which help u to improve your basic knowledge about material properties & testing of material

1. Parul Institute Of Engineering &
Technology
Subject: Design of Machine Elements

2. MEMBER
KANADE MANISH(14037113122)
Topic: Stress Strain Diagram
&
Mechanical Properties
GUIDE
SANJEEV SIR

3. List of the Figure
1. Stress Strain Diagram for Ductile Material
2. Example Of Elastic Material
3. Example Of Plastic Material
4. Example Of Ductile Material
5. Example Of Brittle Material
6. Modulus Of Resilience
7. Modulus of Toughness
8. Stress Vs Strain Diagram For Creep Test

4. Stress Strain Diagram
Figure 1 : Stress strain diagram for ductile material

5. • PROPORTIONAL LIMIT : It is the maximum
stress at which the stress is proportional to
strain and above this limit the plastic
deformation of a material occurs.
• That is nothing but the hooks law.
Which is given as,
stress / strain = a constant
• Here the constant is known as the Modulus
of elasticity .

6. • Elastic limit : even if material is stressed beyond
the proportional limit , it can regain its original
shape and size. That is called elastic limit.
• Yield limit : it stress applied beyond elastic limit
then plastic deformation takes place. For ductile
material two yield point is obtained that is
denoted by the Y1&Y2.
• Ultimate point : maximum value of the stress
which is applied beyond the yield point .
• Fracture point : The value of the stress for which
material starting to fracture or breaking.

7. Material Properties
1) Elasticity : It is the property of the material
by which it can regain its original shape &
size when applied load is removed.
2) Plasticity : The property which enables the
material to regain its original shape & size
when applied load is removed.
3) Stiffness : Ability of the material to resist the
deformation under the load.

8. Figure 2: Elastic Material
Figure 3: Plastic Material

9. 4 ) Ductility : Ability of the material to deform under
the load condition.
measured in percentage of elongation or
reduction in cross section,
5) Brittleness : Ability of the material to fail
without the deformation.
less than 5% elongation is considered as a brittle
material.
6) Malleability : property which allow material to
deform without rupture.
it is considered when compressive load is
applied.

10. Figure 4: Ductile material
Figure 5: Brittle Material

11. 7) Resilience : Ability of the to absorb the energy
within elastic limit.
Figure 6: Modulus Of Resilience

12. 8) Toughness : Ability of the material to absorb
the energy without fracture.
Figure 7: Modulus Of Toughness

13. 9) Creep : The progressive deformation of the material
under continue and loading at a high temperature.
Figure 8: Stress Vs Time Diagram For Creep test

14. Reference
• Design of Machine Element by
Prof. V. B. Bhandari sir