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Ramprasath R.,Sri Aravindar Engineering College | Jayabal S.,Alagappa Chettiar College of Engineering And Technology
Indian Journal of Fibre and Textile Research | Year: 2015

The present investigation is focused on evaluation and optimization of impact behavior of bio particulated coir-vinyl ester composites. The bio particles such as groundnut shell, alumina and termite mound soil have been selected and their influences on the impact behavior of coir -vinyl ester composites are evaluated. The bio particulated composite fabrications are planned as per full factorial design with the different levels of fibre length, fibre content and particulate content. The impact strength of fabricated composites is evaluated. The nonlinear regression models are developed for the prediction of impact behaviors over the specified range of conditions. The fabrication parameters for the maximum value of impact behaviors are also determined using simulated annealing algorithm and conformance checking is carried out using post analysis. The optimum values of impact behaviors of 39.5, 45.9 and 52.1 kJ/m2 are obtained in coir-vinyl ester composites reinforced with groundnut shell, alumina and termite mound soil respectively. © 2015, National Institute of Science Communication and Information Resources (NISCAIR). All right reserved. Source


Ramprasath R.,Sri Aravindar Engineering College | Jayabal S.,Alagappa Chettiar College of Engineering And Technology | Sathiyamurthy S.,Sri Ramanujar Engineering College
Transactions of the Indian Institute of Metals | Year: 2014

Addition of red mud particles into coir fiber reinforced vinyl ester composites is investigated in this study. Red mud is the caustic insoluble waste residue generated during the alumina production from bauxite. The composites were fabricated by varying weight percentage of the red mud and length of the coir fiber in polymer matrix composites. The compression molding process was used for fabricating the composites and static mechanical tests like flexural and impact were conducted as per ASTM standards. The non linear regression models were developed and optimum conditions for better mechanical behavior were determined using Response Surface Methodology and Simulated Annealing algorithms. An intuitive analysis was conducted to determine the better value of mechanical behaviors within the ranges of fabrication parameters. © 2014 The Indian Institute of Metals - IIM. Source


Jayabal S.,Alagappa Chettiar College of Engineering And Technology | Rajamuneeswaran S.,Alagappa Chettiar College of Engineering And Technology | Ramprasath R.,Sri Aravindar Engineering College | Balaji N.S.,Alagappa Chettiar College of Engineering And Technology
Transactions of the Indian Institute of Metals | Year: 2013

The tensile, flexural and impact properties of calcium carbonate particles-impregnated coir fiber-reinforced polyester composites were evaluated. The short untreated green husk coir fibers were used as reinforcement materials in unsaturated polyester resin matrix. The composite fabrications were planned with the three levels of fiber parameters namely fiber length, fiber diameter and filler content as per design of experiments (DOE) and the mechanical properties were tested as per ASTM standards. An artificial neural network (ANN) model was developed to predict the mechanical properties and it was observed that the developed ANN model accurately predicted the mechanical properties within the ranges specified. © 2013 Indian Institute of Metals. Source


Navaneethakrishnan P.,Kongu Engineering College | Jayabal S.,Alagappa Chettiar College of Engineering And Technology | Ramprasath R.,Sri Aravindar Engineering College
International Journal of Machining and Machinability of Materials | Year: 2013

Drilling of holes in the assembly of structural frames of automobile and aircrafts are inevitable in order to make joining of parts. The drilling induced damage imparts reduced life and efficiency of parts. The present study attempts an effort to correlate drilling induced damage with drilling parameters during drilling on the Sisal-glass/vinyl ester hybrid composites. Diameter of drill, speed and feed rate were considered as significant factors and they control or minimise the drilling induced damages. Experiments were conducted under various cutting conditions as per design of experiments. Mathematical models for thrust force, torque and delamination factor were developed using non-linear regression equations. Optimisations of controlling parameters were done using Nelder-Mead simplex search method and central composite face centred design (CCFD). Analysis of variance (ANOVA) was used to study the effect of process parameters on drilling responses. The results revealed that the delamination can be effectively reduced in drilling of sisal-glass fibre composite materials by applying the lower feed rate values. Copyright © 2013 Inderscience Enterprises Ltd. Source


Ramprasath R.,Sri Aravindar Engineering College | Jayabal S.,Alagappa Chettiar College of Engineering And Technology | Sundaram S.K.,Alagappa Chettiar College of Engineering And Technology | Munde Y.S.,MKSSSs Cummins College of Engineering for Women
Macromolecular Symposia | Year: 2016

The use of natural fibers and bio-particles as reinforcement in polymeric composites is gaining keen interest in the field of cellulose based composite materials, due to its attractive properties such as light weight, low cost and biodegradability etc. Several studies in the past have reported major improvement in the mechanical behaviors of fiber reinforced polymer composites by impregnating bio-particulate with the matrix system. This investigation is aimed at introducing a hybrid reinforcement based polymer composites which uses rice husk as bio-particles and green husk coir as fibrous reinforcement. The composite sheets were fabricated as per full factorial design of experimental plan by varying the fabrication parameters namely fiber length, fiber content and particulate content. The effects of fabrication parameters on the impact properties of the composites were analyzed and favorable conditions to yield better impact strength were determined. The X-ray diffraction and Scanning electron microscopy techniques were used to characterize the bindability of rice husk and coir fibers in the resin system. A major improvement in the impact properties was inferred on impregnating rice husk bio-particles in coir-vinyl ester composites. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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