materials properties of their own, the material composed is known as Composite Material. The different systems of the elements are combined together to achieve a system which is more useful and more functional than any of the constituent alone. Composite materials are becoming more and more important to today’s material due to the advantages it brings to us. Some clear evidence of the advantages of composite materials is that composite materials are low in weight, resistant against corrosion, has high
fiber to fiber (Rowell et al., 2000; Nevell and Zeronian, 1985; Goda et al., 2009). Cellulose has a large number of hydroxyl groups that gives a hydrophilic character to jute fiber which is responsible for its poor compatibility with hydrophobic polymer matrices and also for its dimensional instability. These hydroxyl groups make the fibers more reactive toward the different surface modifiers. The nature of cellulose and its crystallinity determine the reinforcing efficiency of jute fiber. Being
Natural fibers represent environmentally friendly alternatives to conventional reinforcing fibers (glass, carbon, kevlar). Advantages of natural fibers over traditional ones are low cost, high toughness, low density, good specific strength properties, reduced tool wear (nonabrasive to processing equipment), enhanced energy recovery, CO2 neutral when burned, biodegradability. Because of their hollow and cellular nature, natural fibers perform as acoustic and thermal insulators and exhibit reduced
A composite is a combination of two
fibres during production. • No off-gassing of toxic compounds (in contrast to phenol resin bonded wood and recycled Cotton fibre parts) and reduced fogging behavior. • Price advantages both for the fibres and the applied technologies. 1.3.3. Advantages of Natural Fibre Composites The main advantages of natural fibre composite are: 1. Low specific weight, resulting in a higher specific strength and stiffness than glass fibre. 2. It is a renewable source of energy which gives out oxygen using carbon
Self-healing materials are no more an illusion and we are not far away from the days when manmade materials can restore their structural integrity in case of a failure. For example, the cracks in buildings can close on their own or the scratches on car bodies can recover their original shiny appearance by itself. Indeed, this is what everyone can see in case of the natural healing of wounds and cuts in living species. In the case of structural materials the long-time degradation process leads to
1.1.1.4 Reverse osmosis (RO): Reverse osmosis is another pressure driven process which uses thin-film composite membranes. RO uses higher pressure than other processes (200-1200 psi) to force the feed solution through a semi-permeable membrane with the smallest pore size (0.0005-0.002 nm). RO membranes are the tightest of all the membranes and allow only water to pass through it while rejecting almost everything. It can reject all dissolved and suspended solids and even the monovalent ions from the
And it is also a major synthetic material for textile as well as composite industry. A important quality of PP is its capability that it is used in wide fibrous forms. Various applications like automobiles, medical as well as geo textiles are summarized [1]. Creep resistance is improved by making the material light, by
with carbon black.11 First report on significant advantages of using nanoclay in SBR compounds is by Gopi et al.12 who have demonstrated that partial replacement of carbon black by organoclay in a typical tire tread formulation imparts better rolling resistance, and reduces heat build up. This is perhaps the first case of hybrid filler based SBR nanocomposite. A similar report by Dong et al.13 on MWCNT/ carbon black system highlights the advantages of such hybrid fillers over single fillers in respect
Q1. What is Lean Manufacturing? Answer: Toyota Production System (TPS) is a model of lean manufacturing. A lean manufacturing system replicates the design with minimal waste. It Involves improved relationships with parts suppliers through Keiretsu (groups of manufacturers, suppliers, and distributors) Goals: • To eliminate waste! (muda) • Waste is anything the customer is not willing to pay for (does not add value to the product) • To reduce the number of parts warehoused by a plant for immediate