The statistical investigation of mechanical properties of PP/natural fibers composites |
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Authors: | Amirhossein Esfandiari |
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Institution: | (1) Department of Textile, Faculty of Technical and Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran |
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Abstract: | A systematic and statistical approach to evaluate and predict the properties of random discontinuous natural fiber reinforced
composites. Different composites based on polypropylene and reinforced with natural fibers have been made and their mechanical
properties are measured together with the distribution of the fiber size and the fiber diameter. The values obtained have
been related to the theoretical predictions, using a combination of the Griffith theory for the effective properties of the
natural fibers and the Halpin-Tsai equation for the elastic modulus of the composites. The relationships between experimental
results and theoretical predictions are statistically analyzed using a probability density function estimation approach based
on neural networks. The results show a more accurate expected value with respect to the traditional statistical function estimation
approach. In order to point out the particular features of natural fibers, the same proposed method is also applied to PP-glass
fiber composites. |
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Keywords: | Composites Micro-mechanic Mechanical properties Natural fiber Statistical |
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