The general shape of the engineering stress strain curve fig.
Ceramic vs metal stress strain curve.
And finally analogous to ceramics are the stiff fibers and rigid plastics.
Occurs when noticeable necking starts ceramics.
The engineering stress strain curve does not give a true indication of the deformation characteristics of a metal because it is based entirely on the original dimensions of the specimen and these dimensions change continuously during the testing used to generate the data.
Derived from axially loading an object and plotting the stress verses strain curve.
1 metals al alloy stress strain curve.
The first two are strength parameters.
Elastomers are the ones that strains more w a lower stress.
With a very short elastic region but highly capable of supporting huge stresses.
Stress vs strain curve.
Represents straightening of the crimped ligament fibrils.
Occurs when polymer backbones are aligned and about to break σ y engineering typical response of a metal ts stress engineering strain.
The parameters which are used to describe the stress strain curve of a metal are the tensile strength yield strength or yield point percent elongation and reduction of area.
1 requires further explanation.
2 stress strain curve for ceramics.
The last two indicate ductility.
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.