Bindu Madhavan Vijaya Ramnath

Nowadays, industries place a strong emphasis on low-cost, biodegradable materials with long lifespans. As a result, businesses are concentrating on creating composite materials utilizing the world’s plentiful supply of natural fibers. In this study, acacia and raffia fibers are combined with epoxy resin and a hand layup method to create a biodegradable composite laminate. This article investigates the effect of fiber orientation on the mechanical and morphological evaluation of composite materials that have been manufactured. Three different kinds of composites were fabricated in this work: Composite 1, which contained acacia fiber; Composite 2, which was built of acacia and raffia fiber; and Composite 3, which was made of raffia fiber. While Composite 2 is a hybrid composite in this instance, Composites 1 and 3 are monofiber composites. In accordance with the ASTM standards, testing was performed to investigate the different mechanical behaviors, including tensile, flexural, double shear, delamination, hardness, and impact. The results demonstrate that Composite 1 has strong tensile strength, flexural strength, double shear, and hardness tests with a 45° fiber orientation. The 90° fiber orientation of Composite 1 performs well in the inter delamination test. The result demonstrates that composite 1 of type 0 absorbs greater energy. Additionally, Scanning electron microscopy was used to conduct morphological examinations in order to investigate the internal structural failure of the composites. It was found that the composite laminate has fiber cracks, pullouts, and voids, which were reduced with the right curing times and stress.

This research paper deals with the fabrication procedure and the testing process of metal matrix composite material comprising of Aluminium and Silicon Carbide in addition with Carbon Nanotubes. Aluminium composites are preferred in manufacturing of various industrial machine components and automobile parts due to their favourable properties like low density which thereby results in their light weight, high strength and superior malleability comparatively to iron carbon alloys like steel and cast iron. When Silicon Carbide is added it helps in furthering the thermal conductivity and melting point properties of Aluminium in addition to improving its hardness.The addition of Carbon Nanotubes potentially helps in further improving the tensile strength of the metal matrix composite. In this study four samples of different compositions of Silicon Carbide are prepared and studied. The fabrication process is done by Stir casting carries out by adding the required additives into the molten mixture of aluminium followed by continuous stirring. After solidification for a period of time the samples are cut according to standard dimensions for carrying out the testing procedures. The various test procedures like hardness and impact tests were conducted to study the mechanical properties of obtained metal matrix composite. The various results inferred from the tests are analysed and subjected to comparison with each other in this study.

All Metal Matrix Composites are new materials which is a combination of molten metal called matrix and strengthening particles called reinforcement. This paper reveals the reinforcement of Zircon sand and fly ash with Aluminium alloy (LM6) with a specific ratio using stir casting technique to fabricate MMC. Here, Mechanical property namely tensile strength, hardness and Flexural strength are evaluated along with the Wear Analysis in Pin-on-Disc Apparatus under Abrasive Wear condition. The result shows that sample 4 has highest tensile strength of 170 MPa with hardness value of 57 HB. Also, the sample exhibited more wear resistance than other samples.

Natural fiber reinforced composites is an emerging area in polymer science. These natural fibers are low cost fibers with low density and high specific properties. In this paper, hybrid composite is fabricated with basalt fibre as a major constituents and glass fibre reinforced polymer as are in forcing agent. The method used for manufacturing the composite is handlay method in which all the operations are done manually at room temperature. The objective of this investigation was to study the effect of surface modifications and also the mechanical properties, including shear and impact strengths of composite fibre. Variations in mechanical properties such as the impact strength of various specimens were calculated using a computer-assisted universal testing machine and an Izod Impact testing machine.

Metal matrix composites (MMC) are the combination of two or more dissimilar base metals which in turn gives new metal. Composites have better properties than their base material. Nowadays, composites play the major role in manufacturing industries especially in automotive industry. This paper reveals the reinforcement of Aluminium alloy (6061) with Silicon Carbide and Copper in different ratios to produce new composite using stir casting technique in normal atmospheric temperature. In this work, mechanical behavior of the composite namely tensile strength, hardness and Flexural strength were evaluated. It was observed that sample 2 shows highest tensile strength of 155 MPa with hardness 73. The result shows that the hybrid composite had better mechanical property.