OPTIMAL DESIGN AND CHARACTERIZATION OF PLANTAIN FIBER REINFORCED POLYESTER MATRICES

AUTHOR: OKAFOR, EMEKA CHRISTIAN

DEPARTMENT: INDUSTRIAL/PRODUCTION ENGINEERING

AFFILIATION: NNAMDI AZIKIWE UNIVERSITY, AWKA

This study involved design and manufacture of a natural fiber based composite at optimal levels of factor combinations to achieve maximum strength. A plan of experiments based on the Taguchi technique was performed to acquire data in a controlled way. Taguchi Robust Design, Response Surface Methodology and Finite Element Methods were applied to optimize the tensile strength, flexural strength and Brinell hardness of plantain fibers reinforced composite (PFRC). These properties were determined for empty fruit bunch fibers (EFBF) and pseudo stem fibers (PSF) of the plantain plant. Tensile, flexural, Brinell hardness and impact tests were conducted on replicated samples of the two types of plantain fibers reinforced polyester (PFRP) using Archimedes principles in each case to determine the volume fraction of fibers. The Taguchi robust design technique was applied for the greater-the-better to obtain the highest signal-to-noise ratio (SNratio) for the quality characteristics (strengths) in the determination of optimum factor control levels which were then used to optimize the mechanical properties of PFRP applying response surface method (RSM) of Design-expert 8 software. The Finite element method was applied in the computation of stress distribution and prediction of material failure zones. The morphology of the composites were examined by scanning electron microscopy (SEM) while the Fourier transform infrared spectroscopy (FTIR) was used in identifying chemical bonds and composition of materials for plantain fiber and composites. The Nitrogen adsorption/desorption isotherm (NAD) studies established influences of fibers modification on the properties studied. The yield strength, tensile strength, flexural strength, Brinell hardness and impact strength of the plantain empty fruit bunch fibers reinforced composites (PEFBFRC) were found to be 33.69MPa, 41.68MPa, 46.31MPa, 19.15N/mm2 and 158.01KJ/m2 respectively while those for the plantain pseudo stem fibers reinforced composite (PPSFRC) were 29.24MPa, 34.76MPa, 45.94MPa, 18.59N/mm2 and 158.01KJ/m2 respectively. The PEFBFRC with average light absorbance peak of 45.47 was found to have better mechanical properties than the PPSFRC with average light absorbance peak of 45.77.

TO VIEW THE FULL CONTENT OF THIS DOCUMENT, PLEASE VISIT THE UNIZIK LIBRARY WEBSITE USING THIS LINK, http://naulibrary.org/dglibrary/admin/book_directory/Thesis/11677.pdf

Advertisements

Tags: , , , , , , , , , , , , , ,

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: