Elastic Moduli
Chapter Name : Mechanical Properties Of Solids |
Sub Topic Code : 101_11_09_06_02 |
Topic Name : Elastic Moduli |
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Sub Topic Name : Young's Modulus |
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Introduction
Young’s Modulus is
the ratio between tensile stress and longitudinal strain.
Pre-Requisites:
Elasticity,
Compressibility, Stress and Strain, Elastic Moduli, Young’s Modulus
Activity:
Real Life Question:
Is there any
relationship between tensile stress and longitudinal strain?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Stress | A deforming force on a body causes a restoring force from the body. This restoring force per unit area is stress. |
| Strain | When there is a strain, there ought to be some change in dimension of the body. The change in dimension by original dimension is called stress. |
| Elastic Moduli | Ratio between stress and strain on a material. |
| Young’s modulus | The ratio between tensile stress and longitudinal strain |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|
Real life uses :
The Young’s modulus of a material is important
to know where that material can and should be used.
Places to visit :
Practical examples around us
| Examples | Explainations |
|---|---|
| Steel | Because of its high Young’s Modulus, Steel is used in heavy duty machines. |
What you learn in Theory:
The ratio between
tensile stress and longitudinal strain is Young’s Modulus
What you learn in Practice:
The greater the
Young’s modulus of a material, greater is its elasticity.