Question

Which of the following is a characterization technique used to measure Young's modulus of a biomaterial?

• A. ( \text{Tensile test} ) \
• B. ( \text{Compression test} ) \
• C. ( \text{Three- and four-point bend test} ) \
• D. ( \text{Calculation from the stress-strain curve} ) \

Hint:

Young's modulus is a fundamental mechanical property, and its determination always involves analyzing the material's response to applied force (stress) in terms of its deformation (strain). The stress-strain curve is the graphical representation of this relationship, and the modulus is derived directly from it.

Answer 1

The Correct Option is D

Young's modulus (E), also known as the modulus of elasticity, is a measure of the stiffness of a material.
It describes the material's resistance to elastic deformation under load.
Tensile, compression, and three- or four-point bend tests are all experimental methods used to obtain the stress-strain curve for a material.
Once the stress-strain curve is obtained from any of these tests, Young's modulus is calculated from the slope of the linear (elastic) portion of this curve.
Therefore, while the tests (tensile, compression, bend) are used to generate the necessary data, the actual measurement of Young's modulus is a calculation derived from the stress-strain curve.
Option (D) encompasses the conceptual basis for determining Young's modulus from the results of any of these mechanical tests.