The Effect of Fiber Ply Orientation, Laminate Layer, and PLA content on Mechanical and Thermal Properties of Carbon Fiber Reinforced PLA Composites

Autor: Aulia Fajrin, 芳安禮
Rok vydání: 2018
Druh dokumentu: 學位論文 ; thesis
Popis: 106
In this study, carbon fiber was used to reinforce with two kinds of bioplastic materials PLA composites. The first PLA consist of 10% bio material content (the ecoflex of 80% and CaCO3 10%) and the second PLA consist of 45 % bio material content (the ecoflex of 45% and CaCO3 10%) were used as a matrix. The final composites used one and two layers of carbon fiber. The tensile, impact, and fatigue test was performed to study the mechanical properties of the composites. Composites specimens were subjected to uniaxial tensile. The interfacial adhesion of the fibers to the matrix was evaluated by Scanning Electron Microscope (SEM). Tensile test instrument was used to reveal the tensile strength behavior of the composites. The results showed that the tensile strength of PLA 10% with 45° orientation of two layers carbon fiber is less than that of PLA 45% with 45° orientation of two layers carbon fiber. The maximum tensile strength was observed for PLA 45% with 0° orientation of two layers carbon fiber. For composite with two layers of carbon fiber, the 0° orientation showed higher the tensile strength than for 45° orientation. The impact resistance by drop impact test is higher for composite with 0o orientation than 45o orientation. This impact resistance is slightly different due to the curve for each direction is almost overlapped. The mechanical strength of the composite depends on the orientation of carbon fiber ply and the number of layers. The thermal stability and limiting oxygen index provides that composite with PLA 45% more stable than composite with PLA 10% due to the higher content of PLA. This study appropriates to reduce the using of the non-biodegradable composite.
Databáze: Networked Digital Library of Theses & Dissertations
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