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Mechanical Behavior of Materials [ Question No: 1 To 2 ] :
A material that undergoes large plastic deformations before breaking is considered:
If a material returns to its original shape and size after removal of the external force, it is said to possess:
Total number of questions : 2
Number of answered questions : 0
Number of unanswered questions : 2
Mechanical Behavior of Materials [ Question No: 1 To 2 ] :
A material that undergoes large plastic deformations before breaking is considered:
Your Answer : (Not Answered)
Correct Answer : A
A material that undergoes large plastic deformation before breaking is ductile, like mild steel or copper, which can be drawn into wires. A brittle material breaks with little deformation, 'elastic' refers to returning to shape after the load is removed, and 'stiff' refers to a high modulus of elasticity, so none of the other three describes large plastic deformation before failure.
Ductility is measured by percentage elongation and reduction of area in a tensile test; mild steel shows about 20 to 30 percent elongation, which makes it ductile.
If a material returns to its original shape and size after removal of the external force, it is said to possess:
Your Answer : (Not Answered)
Correct Answer : A
A material that returns to its original shape and size after the external force is removed has elasticity. Malleability is the property of being hammered into sheets, plasticity is the property of keeping the deformation permanently, and rigidity is resistance to deformation, so only elasticity fits the description.
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Total number of questions : 2
Number of answered questions : 0
Number of unanswered questions : 2