EFFECT OF MACHINABILITY OF GNP–GFRP COMPOSITES ON TENSILE STRENGTH AND FATIGUE BEHAVIOR

Tolga Topkaya, YAHYA HIÅžMAN Çelä°k () and Erol Kilickap ()
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Tolga Topkaya: Engineering and Architecture Faculty, Mechanical Engineering Department, Batman University, 72060 Batman, Turkey
YAHYA HIÅžMAN Çelä°k: Engineering and Architecture Faculty, Mechanical Engineering Department, Batman University, 72060 Batman, Turkey
Erol Kilickap: ��Engineering Faculty, Department of Mechanical Engineering, Dicle University, Diyarbakır, Turkey

Surface Review and Letters (SRL), 2024, vol. 31, issue 06, 1-12

Abstract: The paper focuses on the cutting behavior of Glass Fiber Reinforced Polymer (GFRP) composites and GNP–GFRP composites that contain varying amounts of Graphene Nano Platelets (GNP). GFRP composites are increasingly being used in a variety of industrial applications due to their excellent mechanical properties, such as high strength, stiffness, and low weight. However, their machining and cutting behavior can be challenging due to the presence of the reinforcing fibers. Therefore, the study aims to investigate the machining behavior of GFRP composites and the effect of adding GNP on their cutting behavior. The effect of different parameters such as cutting speed, feed rate and reinforcement rate on cutting forces and delamination factor is investigated. In addition, the tensile strength and fatigue behavior of the composite materials with the best and worst delamination factors were also determined. Addition of up to 0.2 wt.% of GNP to GFRP composites resulted in an increase in cutting forces and delamination factor when drilling GFRP composites. While the cutting force and delamination factor decreased with the increase in cutting speed, the cutting force and delamination factor increased with the increase in the feed rate. Analysis of variance (ANOVA) was performed to determine the effects of drilling parameters and reinforcement ratio on cutting force and delamination factor according to full factorial experimental design. The most efficient factor on the cutting forces is found to be feed rate (84.97%), followed by the reinforced rate (6.48%) and cutting speed (6.13%). The most efficient factor on the delamination factor is determined to be feed rate for (44.49%), followed by the reinforced rate (29.20%) and cutting speed (21.73%).

Keywords: Graphene; fatigue; GFRP; drilling (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0218625X24500422

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