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Abrasive water jet (AWJ) machining process is non-conventional machining process, which has been used in industrial applications. AWJ machining process operates at relatively high pressure, 200-400 Mpa and focused stream of abrasive particles carried by high pressure water is made to impinge on the work material is removed by erosion by high velocity Abrasive particles. In abrasive water jet machining process pure water is used and for abrasive particles like sand (SiO 2), glass beads, Aluminum oxide, silicon carbide and garnet is generally used. In this paper different experiments will be performed on Al6082 work piece by varying various parameters such as water pressure, traverse rate, abrasive flow rate and abrasive mesh size determine Material Removal rate and Kerf width, Surface roughness. Here, TOPSIS (Technique for order of preference by similarity to ideal solution) method is used for optimizing various parameters to obtain maximum material removal rate and Kerf width, surface roughness.

In order to curb the fuel consumption and corresponding CO2 emission, defence, automobile, and aerospace industries are leaning towards the use of light weight‐high stiffness engineered materials like fiber reinforced polymer composites (FRPCs). One of the major advantages of FRPCs is that various properties (stiffness, tensile strength, flexural strength, etc.) can be tailored according to requirements of the application. Architecture of the reinforcement used in FRPCs has been proved to affect these properties substantially. Composite materials have seen a lot of advancement in the field of reinforcement architectures starting from the plain‐woven fabrics to advanced 3D braided/woven preforms. The architecture of reinforcement must be wisely selected to design the required properties of developed composites and to reduce the overall cost without compromising the performance. The problem addressed in the present study is the selection of reinforcement architecture while developing a composite material. 2D Plain woven reinforcements are better than other reinforcements in terms of in‐plane properties but their out‐of‐plane properties are very poor. Therefore, advanced architectures like 3D woven fabrics, 5D Braided preforms, knitted preforms, and 3D needle punched fibers are being used in various high performance applications. The present article is an attempt to analyse the effect of various available architectures of reinforcement on the macroscopic mechanical properties of FRPC laminates and to propose a systematic way to select a reinforcement.

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Among several methods to fabricate Aluminium metal matrix composites, stir-casting technique is used for large-scale production due to its being less expensive. This research is concerned with the fabrication of Aluminium composites with SiC and Jute Ash Particles, for sake of producing a cost-effective composite with enhanced properties. Wear behaviour was studied using pin on disc tribometer and it was found that wear resistance increases with-addition of reinforcement particles. Fabricated composite samples showed almost 4 times better wear resistance compared to base material. Matrix metal reinforced with SiC showed the best wear resistance of all fabricated samples. Coefficient of friction significantly decreased with the presence of reinforcement due to formation of mechanical mixed layer. Tensile Strength was escalated with the introduction of reinforcement as load is transferred to strongly bonded reinforcement particles. Microhardness was enhanced with the introduction of reinforcement and Sample 2 with SiC as reinforcement showed the best microhardness. Microstructure and fractography of the base metal and fabricated composites was analyzed by Scanning Electron Microscope (SEM).