THERMAL AND MACHINABILITY BEHAVIORS OF UNCOATED AND NI-P COATED SISAL FIBER REINFORCED EPOXY COMPOSITES
Keywords:Sisal, Epoxy, TGA, DSC, Thrust force, Torque, Delamination factor, Ni-P coating
The natural fiber reinforced polymers have been successfully used in applications such as automobiles, constructions, infrastructure and other Industries because of its low cost, acceptable strength and stiffness, low weight and ease of degradable. The thermal, dimensional stability and machinability behaviours are generally studied in order to propose the application of composites. The thermal characteristics such as weight loss due to temperature and phase transition were studies for sisal-epoxy composites in the present investigation. The water, oil and chemical absorption characteristics were studied for coated and coated fiber reinforcements in composites. Drilling is a metal removal process and is important for the application of products during assembly. The present investigation is focused on the study of influence of drilling parameters such as spindle speed, feed rate on drilling characteristics such as thrust force, torque and delamination factor on uncoated and coated sisal fiber reinforced epoxy composites. The HSS twist drills were used and drilling test was carried out using MAXMILL CNC drilling machine. From the experimental observations, the drilling characteristics for various drill bits for the uncoated and coated sisal-epoxy composites were listed.
Satyanarayana, K G, Pillai, CKS, Sukumaran, K, Pillai, SGK, Rohatgi, PK&Vijayan, K 1982,„Structure property studies of fibers from various parts of the coconut tree‟, Journal of materials science, vol.17, no.8, pp.2453-2462.
Mallick, PK 1993, „Fiber-reinforced composites: materials, manufacturing, and design‟, CRC press, NewYork.
Khashaba, U. A., Seif, M. A. and Elhamid, M. A. “Drilling analysis of chopped composites”, Composites Part A: Applied Science and Manufacturing, Vol.38 (1), pp.61-70, 2007.
Abrao, M., Faria, P.E., Campos Rubio, J.C., Reis, P. and Paulo Davim, J. “Drilling of fiber reinforced plastics: A review”, Journal of Materials Processing Technology, Vol.186, pp. 1-7, 2007.
Marta Fernandes and Chris Cook. “Drilling of carbon composites using a one shot drill bit - Part II: empirical modeling of maximum thrust force”, International Journal of Machine Tools & Manufacture, Vol. 46, pp.76-79, 2006.
Bajpai, Pramendra Kumar, and Inderdeep Singh. "Drilling behavior of sisal fiber-reinforced polypropylene composite laminates." Journal of Reinforced Plastics and Composites 32, no. 20 (2013): 1569-1576.
Jayabal, S. and Natarajan, U. “Optimization of thrust force, torque, and tool wear in drilling of coir fiber reinforced composites using Nelder- mead and genetic algorithm methods”, International Journal of Advanced Manufacturing Technology, Vol. 51,pp. 371- 381,2010.
Velumani.S, Navaneetha Krishnan.P, Jayabal.S and R.Ramprasath, “Regression modeling and optimization of cutting parameters through Nelder mead simplex search and CCFD during drilling of Sisal-Glass/Vinyl ester composites“, International Journal of Machining and Machinability of Materials.vol. 14 No. 1, pp. 1-23, 2013.
Balaji, N. S, Jayabal.S and KalyanaSundaram.S 2016, “A Neural Network Based Prediction Modeling for Machinability Characteristics of Zea Fiber-Polyester Composites“, Transactions of the Indian Institute of Metals, Volume 69, Issue 4, pp 881–889.
Hemachandran.R, Pugazhvadivu.M and Jayabal.S, “Optimization of Tensile and Impact Behaviours of Randomly Oriented Short Sisal Fiber Reinforced Epoxy Composites Using Response Surface Methodology“, International Journal of ChemTech Research volume 9, issue 7, pp. 660-665, 2016.
Hemachandran.R, Pugazhvadivu.M and Jayabal.S, “Development of Electroless Ni-P Coatings on Sisal Fiber“, Fibers and Textiles in Eastern Europe, Vol. 25, 1(121), pp 32-35, 2017.