Glass fiber-reinforced polypropylene composites often replace the conventional materials due to their special or unique mechanical properties. As the applications of these composites increase for a number of industries, drilling of these composites is inevitable for subsequent composite product manufacturing stage. In the drilling of composites, the thrust force is induced during the drilling operation; as a result, it causes damage.
This damage is characterized by the delamination factor, which depends on the machining parameters such as speed of the spindle, feed rate, and drill diameter. The study on the delamination in the drilling of glass fiber-reinforced polypropylene is limited and has been carried out comprehensively. The effect of machining parameters on delamination in the drilling of glass fiber-strengthened polypropylene GFR-PP composites is studied through the Box—Bhenken design.
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Response surface method, along with the desirability analysis, is used for modeling and optimization of delamination factor in the drilling. The result proves that the models are effectively used to forecast the delamination in the drilling of GFR-PP composites. Also, the result indicates that the foremost issue that influences the delamination is the feed rate.
Skip to Main Content. Search in: This Journal Anywhere. Advanced search. Submit an article Journal homepage. This approach can be extended to consider different drill bit types, several drilling parameters, general layup and material properties of fiber reinforced composites. Peridynamic modeling of drilling process in polymer matrix composites.
Modeling Tools for the Drilling of Polymer Matrix Composites (PMCs) | iqegumybiwyf.ml
N2 - This study concerns the PD modeling of the drilling process in polymer matrix laminated composites. AB - This study concerns the PD modeling of the drilling process in polymer matrix laminated composites. Aerospace and Mechanical Engineering. Abstract This study concerns the PD modeling of the drilling process in polymer matrix laminated composites.
Fingerprint Polymer matrix composites. However, due to the presence of two or more dissimilar phases, hybrid composite materials expose challenges during machining as well as material characterization. Polymer based composites also provide good design, flexibility and high dielectric strength and usually require lower tooling costs. In machining processes, the quality of the component is greatly influenced by various process T. Jagannatha and G.
Modeling Tools for the Drilling of Polymer Matrix Composites (PMCs)
Drilling which is a secondary machining process is per-formed on fiber reinforced hybrid polymer composites to know the effect of various factors during machining. Drilling is the most widely used for machining of composite materials, the effect of thrust force and torque that occurs during drilling to obtain a profile to fasten the composites in aerospace, automotive and machine tool industries.
The main concern in the drilling of composite to understand the relationship among the various controllable parameters and to identify the important parameters that influence the quality of holes drilled. Mathew et al. Trepanning tools, which were used in this study, were found to give reduced thrust while making holes in thin laminated carbon fiber reinforced polymer composites.
In his work the peculiarities of trepanning over the drilling of unidirectional composites has been emphasized. Sonbaty et al.
These parameters include cutting speed, feed, drill size and fiber volume fraction. Zitoune et al. The experimental results showed that the quality of holes can be improved by proper selection of cutting parameters. This is substantiated by monitoring thrust force, torque, surface finish, circularity and hole diameter. Capello and Tagliaferri  studied to clarify the interaction mechanisms between the drilling tool and material. Drilling tests were carried out on glass-polyester composites using standard HSS tool, drilling was interrupted at preset depths to study damage development during drilling.
Arul et al.
Using HSS drill, a series of vibratory drilling and conventional drilling experiments were conducted on glass fabric reinforced polymer composites to determine delamination factor. Hocheng and Tsao  studied the critical thrust force and delamination on carbon fiber reinforced polymer composites. The advantage of these special drills were illustrated mathematically as well as experimentally, that their thrust force is distributed toward the drill periphery instead of being concentrated at the center. Lin and Chen  carried out a study on drilling composite materials at high speed and concluded that an increase in the cutting velocity leads to an increasing tool wear that in turn provokes it an increase in the thrust force .
Abrao et al. This review highlighted the various aspects of on drilling of glass and carbon fiber reinforced polymers. Further, aspects such as tool materials and geometry, machining parameters and their influence on the thrust force and torque T. Additionally, the quality of the holes produced is also assessed, with special attention paid to the delamination damage.
Drilling of composite materials is different than drilling of metals as drill has to pass alternatively through plastic matrix and fiber reinforcement which have different properties. The difference in the physical and chemical properties of the constituents makes the understanding of the mechanism of material removal quite complex. Material removal during drilling of composites involves series of fractures aided by diverse nature and uneven load sharing between matrix and fiber . The present work is to study the influence of process parameters on thrust force in drilling of glass fiber and carbon fiber reinforced in epoxy polymer matrix hybrid composites.
The effect of different feed rate, spindle speed, type of cutting tool of 3 mm, 6 mm and 9 mm diameters on thrust force in drilling of hybrid composite were studied. Polymers division, Valsad, Gujarat, India. The glass fiber of bi-directional woven mat with gsm and the density of 2. The carbon fiber of bi-directional woven mat with gsm and the density of 1. The glass fiber and carbon fiber used in the fabrication of hybrid fiber reinforced composites are shown in figure 1.