Question

distinguish between plasticity and elasticity with examples

Answer 1

Inphysicsandmaterials science,plasticitydescribes thedeformationof a (solid) material undergoing non-reversible changes of shape in response to applied forces.[1][2]For example, a solid piece of metal being bent or pounded into a new shape displays plasticity as permanent changes occur within the material itself. In engineering, the transition fromelasticbehavior to plastic behavior is calledyield.Plastic deformation is observed in most materials, particularlymetals,soils,rocks,concrete,foams,boneandskin.[3][4][5][6][7][8]However, the physical mechanisms that cause plastic deformation can vary widely. At acrystallinescale, plasticity in metals is usually a consequence ofdislocations. Such defects are relatively rare in most crystalline materials, but are numerous in some and part of their crystal structure; in such cases,plastic crystallinitycan result. In brittle materials such as rock, concrete and bone, plasticity is caused predominantly byslipatmicrocracks. In cellular materials such as liquidfoamsorbiological tissues, plasticity is mainly a consequence of bubble or cell rearrangements, notablyT1 processes.

Answer 2

elasticity is defined as the property which enables a material to get back to its original shape after the removal of applied force
for example :-a rubber band which can be stretched easily

plasticity is defined as the property which enables a material to be deformed continuously and permanently without raptured during the application of force .this deformation determines the viscous behavior of the material and is irrecoverable.

for example a metallic cylinder which is stretched along its cross-sections which force F

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