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Effects of cutting parameters on delamination during drilling of Polyphthalamide (PPA) Matrix Composite Material with 30% Glass Fiber Reinforcement

100%
Ficici F., Ayparcasi Z.
Acta Physica Polonica A
|
2015
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vol. 127
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issue 4
1118-1120
EN
The drilling of glass fiber reinforced plastics (GFRP) often results in damage around the drilled hole. The drilling of such composite material may generate delamination of drilled holes on workpiece. The aim of this research is to investigate the influence of the drilling parameters, such as cutting speed, feed rate and differences in cutting materials on delamination produced while drilling GFRP composite. The experimental results indicate that the feed rate is the most significant factor, followed by spindle speed and cutting tool material. The best results were obtained at lower feed rates and higher spindle speeds when using Carbide drill.
2
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Investigation of the Delamination Factor of Glass Sphere and Silicon Particle Reinforced (GS-SCR) Hybrid Composite Material

81%
Dundar M., Ficici F., Ozen F., Unal H.
Acta Physica Polonica A
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2017
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vol. 131
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issue 3
595-597
EN
Reinforced polymer composite materials have opened a new era because they can substitute the conventional metallic materials. These materials have found numerous usage areas, especially in aviation, military and space applications due to such advantages as the high tensile strength, high modulus, high corrosion resistance and low density. However, during the assembly of parts from these materials, a huge amount of holes is required. There are problems during machining of reinforced polymer composite materials. Main reason behind these problems is the inhomogeneous microstructure. Some of these problems are burr, pullout, swelling, microcrack, rapid tool wear and delamination. Among the most important of these defects is the delamination damage. Delamination is a severe drilling failure. In this work, three different cutting speeds (15, 20, 25 m/min), three different feed rates (0.05, 0.10, 0.15 mm/rev) and three different cutting tool materials (Carbide, TiN Coated HSS and HSS) have been used. Effect of different feed rates, cutting speeds and tool materials on delamination is studied by drilling of %10 glass sphere- and %10 silicon particle-reinforced polypropylene hybrid composite material.
3
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Investigation of Mechanical and Dry Sliding Wear Behaviours of AlB_2/PE Polymer Matrix Composites

81%
Savaş Ö., Ficici F., Kayikci R., Köksal S.
Acta Physica Polonica A
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2014
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vol. 125
|
issue 2
388-390
EN
In this study, mechanical and wear behaviour of polymer-boride composite (AlB_2/PE) materials produced through pressure moulding technique have been experimentally investigated. Three different composite materials that include 5 wt%, 10 wt%, and 20 wt% AlB_2 reinforcement phase were tested using pin-on-disk arrangement. Compared with the matrix, the 20 wt% AlB_2 composite shows a 71% increase in the ultimate tensile strength and the highest wear resistance.
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