Stress Strain Curve Metal Ceramic Polymer

Tensile tests of brittle ceramics are usually not performed.

Stress strain curve metal ceramic polymer. Analysis of strain and stress in ceramic polymer and metal matrix composites by raman spectroscopy colomban 2002 advanced engineering materials wiley online library. 1 sketch and explain difference among typical metal ceramic and polymer behavior through stress strain diagram sketch and explain difference among typical metal ceramic and polymer behavior through stress strain diagram. With the sample geometry a stress strain curve can then be generated from the recorded load and displacement. 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.

Seven edition home work 6 for chapter 6 please sovle the. Terminal failure is usually characterized as either brittle or ductile referring to the appearance of the failure surface which is either smooth and sharp or rough and highly deformed. In engineering and materials science a stress strain curve for a material gives the relationship between stress and strain it is obtained by gradually applying load to a test coupon and measuring the deformation from which the stress and strain can be determined see tensile testing these curves reveal many of the properties of a material such as the young s modulus the yield strength. Derived from axially loading an object and plotting the stress verses strain curve.

1 metals al alloy stress strain curve. A typical stress strain profile for a ductile metal resembles the following. Stress strain curve is the plot of stress and strain of a material or metal on the graph. Elastomers are the ones that strains more w a lower stress.

The zone where a material will return to its original shape for a given amount of stress toe region applies to a ligaments stress strain curve. 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. Represents straightening of the crimped ligament fibrils. While some of the stress strain curves for polymers might look similar to ones for metals polymers are mechanically different than metals or ceramics.

It is difficult to shape these materials into the proper test structure difficult to grab the brittle material without breaking it and it is difficult to align the test samples to avoid bending stresses. 2 stress strain curve for ceramics. In this the stress is plotted on the y axis and its corresponding strain on the x axis. With a very short elastic region but highly capable of supporting huge stresses.

1 2 typical stress strain curve of a ductile metal2 the material initially behaves in a linear elastic manner. Text book the science and engineering of materials askeland et al. Stress vs strain curve. And finally analogous to ceramics are the stiff fibers and rigid plastics.

Stress strain curves for two brittle materials.