Mechanical Performances of Twill Kenaf Woven Fiber Reinforced Polyester Composites

Abstract

Natural fibres have the potential aspect to replace glass fibre reinforced composites. One of these fibers is kenaf. It is also one of the selected natural fibres that have bio resource profit regarding on their capability to absorb energy absorption especially. In order to prove the application of this fiber for the load-bearing application, the fiber in the form of yarn is weaved into fiber mat and reinforced with the plastic resin. This study focused on the twill yarn kenaf woven composite structure. Composites were prepared using the hand lay-up method with different type of orientation where the orientation is designed using Taguchi method. The hardened composites were cured for 24 hours in an ambient temperature before it was shaped according to ASTM D3039. The samples were then stressed uni-axially to obtain the stress-strain curves. The result shows the fiber orientations were significant factor in determining the performance of tensile strength. In this work, fiber mats are then optimized and the results showed that the values of tensile and modulus strength were 55.738 MPa and 5761.704 Joule, which is increased 3.77% and 4.23% for tensile strength and Young modulus, respectively. By comparing fracture mechanism before and after optimizations, there was clear decreasing fracture surface. It indicated that, the mechanical behavior performances of the twill woven kenaf reinforced composites can be effectively improved by this method.

Synthesis and Characterization of Coir and Luffa Cylindrica filled with CaCO3 hybrid composites

“…Most polymers melt or degrade earlier than 200°C. However, there is a class of thermally stable polymers that are able to bear up temperatures of at least 300°C in air and 500°C in inert gases without structural changes or strength loss, which can be analyzed by TGA [30,32]. All the measurements were conducted under inert gas (nitrogen), keeping a constant heating rate of 10 o C/min and using an aluminium crucible with a pin hole.…”

Mechanical Properties of PCL/PLA/PEG composite blended with different molecular weight (MW) of PEG for Fused Deposition Modelling (FDM) filament wire.

“…The tensile strength of the blends largely depends upon the strength and molecular weight of PEG components. It is well-known that increased of molecular weight of PEG increases intermolecular forces and surface energy, and makes molecular chain entanglement easier, but simultaneously reduces the slippage of PCL/PLA molecular chains under tensile loading, resulting in an increase in tensile strength [10] [11]. This reflect the result achived where higher Mw gives better result compare to low Mw PEG.…”

Synthesis and Characterization of PLA/Luffa Cylindrica Composite Films

“…Further, the Luffa Cylindrica can lead to several applications in food and pharmaceutical industries which are evident in the published papers. There are few works based on these fibers, and suggested suitable applications based on the obtained mechanical properties of the composite materials [21][22][23].…”