Abstract
In this present work, it is aimed to derivate machine force equations in drilling of [0°/+45°/90°/–45°] oriented glass fiber reinforced polymeric matrix composites (GFRP). Machining was performed on the GFRP samples using 118° point angle drills in dry conditions. During machining, drill torques and thrust force fluctuations were recorded with dynamometer–amplifier–computer combination at different feed rates and drill diameters. Subsequently, collected data were appreciated using mathematical model to investigate empirical relations between essential parameters. Subsequently, cutting forces on drilling of GFRP materials were calculated by investigated empirical equations and then results were compared with measured data to indicate verification of the derived equations on drilling of glass fiber reinforced polymeric matrix materials. Moreover, hole surface morphology of drilled GFRP samples were examined by using magnifying under optical microscope and scanning electron microscope (SEM).
Highlights
Glass fiber reinforced polymer matrix (GFRP) composite materials offer superior properties such as high specific strength, high specific modulus of elasticity, high damping capacity, good corrosion resistance, good tailoring ability, excellent fatigue resistance, good dimensional stability and a low coefficient of thermal expansion [1] to [8]
A cutting model for drilling was chosen to study the empirical equations related to the forces in a drilling process performed on GFRP
From the above study on the derivation of empirical equations related to GFRP using a conventional drill, the following results can be summarized
Summary
Glass fiber reinforced polymer matrix (GFRP) composite materials offer superior properties such as high specific strength, high specific modulus of elasticity, high damping capacity, good corrosion resistance, good tailoring ability, excellent fatigue resistance, good dimensional stability and a low coefficient of thermal expansion [1] to [8] They are used in many fields, such as the automotive, aerospace, sporting goods, marine, chemical industry, electrical industry, etc. Many researchers have investigated the effects of various parameters (cutting speed, feed rate, point angle, thrust force, cutting tool geometry, etc.) on the delamination behavior of GFRP composites [13] to [17] In addition to these studies, some researchers have investigated the modelling of the drilling of materials. It is important when modelling the cutting action to derive analytical equations that predict the machining forces as a function of process parameters
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