Strength To Weight Ratio Of Carbon Ceramic

As shown in fig.

Strength to weight ratio of carbon ceramic.

13 14 the percentage usage of composite materials in aircraft industry which replace metallic alloys is continuously increased exact numbers are not available but estimates are that 50 60 of the material used in the new. The si unit for specific strength is pa m 3 kg or n m kg which is dimensionally equivalent to m 2 s 2. Materials such as aluminium titanium magnesium carbon and glass fiber high strength steel alloys all have good strength to weight ratios. Strength of a material is the force per unit area at failure divided by its density.

Now with advances in plastic composites and the addition of carbon fiber or other glass fibers to plastic material formulations. Kevlar aramid and carbon fibers have a high strength to weight ratio when tested unidirectionally in direction of the fibers while e glass has a lower strength to weight ratio. Glass is still quite high just not as good as kevlar or carbon. A material s strength to weight ratio also called its specific strength is a comparison of its strength in relation to how much it weighs.

Engineers designers and specifiers are increasingly seeking materials with a high specific strength. The high cost of carbon fiber is mitigated by the material s unsurpassed strength to weight ratio and low weight is essential for high performance automobile racing. The units are kn m kg. Strength of a material is the force per unit area at failure divided by its density.

Composites have superior high strength to weight ratio and resistance to corrosion and fatigue and are widely used in strength demanding applications. Race car manufacturers have also developed methods to give carbon fiber pieces strength in a certain direction making it strong in a load bearing direction but weak in. The specific strength is a material s strength force per unit area at failure divided by its density it is also known as the strength to weight ratio or strength weight ratio or strength to mass ratio in fiber or textile applications tenacity is the usual measure of specific strength. Materials such as aluminium titanium magnesium carbon and glass fiber high strength steel alloys all have good strength to weight ratios.

In the past one of the biggest roadblocks to replacing metal parts with plastic was that plastic while much lighter could not compete with the strength characteristics of metal. Carbon fiber is very rigid. Any material that is strong and light has a favourable strength weight ratio. The strength of a material divided by its density will give you the specific strength.