Hybrid aluminum glass fiber laminates consist of glass fiber reinforced plastic (GFRP) bonded with thin aluminum sheets on either side. Laminates with different aluminum thickness and fiber volume fractions were fabricated by hand layup method and were tested under tensile loading. The variations in the elastic modulus, yield strength, and ultimate strength as well as the extent of delamination were studied. Rule of mixtures predictions of laminate properties under tensile loading compared well with the experimental results. Delamination was found to depend upon the thickness of aluminum alloy sheet, among other factors. Scanning electron microscopic pictures on the fractured hybrid specimen showed that the GFRP failure was due to fiber fracture, fiber pullout, and fiber matrix debonding. On an overall basis, the hybrid laminate showed a significant improvement in the mechanical properties when compared with the GFRP or monolithic aluminum. Though an increase in fiber volume fraction increases the elastic modulus, it does not have any notable effect on the failure mechanism or debonding of the hybrid aluminum glass fiber laminate.

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In earlier years before the invention of composites, weight was the major criteria in which most of the industries and earth moving vehicles suffered a lot because of handling and consumption of fuel. This problem was overcome by the introduction of composites in the late 1940's which replaced huge amounts of Iron and Steel parts used in industries, navy and other mobile vehicles. The composites are used mainly for it's high strength to weight ratio and resistance to corrosion and so on. Major types of composites are Ceramic matrix, Metal matrix, Polymer matrix etc. Apart from other types of composites, large developments have taken place in developing new Metal Matrix Composites (MMC's) which are used for a variety of purposes. This paper deals with the researches on Aluminium metal Matrix Composites (AMC's) reinforced with Fly Ash, WC, Mg particulates. These AMC's are used for it's low density, good wear resistance, good tensile strength, and good surface finish as observed by Kumar et al (2014). Srikanth et al (2015) has investigated the Aluminium Alloy of Grade Al6061 as a base metal reinforced with WC and Fly Ash. Babu Rao et al, (2010) reported that fly Ash is the most inexpensive, low density reinforcement received as waste from thermal power plants and hence it can be used advantageously. The specimen preparation is carried out by Stir Casting method which was the most common and cheapest means of manufacturing.