Browsing by Author "Shivakumar Gouda, P.S.S."

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    Impact of ply stacking sequence on the mechanical response of hybrid Jute-Banana fiber phenoplast composites
    (Institute of Physics, 2024) Maruthi Prashanth, B.H.; Ramesh, S.; Shivakumar Gouda, P.S.S.; Naik, G.M.; Sharma, P.; Jagadeesh, C.; Mahantesh, M.M.; Anne, G.
    Natural fiber composites are increasingly gaining popularity as a cost-effective and environmentally friendly alternative to synthetic fibers. Incorporating a variety of fibers enhances mechanical properties. The arrangement of fibers plays a crucial role in determining the mechanical characteristics of laminate composites. Therefore, the primary objective of this study is to investigate how the stacking order of jute (J) and banana (B) fibers affects the mechanical behaviour of composites made from phenolic resins. Four different fiber mat stacking sequences (J/B/B/J, B/J/J/B, J/B/J/B, and J/J/B/B) were used for developing the eco-fiber composites using the heat-press technique. Several mechanical parameters were assessed, including tensile strength, flexural strength, impact strength, and inter-laminar shear strength (ILSS). The experimental results indicated that the JBBJ composite exhibits superior tensile strength (46.65 MPa) and modulus (993 MPa) compared to the other composites due to the presence of high-strength jute fibers on the surface. Additionally, the flexural strength of the JBBJ composite (87.24 MPa) was found to be noteworthy. It was observed that the impact strength of jute fibers surpasses that of banana fibers. Consequently, the JBBJ composite demonstrates higher values for energy absorption (0.482 J) and impact strength (120 J m−1) compared to the other composites tested. Moreover, the JBBJ composite displays higher inter-laminar shear strength and hardness values compared to BJJB, JBJB, and JJBB by 30%, 35%, and 43%, respectively. Scanning electron microscope microphotographs reveal strong correlational fracture failure mechanisms, indicative of improved mechanical properties in the JBBJ composite. Based on the experimental results, it is evident that the JBBJ composite can be utilized in lightweight applications. © 2024 The Author(s). Published by IOP Publishing Ltd.
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    Physico-mechanical response of phenolic resin composites reinforced with jute and banana fibers
    (American Institute of Physics Inc. subs@aip.org, 2019) Prashanth, B.H.M.; Manjunath, T.S.; Shivakumar Gouda, P.S.S.; Sajjan, S.S.; Ramesh, S.
    In the present investigations, physico-mechanical properties of hybrid jute and banana fiber reinforced with the phenolic resin was made. The hybrid composites of jute and banana fiber were prepared with different weight ratios (40/20,20/40) incorporated with phenolic resin. These hybrid composites were manufactured using compression molding technique and evaluated mechanical properties such as tensile, impact strength, flexural strength,heat deflection temperature (HDT) analysis. It was observed that the weight ratios of jute and banana (40/20) gives the good mechanical and thermal properties as compare to the jute and banana (20/40). Further, fiber and matrix interfacial bonding of hybrid composite is observed using scanning electron microscope. © 2018 Author(s).