Medium
What are elastomers? Plot the stress $\to$ strain curve for them and explain.
(N/A) Materials that can be stretched to cause large values of strain are called elastomers. Examples include rubber and the elastic tissues of the aorta.
Rubber can be pulled to several times its original length and still returns to its original shape.
The figure shows the stress $\to$ strain curve for the elastic tissue of the aorta,which is the large vessel carrying blood from the heart.
Key observations from the curve:
$1$. The elastic region is very large.
$2$. The material does not obey Hooke's law over most of this region.
$3$. There is no well-defined plastic region for these materials.
Rubber can be pulled to several times its original length and still returns to its original shape.
The figure shows the stress $\to$ strain curve for the elastic tissue of the aorta,which is the large vessel carrying blood from the heart.
Key observations from the curve:
$1$. The elastic region is very large.
$2$. The material does not obey Hooke's law over most of this region.
$3$. There is no well-defined plastic region for these materials.
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Similar Questions
The diagram shows the stress versus strain curve for materials $A$ and $B$. From the curves,we infer that:
The graph below represents a typical stress-strain curve for a metal. Identify the point on the graph that is the ultimate tensile strength of the material.
Assertion $(A)$: Ductile metals are used to prepare thin wires.
Reason $(R)$: In the stress-strain curve of ductile metals,the length between the points representing elastic limit and breaking point is very small.
Reason $(R)$: In the stress-strain curve of ductile metals,the length between the points representing elastic limit and breaking point is very small.
In plotting stress versus strain curves for two materials $P$ and $Q$,a student by mistake puts strain on the $y$-axis and stress on the $x$-axis as shown in the figure. Then the correct statement$(s)$ is(are):
$(A)$ $P$ has more tensile strength than $Q$
$(B)$ $P$ is more ductile than $Q$
$(C)$ $P$ is more brittle than $Q$
$(D)$ The Young's modulus of $P$ is more than that of $Q$
$(A)$ $P$ has more tensile strength than $Q$
$(B)$ $P$ is more ductile than $Q$
$(C)$ $P$ is more brittle than $Q$
$(D)$ The Young's modulus of $P$ is more than that of $Q$
MediumIIT 2015
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