Tensile Testing:
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STRENGTH - the greatest stress
that the material can withstand prior to failure.
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DUCTILITY - a material property
that allows it to undergo considerable plastic
deformation under a load before failure.
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ELASTICITY - a material property
that allows it to retain its original dimensions after
removal of a deforming load.
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STIFFNESS - a material property
that allows a material to withstand high stress without
great strain
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Necking:
The localized decrease in diameter in a specimen
near the rupture point.
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Elastic Deformation Region:
The area of a stress - strain curve where the
specimen will deform under load, yet return to its
original shape when the load is removed.
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Plastic Deformation:
Deformation that occurs once the object has been
stressed past its elastic limit. The deformation is
no longer reversible
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