No abstract

No abstract

A customary ratio of vinyl ester (VER) and Polyurethane (PU) resin were chosen as the matrix material (blend) to attain the complete Interpenetrating Polymer Networks (IPN). In this course of research, the mechanical properties of the Banana fiber reinforced IPN (blend) matrix were thoroughly investigated by precisely varying the loading of polyurethane into vinylester as 0%, 10%, 20%, 30%, 40%, 50% PU respectively. Besides that, the fabricated banana fiber reinforced polyurethane loaded IPN laminate were experimentally investigated in order to characterize the strength of the laminate as per the ASTM standards. The test results exhibit that, strain rate of the laminate increases to many folds as compared (Tensile 0% PU -0.45% & 50% PU -3.1%, Flexural 0% PU -0.62% & 50% PU -3.73%) with the neat vinylester resin based banana fiber reinforced laminate. In addition to that, it also increases the impact strength and moisture resistance (Impact 0% PU -2.93 kJ/m 2 & 50% PU -8.01 kJ/m 2 , Moisture 0% PU -0.42% & 50% PU -0.96%) of the IPN laminate considerably depends upon the loading of the polyurethane. As well as to validate further, the fractured surfaces were assessed through Scanning Electron Microscope (SEM). Finally the experimental values were also cross-verified by analytical simulation software by using ANSYS. Finally, the cross-verification proved that both the results of experimental and FEA analysis of the material were in good co-relation with each other.

No abstract

The main objective of this study is that, to develop the possibility of exploration on the usage of coconut shell (CS) and its derivative of natural activated carbon (AC) filler material, in the motive to fabricate the natural filler reinforced hybrid composite. In this particular study, E-Glass fiber has been chosen as the primary reinforcement and various proportions of CS and AC powder have been selected as the filler components along with the epoxy resin (matrix). Six variants of laminates have been fabricated (GFE, 3% CS, 6% CS, 3% AC, 6% AC and 6% CS/AC) by keeping the E-glass fiber and epoxy as the constant mixture. Besides that, to validate the physical and thermal stability of the composites tests like, Fourier infrared spectroscopy, thermogravimetric analysis (TGA), Scanning Electron Microscope, Tensile, Flexural, Impact, Heat Deflection Test (HDT), Thermal conductivity and Moisture absorption tests have been conducted on all combinations. During the tests, it has been observed that tensile (3% AC—384 MPa), flexural (3% AC—435 MPa), impact (3% AC—19.5 kJ/m2), HDT and moisture values (0% Particulate—0.475%) have shown a significant surge in hybrid composites by slightly compromising the fall of value in moisture absorption on AC composites. Simultaneously, thermal conductivity (6% AC—2.67 W/mK), and TGA (of 6% AC—440°C) values have been found higher in AC epoxy compounds out of all combinations.

In this investigation, cascara/testa has been chosen as the particulate reinforcement agent along with the E-Glass fiber support, upon the epoxy matrix material. To carry out the experimental analysis, the standard ratio of cascara, testa and combinations of both have been selected as the particulate reinforcement, as 10% weight ratio of each respectively. Moreover to completely exploit mechanical behaviourism of the fabricated composite, physical analysis like tensile, flexural, impact and water absorption tests have been conducted as per the ASTM standards. In the pretext of the analysis, the strain rate of the tensile and flexural analysis has shown the increase of 3.5% and 2.75% respectively. In the same way, the impact analysis has also shown the hike in the absorption value as 1.25%, 1.12%. Furthermore the obtained results have shown that, the addition of cascara/testa have considerably increases the strain value and impact resistance of the fabricated specimens in sizeable manner by compromising the water uptake behaviour. Out of all standard tests, the hybrid composites (combination of cascara and testa) have shown the good conformity with all set of remaining specimens.

No abstract

No abstract