GFRP Composites

1380 Words 6 Pages
Machining of GFRP laminate materials is difficult due to their anisotropic and non homogeneity in nature which consist of distinctly different phases, their response to machining. Machining of composite materials is rarely avoided in view of losing the strength of components due to interlayer fracture and delamination damage. In specific situations where metal inserts are inevitable in case of joining or affixing with other mating part, in this situation milling and drilling operations can’t be avoided with respect to aerospace and automobile structures. The scope and need of the paper is mainly focused on acquiring better machining quality surfaces with minimal damages are much needed to maintain the proper post machined texture of composite …show more content…
Therefore GFRP composites are widely used in automobiles, applications such as racing car bodies, sports goods and aerospace components. However, each composite differs in its machining behavior because of its physical and mechanical properties. Milling is a machining operation to produce closed dimensional accuracy with less damages 1. The surface finish is an important characteristic that would be effective on mechanical behavior and dimensional accuracy of machining process, in this connection researcher has …show more content…
The volume fraction was found by conduction of burning test (ASTM D2548-68)20 and specimens are regulated by defect (voids) free. GFRP laminates are shaped by size of 100mmx100mmx10 mm by diamond dressed abrasive wheel cutter. In this study, the experiments are carried out on a conventional universal milling machine incorporated by high speed spindle motor 10HP to perform slots on work pieces with solid carbide end mill cutter l of 10mm diameter. Three input variable quality factors selected as machining process parameters; spindle speeds are 690RPM, 960RPM, 1153RPM and 1950RPM and 2500RPM; feeds are 1 mm/Sec, 2 mm/Sec and 3 mm/Sec, and depth of cut 2mm respectively. Here the machining component forces are FX-feed force, Fy-cutting force and Fz-Thrust force, therefore resultant force ‘F’ is obtained by F = √Fx2+ Fy2+ Fz2 taking the values of each force by mill tool dynamometer have the range of force measurement magnification of 0 to 50 Kgf in co-ordinate direction. To minimize the work piece vibrations, the laminates are properly placed on special designed fixture, which is centrally located in multidirectional force measurement mill tool dynamometer as shown in figure1. The surface roughness was measured

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