance. These studies [17][18][19][20][21][22][23][24][25][26] show that the cutting feed rate has larger effect on the cutting forces, delamination factor and surface roughness, followed by the tool diameter for drilling process and depth of cut in the case of milling operation. The cutting speed has the lowest contribution on the modification of the cut surface state.…”

Experimental study of coated tools effects in dry cutting of natural fiber reinforced plastics

“…The main outcome of these studies is that the feed rate has the larger contribution to the machining response [18][19][20][21][22][23][24][25][26][27]. Indeed, cutting forces, delamination factor and global surface roughness increase by feed rate increasing.…”

Open Hole Tension of Coir-angustifolia Haw Agave Fibers Reinforced Hybrid Composite after Drilling Process

“…The tensile strength of coir/glass hybrid composite tends to rise if increasing content of glass fiber in the composite [2]. Then, eco-friendly fibers used as reinforcement of hybrid composite are coir/jute fibers [5], coir/oil palm fibers [6], coir/sisal fibers [7], coir/angustifolia Haw agave fibers [8]. Development of these eco-friendly fibers of the hybrid composite is alternatively to change synthetic hybrid composites.…”