Notes - Mechanical Properties of Solids Class 11 Notes | EduRev

Class 11 : Notes - Mechanical Properties of Solids Class 11 Notes | EduRev

 Page 1


1 
 
Chapter 7: ? ?? ?(Mechanical Properties)  
 
• Tensile & Hardness Testing; 
• Macroscopic Behavior; 
• Elastic Deformation; 
• Elastic Modulus; 
• Proportional Limit;  
• Poisson's Ratio; 
• Plastic deformation; 
• Yielding and Yielding Strength;  
• Tensile Strength; 
• Fracture Strength; 
• Ductility;  
• Resilience;  
• Toughness 
• Property Variability; 
• Design Safety Factors. 
 
Page 2


1 
 
Chapter 7: ? ?? ?(Mechanical Properties)  
 
• Tensile & Hardness Testing; 
• Macroscopic Behavior; 
• Elastic Deformation; 
• Elastic Modulus; 
• Proportional Limit;  
• Poisson's Ratio; 
• Plastic deformation; 
• Yielding and Yielding Strength;  
• Tensile Strength; 
• Fracture Strength; 
• Ductility;  
• Resilience;  
• Toughness 
• Property Variability; 
• Design Safety Factors. 
 
c07f01 
7.2 ?????(Stress and Strain)??? 
Page 3


1 
 
Chapter 7: ? ?? ?(Mechanical Properties)  
 
• Tensile & Hardness Testing; 
• Macroscopic Behavior; 
• Elastic Deformation; 
• Elastic Modulus; 
• Proportional Limit;  
• Poisson's Ratio; 
• Plastic deformation; 
• Yielding and Yielding Strength;  
• Tensile Strength; 
• Fracture Strength; 
• Ductility;  
• Resilience;  
• Toughness 
• Property Variability; 
• Design Safety Factors. 
 
c07f01 
7.2 ?????(Stress and Strain)??? 
c07f03 
? ??? 
Page 4


1 
 
Chapter 7: ? ?? ?(Mechanical Properties)  
 
• Tensile & Hardness Testing; 
• Macroscopic Behavior; 
• Elastic Deformation; 
• Elastic Modulus; 
• Proportional Limit;  
• Poisson's Ratio; 
• Plastic deformation; 
• Yielding and Yielding Strength;  
• Tensile Strength; 
• Fracture Strength; 
• Ductility;  
• Resilience;  
• Toughness 
• Property Variability; 
• Design Safety Factors. 
 
c07f01 
7.2 ?????(Stress and Strain)??? 
c07f03 
? ??? 
4 
•  Simple tension:  cable 
Note:  R × t ×A
c
= M here. 
Common States of Stress 
o 
s 
= 
F 
A 
o 
t 
= 
F 
s 
A 
s s 
M 
M 
A 
o 
2R 
F 
s 
A 
c 
•  Torsion (a form of shear):  drive shaft 
A 
o 
 = cross sectional  
area (when unloaded) 
F F 
Page 5


1 
 
Chapter 7: ? ?? ?(Mechanical Properties)  
 
• Tensile & Hardness Testing; 
• Macroscopic Behavior; 
• Elastic Deformation; 
• Elastic Modulus; 
• Proportional Limit;  
• Poisson's Ratio; 
• Plastic deformation; 
• Yielding and Yielding Strength;  
• Tensile Strength; 
• Fracture Strength; 
• Ductility;  
• Resilience;  
• Toughness 
• Property Variability; 
• Design Safety Factors. 
 
c07f01 
7.2 ?????(Stress and Strain)??? 
c07f03 
? ??? 
4 
•  Simple tension:  cable 
Note:  R × t ×A
c
= M here. 
Common States of Stress 
o 
s 
= 
F 
A 
o 
t 
= 
F 
s 
A 
s s 
M 
M 
A 
o 
2R 
F 
s 
A 
c 
•  Torsion (a form of shear):  drive shaft 
A 
o 
 = cross sectional  
area (when unloaded) 
F F 
5 
(photo courtesy P.M. Anderson) 
Canyon Bridge, Los Alamos, NM 
o 
s = 
F 
A 
•  Simple compression: 
Note:  compressive 
structure member 
(s < 0 here). 
(photo courtesy P.M. Anderson) 
OTHER COMMON STRESS STATES (i) 
A 
o 
Balanced Rock, Arches  
National Park 
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