Question

Based on the stress-strain curves of three different materials (X, Y, and Z) shown in the figure, which one of the following choices is CORRECT?

• A. X – Titanium, Y – Hydroxyapatite, Z – Polyethylene
• B. X – Hydroxyapatite, Y – Titanium, Z – Polyethylene
• C. X – Hydroxyapatite, Y – Polyethylene, Z – Titanium
• D. X – Polyethylene, Y – Titanium, Z – Hydroxyapatite

Hint:

In materials science, stress-strain curves can help identify material properties such as strength, ductility, and flexibility. A sharp peak typically indicates brittleness, while a more gradual curve indicates ductility or flexibility.

Answer 1

The Correct Option is B

Looking at the stress-strain curves for each material:
- Material X has the steepest slope and a sharp peak, indicating high strength and brittleness. This is typical for Titanium, a strong but brittle material.
- Material Y has a moderate curve, showing a ductile material with a lower yield strength than X. This corresponds to Hydroxyapatite, which is known for its ability to deform under stress and is commonly used in bone implants.
- Material Z shows a more gradual curve and a large strain region, indicating a flexible material with low strength. This behavior is typical of Polyethylene, a polymer known for its flexibility and lower tensile strength.
Thus, the correct identification is:
- X – Titanium
- Y – Hydroxyapatite
- Z – Polyethylene