Design and Analysis of Carbon Fibre Composite Monorack Arm for Motorcycle

Monorack arm in the motorcycle is invented for the support of external topbox. However, load-bearing of the typical monorack arm made of common engineering metals is restricted to only 3 kilogram in which exceeding this load may result in failure. Therefore, alternative materials such as carbon fibre composite receives the spotlight for this project. With that being said, the project objectives were to propose several conceptual designs of monorack arm which were used to analyze with finite element methods. Next, fabrication of carbon fibre composite sample was required to perform experimental analysis. Accordingly, 3 conceptual designs of monorack arm in regard to design considerations under static stress application were established. Besides, 2 types of samples were fabricated for experimental analysis namely plain weave woven fabric carbon fibre and twill weave woven fabric carbon fibre. Samples of carbon fibre composites were fabricated to possess a higher fibre volume fraction than the matrix to add fibre strength in the composite. Final conceptual designs of monorack made were computed for structural analysis using ANSYS Workbench. During the simulation of conceptual models, design 2 of epoxy carbon woven (230 GPa) wet was found to show better structural results in comparison to other designs using the same material. Lastly, tensile test was performed on the fabricated test specimens of plain weave carbon fibre and twill weave carbon fibre according to ASTM standards whereby favourable results were shown to plain weave woven fabric carbon fibre

A design and fabrication of a solar agriculture water pumping system

This study explores the use of a solar driven water pump. PV technology replaces conventional electricity and diesel pumps by using solar energy to power DC or AC water pumps. The main objective of this study is to design and construct a solar-powered agriculture water pumping system and to evaluate its performance. The solar agriculture water pumping system used in this project consists of a 40-watt monocrystalline solar cell with an efficiency conversion of between 23% – 24%. This can supply power to a 16.8 W DC Flow Submersible Pump. It could lift the water up to 5m and a flow range of 700 Liter/Hour. The system also includes a PWM 30A Solar Charge Controller to regulate the input power to a 12V, 7.2A Sealed Rechargeable Battery. Finally, a 20m long watering kit with nozzles irrigation system is connected to a 12V DC Submersible Pump to water the plants