Carbon Fiber As A Chemical Compound

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

However, the absence of plastic deformation does not mean that composites are brittle materials like monolithic ceramics. The heterogeneous nature of composites result in complex failure mechanisms which impart toughness. Fiber-reinforced materials have been found to produce durable, reliable structural components in countless applications. The unique characteristic of composite materials, especially anisotropy, require the use of special design

2a) Many characteristics allows carbon to be the base of biological molecules. Due to the four valance electrons carbon can bond with up to four other electrons in covalent bonds. This allows carbon to become the central point for many macromolecules. Carbon is also relatively small in size and is readily available on Earth. Carbon can also bin to other carbon atoms and can make single, double, or triple bonds. Due to this, long strings of carbon atoms can be created with seemingly no limit. The carbon-carbon bonds easily allow similar macromolecules with different functional groups. The shape of carbon-based macromolecules also easily vary. Shapes such as chains, rings, and branches are commonplace. With variance of shape, carbon can be the base for isomers; molecules with the same formula but different structures. Carbon is the only element on the periodic table that uniquely has all these characteristics.

Some examples of compounds formed by carbon include diamonds which are pure carbon and are the hardest substance known to man with no known other material that can cut them. Graphite which is also a pure carbon-based molecule can be found in your pencil as lead. The oil in our cars is made of carbon, and the plastic of your keypad is carbon-based. Additionally, Carbon nanotubes which can self assemble and provide not only incredible strength, but also electrical, optical, thermal and kinetic properties like no other materials (The Biochemical Essense of Life: Carbon, n.d.). Another key feature of carbon is that its bonds are strong enough to resist environmental stresses, but weak enough to be manipulated by our bodies with enzymes which is a requirement of any organism’s metabolism (The Biochemical Essense of Life: Carbon, n.d.).

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

In conclusion ot the experiment of testing if more carbon in synthetic polymers caused for the polymers to be stronger, the tests proved that more carbon does keep the materials strong. The different tests showed how the different types of synthetic polymers had different amounts of resistance. The more grams led to the more of an effect to the synthetic poklymers being streched out.

1) Of all the sample materials tested during the lab, the AISI-1020 Cold Rolled Steel was found to be the strongest. Moreover, between the two samples of AISI-1020 Cold Rolled steel, the sample without the neck was found to be stronger. This was observed by calculating the ultimate tensile strength for all the samples used during the experiment. As a result, the higher the ultimate tensile stress the material endured, the stronger the material was. The ultimate tensile stress calculated for the AISI-1020 Cold Rolled was 563 MPa which was the highest of all. Therefore, concluding that the AISI-1020 Cold Rolled without a neck region was the strongest material.

Carbon fiber in all aspects is a material consisting of thin fibers of nearly pure carbon made by subjecting various organic raw materials to high temperatures, combined with asynthetic resins to produce a strong, lightweight material use in construction of aircraft and spacecraft (dictionary 2016). This composite material dates back to the 1950s where the tensile strength of carbon fiber was discovered and put into work. 50 years later carbon fiber is still well used and in great demand as the benefits of it proved to be great for the race car industry. The purpose of this project is to examine the mechanical properties of carbon fiber, and the benefits that it provides to the race car industry as well as predicting what other applications will occur in the

Several mechanical tests have to be applied for measuring static and dynamic properties of materials and most of them involve applying a force to the material and measuring its displacement. Through these tests, measuring the stress applied and the resulting strain, it is possible to calculate material properties such as the Young modulus, the physical parameter corresponding to the material stiffness.

From the stress-strain curve of the tensile test, the values which can be found are Modulus of Elasticity, Yield Strength, the Tensile Strength, Percentage of Elongation and the Reduction in Area. Also the Toughness, Resilience, Poisson’s ratio can be found by using the tensile test.

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

materials. In the last decades, the use of natural fibers as reinforcement in polymeric composites for technical application has been a research subject of scientist. Interest in natural fibers has increased worldwide due to their low cost, low density, hardness, higher fatigue endurance, good thermal and mechanical resistivity and to their environmental friendliness. The Asian markets have been

Natural fibers represent environmentally friendly alternatives to conventional reinforcing fibers (glass, carbon, kevlar). Because of their hollow and cellular nature, natural fibers perform as acoustic and thermal insulators and exhibit reduced bulk density [33, 34]. Some of the disadvantages and limitations of natural fibers, when used as reinforcement for composites, are related to the lack of proper interfacial adhesion, poor resistance to moisture absorption, limited processing temperature to about 200°C, and low dimensional stability (shrinkage, swelling). Researches are being done to improve these properties and are implemented continuously [35, 36]. The fiber surface heterogeneities such as surface defects, impurities, surface flaws, etc. affect the mechanical properties of the composites remarkably. Modification of fiber surface is generally used in order to reduce the surface defects, improve the adhesion between the fiber and the matrix, and hence the mechanical properties of the composites [37].

As mentioned above, composite materials are now being used in a wide range in the Aircraft Industry. They have now allowed the engineers to design and overcome difficult

Composition of fibres reinforced composite the fibres are important class of reinforcement, as they satisfy the desired conditions and transfer strength to the matrix constituent influencing and enhancing their properties as desire.