In this modern era, the natural fibers usage in automobile and construction sectors has been increased. The goal of the current work was to investigate the fiber orientation effect on dynamic mechanical properties of hybrid Pineapple Leaf Fibre (PALF) hybridized with basalt reinforced epoxy composite at changing vibration frequencies. Hand Lay-up technique was used to manufacture the composites by keeping the unidirectional basalt fabric as an outer layer by keeping PALF as inner layer followed by static compression method. Tensile and flexural moduli were also determined apart from storage modulus (E′) and damping factor (tan δ) for different PALF fiber angles. The results exemplified that not only the storage modulus and loss factor but also glass transition temperature (Tg) as well found to increase with frequency and also the fiber orientation angle has a greater impact on dynamic and static properties.
Tremendously and are usually designed in different laminate angles to serve for various operating conditions. The impact of change in laminate angle relative to the direction of application of load on the dynamic mechanical behavior of materials must be studied systematically. Properties such as biodegradability combined with low manufacture cost and physio-mechanical properties made the basalt fiber to emerge as an alternative material to synthetic fibers. For the current work, the effect of laminate angle on damping characteristics such as storage modulus, glass transition temperature and loss factor of the basalt-epoxy composite was analyzed at various frequencies using the Dynamic Mechanical Analyzer (DMA). The composite samples were made from a unidirectional basalt fabric and epoxy resin with a hardener, using a hand layup technique followed by the compression method. It was noticed that the storage modulus is remarkably affected by laminate angle and increase in frequency. Results also confirmed that the composite with a 0° laminate angle exhibits higher storage modulus whereas the composite with a 60° laminate angle has better damping properties, and the composite with a 45° laminate angle achieved the highest glass transition temperature.
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