Stress Strain Curve Of Metals Ceramics And Polymers

In reality not all stress strain curves perfectly resemble the one shown in strain figure 6 2.

Stress strain curve of metals ceramics and polymers. Elastic energy ductile fracture. Elasticity ductility and tensile strength those four materials can be simplified by these definitions. Approximate by the area under the stress strain curve brittle fracture. It makes them dense and eventuall.

Stress strain curve is the plot of stress and strain of a material or metal on the graph. Metals and its alloys contain atoms that are arranged in orderly manner. Stress strain curves for two brittle materials. While some of the stress strain curves for polymers might look similar to ones for metals polymers are mechanically different than metals or ceramics.

The linear portion of the curve is the elastic region and the slope is the modulus of elasticity or young s modulus. Low carbon steel generally exhibits a very linear stress strain relationship up to a well defined yield point fig 1. Many ductile materials including some metals polymers and ceramics exhibit a yield point. A typical stress strain curve would look like figure 6 2strain curve.

Metallic bonding is great for this sort of re bonding which is why metals are usually ductile. A highly elastic polymer may stretch over 10 times the original length before breaking while a metal might elastically stretch 10 of the original length elastically and may stretch plastically to double the original length before reaching its fracture point. In this the stress is plotted on the y axis and its corresponding strain on the x axis. Based on the mentioned properties.

Difference between metals ceramics and polymers with respect to modulus and tensile strengths the modulus values for highly elastic polymeric materials are lower than those of metals. The stress shown in is an example of a textfigure 6 2 book stress strain curve. After plotting the stress and its corresponding strain on the graph we get a curve and this curve is called stress strain curve or stress strain diagram. Plasticity happens when the atoms slip when they break bonds and reform new ones.

Primarily differences are due to their different chemical bonding properties homework 1. This stress curve is typical for ductile metallic elements. Elastic plastic energy very small toughness unreinforced polymers engineering tensile strain ε engineering tensile stress σ small toughness ceramics large toughness metals adapted from fig. Stress strain curves for metals ceramics and polymers objective we are interested about studying and comparing stress strain curves of metals ceramics and polymers.