Abstract
Recently, composite materials were widely used in different applications due to their lightweight, and good thermal and mechanical properties. In this study, an attempt to manufacture laminate composites by hand layup was performed. Also, optimal parameters for the best surface roughness were investigated. Therefore, three parameters had been examined; spindle speed, feed rate, and depth of cut. The L9 Taguchi orthogonal array, signal to noise (S/N) ratio, and analysis of variance (ANOVA) were selected to determine the optimum parameters. To create composites, the compression method was employed. Four different types of composites were manufactured with 2.8 mm thickness, to determine the effect of the parameters on the surface roughness and for specified parameters using the CNC milling machine. The weight fraction ratio of fibers was 39%, the polymer was 34%, and 27% for Aluminum. The results showed that the optimum parameters for surface roughness in milling machine of composites for Polyester resin for aluminum–fiberglass composite are; spindle speed=5000 r.p.m, feed rate=1600 mm/min, depth of cut=1.6 mm and Ra=1.853 μm, and for epoxy resin; aluminum–carbon fiber composite is spindle speed=4000 r.p.m, feed rate=800 mm/min, depth of cut=1.2 mm and Ra=2.43 μm.
Highlights
In this paper, the materials used were 6.35 mm thick aluminum and CFRP (Carbon fiber reinforced polymer) with and without PML thermal protection
The CFRP was fabricated from unidirectional carbon fiber-epoxy prepreg tape
The results showed that during the machining process, the workpiece surface temperature increased with the increase in feed rate and fiber orientation influenced the developed temperature in the laminate [6]
Summary
The materials used were 6.35 mm thick aluminum and CFRP (Carbon fiber reinforced polymer) with and without PML thermal protection. The CFRP was fabricated from unidirectional carbon fiber-epoxy prepreg tape. The aluminum alloy 2024-0 sheets were used and unidirectional carbon fiber prepreg. The result of 1 mm/min in the plain weave CFRP has lower loading than unidirectional fiber [2]. To produce metalliccoated carbon fiber-based composites, a new innovative technique that combines Cold Spray and lay-up molding of composites are envisioned. This paper presents the experimental approach developed to produce metallic-coated carbon fiber reinforced composites and demonstrates the manufacturability of such components. The closed mold was held under compression for 24hours at room temperature.
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