Search

Brake pad is very important nowadays. The performance of vehicle is getting better and better so the braking system also needs to be improved. The usage of asbestos material in manufacturing brake pad is found to be harmful and hazardous to human the environment. The brake dust that produced from the brake pad can cause several cancer to human especially lung cancer. Some research papers are investigating on natural fibres to replace harmful asbestos material. Modern simulation software is developed to simulate the properties of material. This study focuses on the mechanical simulation and thermal simulation of the selected natural fibres which are palm kernel fibre (PKF), Kevlar and wood. For the design of the brake pad, it is referring to the Perodua Myvi 2018 edition. The 3D model is design by using Autodesk Inventor and imported to Ansys FE simulation software for the simulation part to determine mechanical properties and thermal properties of the materials. The palm kernel fibre (PKF) is found to be the most suitable material to replace the asbestos material among the other natural fibres. [ABSTRACT FROM AUTHOR]

The growing environmental concerns and consumer awareness of eco-friendly products have increased the importance of natural fibre. Natural fibres can be described as a fibre that obtained from natural sources such as animals and plants. Natural fibres are categorized as an environmental friendly material, which contains good properties compared to synthetic fibres. Hence, the increasing trend for company to develop products based on the natural resources in order to fulfil demands from customer. This study presents the investigation of the mechanical properties of pineapple leaf fibre and jute fibre in terms of their flexural and tensile strength by using simulation method. It is important to find out the mechanical properties of this natural fibre reinforced composite materials in order to compare if it will make better packaging bag that can be used for SME industries compared to existing plastic bags. ANSYS R1 2021 student version software had been used to run the simulation. For the flexural test specimen, the sample shaped is based on the rectangular bar shaped whereas for the tensile test, dog-bone shaped is used. The results shows that each fibre have different flexural and tensile strength. Pineapple leaf fibre (PALF) is found to have the highest flexural and tensile strength in comparison with jute fibre and Polyethylene Hence, PALF is the most suitable fibre to be used as packaging material. [ABSTRACT FROM AUTHOR]

Natural fibre reinforce polymer composite is gaining attention from researchers worldwide due to its potential as a replacement for synthetic fibre. Its main properties which are environmental-friendly and lightweight make is suitable to be used in many industries such as automotive industry. However, it has low mechanical properties compared to synthetic fibre composite. Hence, to improve its mechanical properties, researchers started to hybridised natural fibre which has proven that this method maximise the mechanical properties of natural fibre composite. This paper investigated the mechanical properties of hybrid pineapple/kenaf fibre reinforced polymer composite with three different fibre loading which are, 3%, 6% and 9%. The method of fabrication is solvent casting method and the matrix used is epoxy resin. The results obtained shows that, for impact strength and hardness, higher fibre loading has higher impact strength and hardness. In the other hand, for tensile test, lower fibre loading has higher tensile strength. [ABSTRACT FROM AUTHOR]

Natural fiber had recently been used as reinforcement with polymer in a composite is increasing, due to benefits. The benefits in natural fiber is the lightweight, low cost, environmentally friendly with a good specific mechanical property. However, several factors need to take into account to affecting the mechanical properties of natural fiber reinforced polymer, such as fiber fraction, fiber condition and fiber orientation. This study presents the simulation study on the mechanical properties of different natural fiber reinforced in a diagonal orientation and to compare the mechanical properties such as tensile and bending properties of Kenaf Fiber, PALF, and Ramie reinforced polymer composites. This study of mechanical properties will be investigated using ANSYS 18.1. The composites are designed in different natural fiber with fiber orientation in direction of 45° and 135° alternately in five layers. Tensile and bending test are analyze based on ASTM standard to determine the effect of stacking sequence and fiber orientation on the composites. The results show that fiber orientation have affect the mechanical properties of the composite materials. [ABSTRACT FROM AUTHOR]

