The research described in this article focuses on combining fiber and nano SiC into epoxy matrices to create advanced composite materials. Our investigation has revealed significant advancements in the mechanical characteristics and water resistance of these composites following a series of exhaustive tests. Tensile testing showed that as the percentage of fiber increased, tensile strength significantly improved. Remarkably, Material 2, which is composed of 40% fiber and 60% epoxy, showed the reinforcing effect of fiber dispersion with a tensile strength of 138 MPa. Materials 3, 4, and 5 were then treated with micro SiC to increase their tensile strength; Material 5 reached a maximum of 156 MPa. Similar trends were shown in impact tests, where Material 2's impact resistance surpassed that of pure epoxy. Effective composite preparation is necessary, as evidenced by the even better impact resistance of later composites with nano SiC added. These results were validated by hardness testing, which showed that materials containing nano SiC and fiber had improved hardness values, suggesting a greater resistance to deformation. The research revealed that altering the composite compositions led to a decrease in water absorption, highlighting the materials' appropriateness for use in environments that are resistant to moisture. SEM examination has validated the uniform dispersion and strong bond between the fibers and nano SiC particles; thus, the quality of the composite production is confirmed by the results obtained. Therefore, the proposed epoxy composite with pineapple fiber and SiC nanoparticles can be used in various industries, such as aerospace, automotive, and construction. Keywords:
This optimization investigation focused on the reinforced metal matrix composite of aluminium alloy. Novel of this work is to fabricate the AA6066 composite with HSS and Cu, continually conduct machining tests, and evaluate the tool wear, surface roughness, and thrust force of the stir‐casted specimens. The aluminium composite has 90 percentage of AA6066 alloy reinforcement with six percentage of high‐speed steel and four percentage of copper alloy made by the casting method. The fabricated composites’ turning parameters were optimized through the Taguchi method. The turning operation can be done with the help of the normal lathe with the CBN insert tool. The operation parameters such as feed, depth of cut, and steam pressure of the cutting fluid were considered with three different equal intervals in each parameter. In this investigation, the L9 orthogonal array method is used to identify the optimum values of the turning parameters among the considered machining parameters concerning the response such as wear on the turning tool and thrust forces created on machining. The outcome based on the parameters was identified and mentioned as the rank order for individual and combination of all responses with different conditions. Then, the separate and combined optimized input parameters were provided as the conclusion.
Abstract High toughness epoxy resin hybrid composites were prepared using nanoclay, SiC, and glass‐caryota intra ply fibers. The main aim of this research was to study the effect of adding Caryota urens natural fiber from biomass as a potential fiber along with synthetic glass fiber in load‐bearing and wear properties of nanoclay and silicon carbide (SiC) particle toughened epoxy composite. The intra‐ply glass‐caryota fiber, silicon carbide, and nanoclay were surface‐treated using 3‐Aminopropyltrimethoxysilane. The composites were prepared using the hand lay‐up method. The tensile result shows that the addition of 1 vol% of the silicon carbide particle along with nanoclay in intra‐ply glass‐caryota fiber‐reinforced epoxy composite gives improved results than other composite designations. The wear properties show that the addition of silicon carbide of 1.0 vol% gives a lower specific wear rate of 0.024 mm 3 /Nm. Similarly, the composite, which contains 1.0 vol% of silicon carbide and nanoclay gives higher penetration resistance and energy absorption. In all properties, the addition of silicon carbide modifies the values significantly. This high toughness intra‐ply glass‐caryota fiber‐reinforced silicon carbide/nanoclay toughened epoxy resin composite could be used in automotive, sports components, domestic appliances, and structural body applications.
Steam turbine convert a part of the energy of the steam evidenced by high temperature and pressure into mechanical power-in turn electrical power. The steam from the boiler is expanded in a nozzle, resulting in the emission of high velocity jet. This jet of steam impinges on the moving vanes or blades, mounted on a shaft. Here it undergoes a change of direction of motion which gives rise to a change in momentum and therefore a force. The motive power in a steam turbine is obtained by the rate of change.
By the application of the three-point metal forming process, copious shapes can be formed. While doing the forming process, various unavoidable sheet metal defects will occur. This paper predominantly emphasizes springback and roughness defects and investigates the effects of these parameters with terpolymer Acrylonitrile Butadiene Styrene (ABS) fiber tool punch. Low-cost tooling and quality part development benefit from fiber tool punch over traditional steel tool punch. The springback and surface roughness are analyzed in the AA6061 sheet using steel and fiber punch in three-point U-bending operations, which are carried out as per ASTM standards. For this purpose, steel and fiber punch with nose diameters of 4, 8, and 12 mm and sheet metals of thicknesses 1 and 2 mm are used. The 8%–10% reduction in springback is achieved in fiber punch than steel punch. Also, the fiber punch offers 10%–47%better surface roughness than the steel punch. As the diameter of the punch increases, the roughness value also increases irrespective of the punch material. The fiber – reinforced ABS punch presents an attractive opportunity to reduce the springback effect and improve the surface quality of the finished product.
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