APPLICATION OF ANN AND RSM ON STRENGTH PROPERTIES OF ALKALI MERCERIZED HYBRID RAMIE-ISORA FIBRE REINFORCED BIODEGRADABLE POLYMER COMPOSITES
Abstract
The study is undertaken to find application of ANN and RSM on mechanical properties of alkali mercerized hybrid ramie-isora fibre reinforced biodegradable polymer composites. For this purpose hybrid ramie-isora fibre NaOH treatment concentration of 5 %, 10 % and 15 % were used. Samples were casted by using nine different sample mixtures with 3 Hrs, 6 Hrs and 9 Hrs hybrid ramie-isora fibre NaOH treatment durations. At the end of curing these casted samples were subjected to material strength tests like young’s modulus, yield strength and ultimate strength test. As can be seen in Figs. 3, 6 and 9 the training of the hybrid ramie-isora polyester composite young’s modulus, yield strength and ultimate strength ANN models are completed at 4 epochs with 1.34632e-028, 1.05181e-029 and 1.68849e-028  performances giving goals are 0 as desired for the validation of its tested values. Hybrid ramie-isora polyester composite young’s modulus, yield strength and ultimate strength ANN models output-target fits with the models of the form  have 38.04 %, 80.94 % and 37.31 % accuracies as observed from Figs. 4, 7 and 10 compared to RSM model possessing 99.82 %, 78.28 % and 99.82 %  accuracies also seen in Tables 6,. Hence, RSM model computational techniques present a better study and results for young’s modulus and ultimate strength judging from the accuracies of the models. While ANN model computational techniques present a better study and results for yield strength only judging from the accuracies of the models also. The control polyester composite materials young’s modulus, yield strength and ultimate strength are 155.65 MPa, 1.20 MPa and 2.36 MPa. The hybrid ramie-isora fibre with NaOH treatment of 5 %, 10 % and 15 % possess young’s modulus of 256.25 MPa, 253.92 MPa and 269.41 MPa, yield strength of 1.59 MPa, 1.71 MPa and 1.84 MPa and ultimate strength of 3.56 MPa, 3.36 MPa and 4.62 MPa, respectively. Young’s modulus improved by 63.14 to 81.41 %, yield strength enhancements of 10 to 97.50 % and ultimate strength increased by 38.98 to 93.22 %. Also, from strength properties models it is found that the hybrid ramie-isora fibre polyester polymer composites has optimum young’s modulus and ultimate strength with yield strength of 274.9 MPa and 94.409 MPa at 95 % adequacies with 2.121 MPa below 95 % adequacies at 5 % and 5 % with 5 % optimum hybrid ramie-isora fibre with NaOH treatment concentrations and 9 Hrs and 9.5 Hrs with 9 Hrs optimum ramie-isora fibre with NaOH treatment durations. At 99.82 % and 96.11 % with 78.28 % accuracies all at 0.7506 and 0.0292 with 0.0473 mean square errors. It was observed that hybrid ramie-isora fibre along with polyester mixture has significantly improved these properties. Regression analysis on experimental results generated some artificial neural network and response surface methodology models predicting the results in good agreement.
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KEYWORDS: Â Hybrid natural fibre, Biodegradable Composites, Polymer matrix, Alkali mercerization, Strength properties; ANN; RSM
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