1 metals al alloy stress strain curve.
Ceramic vs metal stress strain curve.
2 stress strain curve for ceramics.
Represents straightening of the crimped ligament fibrils.
Elastomers are the ones that strains more w a lower stress.
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.
With a very short elastic region but highly capable of supporting huge stresses.
Occurs when polymer backbones are aligned and about to break σ y engineering typical response of a metal ts stress engineering strain.
Occurs when noticeable necking starts ceramics.
The first two are strength parameters.
The general shape of the engineering stress strain curve fig.
Stress vs strain curve.
And finally analogous to ceramics are the stiff fibers and rigid plastics.
1 requires further explanation.
The stress at the maximum on the engineering stress strain curve metals.
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.
Occurs when crack propagation starts polymers.
The last two indicate ductility.