Natural fibre composite (NFC) displays a rapid development in the study and innovation sector due to the increasing benefits of the material compared to other types of fibre such as synthetic fibre composites, which includes low price and low environmental impacts. These composites can be explored through various variables and can be tested through various factors such as fibre interfacial adhesion, fibre orientation and fibre strength. However, this thesis focuses only on the testing on the vertical (90°) and horizontal (0°) of fibre orientation as it is still not well investigated, yet. The main objective of this research is to investigate the performance of mechanical properties of kenaf fibre reinforced epoxy resins for 90° and 0° of fibre orientation and analyse the effect of changing the orientation on the material. For the fabrication of the material, manual preparation method has been used and several mechanical testing has been and alkali treatment of kenaf fibre prior fabrication process. For hardness test, the 90° of fibre orientation produced 31.6% higher of hardness strength than 0° of fibre orientation while for impact test, 90° of fibre orientation resulted 39.5% greater of impact energy than 0° of fibre orientation. 6% of kenaf fibre composition with 90° of fibre orientation generated the highest stress to breaks while 2% of kenaf fibre composition with 0° of fibre orientation has the lowest stress to fracture. By conducting the SEM tests, it can be seen clearly that 6% of kenaf fibre composition with 90° of fibre orientation has the smallest gap between the fibres and 2% of kenaf fibre composition with 0° of fibre orientation has the largest gap between fibres. Thus, the performance of mechanical of vertical (90°) of fibre orientation produced better performance in mechanical testing compared to horizontal (0°) of fibre orientation. [ABSTRACT FROM AUTHOR]

Modern vehicles require good performance of braking system as well as having a safe environment of the surrounding. The use of asbestos as conventional brake pad has been causing harmful effects to the environment due to its dust that has been released by the frictional contact between the disc rotor and the brake pad during braking. Alternative materials to replace asbestos as conventional brake pad have been conducted over recent years for a safer environment and better braking performance of the modern vehicles. As a method to test the potential of alternative materials, modern simulation software has been put to use. This study focuses the use of a modelling software known as PTC Creo Parametric and a simulation software known as ANSYS to test the properties of natural fibres, which are kenaf, coconut, palm and asbestos, to determine the potential of replacing asbestos as conventional brake pad. The materials considered for this thesis are kenaf, coconut, palm and asbestos. Factors that affect the material potentials have been taken into consideration which includes design of disc rotor and brake pad, material properties and thermal and mechanical effects. Technical setup has been obeyed to conduct the simulation task. In conclusion, the factors stated do affect the braking material potentials and kenaf is the most suitable material to replace asbestos as conventional brake pad among all materials stated. [ABSTRACT FROM AUTHOR]

In the past decades, the extensive studies had been accomplished on the natural fibre reinforced polymer composites (NFPC) and are still continuous until today. The composites made of natural fibre and polymer has proven the better effectiveness in high impact fatigue strength and toughness. The increases of fibre loading give higher results fundamental in strength due to its high interfacial bonding between the fibre. In the present work, experimental tests were carried out to study the mechanical properties; tensile, hardness and impact and morphological characterization: Scanning Electron Microscope (SEM) of the NFPC. The composites fabricated are between the Kenaf fibre and epoxy resin. The Kenaf fibre reinforced epoxy resin composites were fabricated using hand layup technique by layering the arranged fibre with polymer in the mould with different angle orientation (22.5° and 67.5°) as the main parameter observed and the fibre composition (2%, 4% and 6%). Before the fabrication started, the fibre had undergone the alkali treatment for the effective surface modification that can enhance the interfacial bonding between the fibre. [ABSTRACT FROM AUTHOR]

Natural fibre composition is one of the excellent alternative for the most extensively utilized fibre in the composite revolution such as covers; vehicle door’s panel and automobile roofs. Renewable, low cost and also decomposable (biodegradable) are some of benefits natural fibre composites. In latest years, a lot of researchers involved in natural fibre project to reinforced polymer. This study was done using kenaf fibres and polyurethane (PU) as the polymer. Composites have been organized the usage of the three unique percentages of composites 2%, 4% and 6% of kenaf fibre. The hardened composites were cured for 24 hours earlier than it was once shaped in accordance to precise dimensions. Mechanical tests were performed on the samples to study the behavior. In addition, the morphology of the materials were observed using scanning electron microscope (SEM) Result found that the 6% of kenaf fibre has the highest hardness value, tensile as well as impact strength. It could be seen using SEM that 6% fiber loading showed lesser void and superior interfacial bonding between the fiber and polymer matrix. [ABSTRACT FROM AUTHOR]