Advantage And Disadvantage Of Composite Materials

In the specimens, all showed a brittle fracture due to how the stress vs strain slope looked and where the Ultimate Tensile Strength was located. Also, how the composited specimens failed look consistent that there were any defects in the specimens. The 0°/90° carbon/epoxy specimen failed in the longitudinal direction because of how the fibers were aligned in that direction. The two ±45° glass/ epoxy specimen failed in the 45-degree direction do to how the fibers were aligned in the specimens. These failures would make sense because composites fail when fiber become unconnected so the epoxy failed first and then cause the fibers to fail next. The fibers individual are weak but when are combined and form a pattern with other fibers is how the strength

For bio-composite, is a composite material formed by a “matrix” and “reinforcement” of natural fibers. These materials are often mimic the structure of the living materials involved in the process keeping the strengthening properties of

Composite is defined as a mixture of two or more substances. A composite knife is a new type of knife blade. It is two steels that are blended together to give you a blade that looks great and works even better. It is a blade that does not require you to sharpen it often. It is lightweight, slim, and easy to carry.

Composite materials have been evaluated with a matrix properties unsaturated polyester resin by conducting mechanical testing, including the pressure, compression, hardness and impact resistance.. While wood flour helped add to the balance between the original compression strength reductions up to 3 wt. wood flour and then reduce the strength. The results confirmed that the best promote and 3% by weight of wood flour consider the compression strength

Polymer Matrix Composites: Most commonly used matrix materials are polymeric. In general the mechanical properties of polymers are inadequate for many structural purposes. In particular their strength and stiffness are low compared to metals and ceramics. These difficulties are overcome by reinforcing other materials with polymers. Secondly the processing of polymer matrix composites need not involve high pressure and doesn’t require high temperature. Also equipments required for manufacturing polymer matrix composites are simpler. For this reason polymer matrix composites developed rapidly and soon became popular for structural

There are several advantages and disadvantages of the materials that have been discussed above. Natural fibers normally are renewable resource so that their cost is relatively low as compared with other synthetic fibers. With the consideration of environmental consciousness, natural fibers are biodegradable so as they can alleviate the problem of massive solid wastes produced and relief the pressure of landfills if they are used for replacing other non-degradable materials for product development. Besides, according to their inherent properties, natural fibers are flexible for processing due to their less susceptible to machine tool damage and health hazards during the manufacturing and etc. Moreover, natural fibers possess many advantages characteristics such as desirable fiber aspect ratio, low density and relatively high tensile and flexural moduli [11].

Composite materials and structures are particularly attractive for aerospace applications due to their high stiffness, high strength and low weight properties. The use of such structures allows for an overall aircraft mass reduction, reduced fuel consumption and increased service life resulting in a reduction in aircraft operating costs.

One of the modern definitions of composite materials was given after 1990 and it says that: “A modern composite material is a system formed of at least two constituents, in which the fiber volume fraction is at least 10% and in which the mechanical property values of one component are at least 5 times higher than the values of properties of the second component.” [1].

n aeroplane is acted upon by a few forces in the sky: Lift, Drag, Thrust and Weight. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil. A composite material is a material made from two or more constituent materials with differing physical or chemical properties that when joined together, produce a material with characteristics different from the individual material. The individual component remains separate and unique from the finished structure. There are a few types of currently available composite materials, and they include carbon fibre, fiber glass and fibre-reinforced matrix systems. Almost all new aircraft these days include some composite material into their designs. The most common composite material that is used in aircraft is fiberglass. Other composite materials used includes Kevlar, which is now replacing glass fibers. Composite materials had been used commonly since

Polyester is an essential synthetic compound which can be broken into poly and ester. The name "polyester" refers to the relation of numerous monomers (esters) contained by the fiber. Polyester yarns are steady, high sturdy and has good quality of moisture management properties with greater wicking. In addition, it dissipates moisture more rapidly and provides comfort to the wearer.

Look at the things around us—sunglasses, lunch boxes, ball-point pen, and many kinds of products we use every day; look at the garbage bags lie on the street, and the water bottle lies on the beach… many things around us are made of plastic. As a result, plastic is one of the most used materials in our daily lives. Admittedly plastic has some advantages; however, the disadvantages outweigh its advantages because of it is hard to decompose, wastes resources and contains toxic and harmful substances.

Lignocellulosic (plant) fiber reinforced with PLA have been extensively studied and further attracted considerably in polymer composite field [2]. High strength to weight ratio, less cost, low density, high modulus, abundant availability, good wear/abrasion resistance and its biodegradability [5] are the main advantages of lignocellulosic fiber.These properties allow them to compete with synthetic ones and it is expected to considerably lower the overall cost of materials [2]. Extensive literature survey indicate that PLA reinforced with commercially available lignocellulosic fiber such as banana, sisal, cotton, flax, ramie and

Composite materials are multiphase materials obtained through the artificial combination of different materials in order to attain properties that the individual components by themselves cannot attain. They are not multiphase materials in which the different phases are formed naturally by reactions, phase transformations, or other phenomena. An example is carbon fiber reinforced polymer. Composite materials should be distinguished from alloys, which can comprise two more components but are formed naturally through processes such as casting. Composite materials can be tailored for various properties by appropriately choosing their components, their proportions, their distributions, their morphologies, their degrees of crystallinity, their crystallographic textures, as well as the structure and composition of the interface between components. Due to this strong tailor ability, composite materials can be designed to satisfy the needs of

Composite materials are the engineering materials made from two or more constituent materials they remain separate and distinct on a macroscopic level but forming a single component or Composites can defined as materials that consist of two more chemically and physically different phases separated by a distinct interface(matrix phase and dispersed phase). The different systems are combined judiciously to achieve a component with more and more useful structural or functional properties non-attainable by any of the constituent alone. In the composites usually Matrix phase is the primary or base phase having a continuous character or continuous molecular chain. But these Matrixes are usually less hard and more ductile phase. In composites it holds the dispersed (reinforcing) phase, shares a load with it. The Dispersed phase is encapsulated in the matrix in a discontinuous form called a secondary phase. This Secondary phase is usually stronger than that of the matrix phase, so is also called as reinforcing phase.

People could get more benefits from plastic but every time people used it, they contribute in the destruction of the environment. Plastic material was made up of synthetic organic solids that are moldable. Due to plastic material relatively low cost, many manufacturers patronizing it because of expanding range of their products. Manufacturers displaced many materials that are used in the development of their products such as paper, wood, glass and water. Plastic was also used in packaging which is highly contributes in the development of the country. Even though people get benefits from plastic it has also many disadvantage. Plastic material is very harmful to health of humans and animals, it contributes in water pollution that can affect