Mechanical properties 1

Question 1

Mechanical properties : how a material responds ?

Answer 1

• To an applied force, include strength and ductility
• To a sudden, intense blow (impact)
• To a continually cycled through an alternating force (fatigue)
• To a high temperatures (creep)
• To an abrasive conditions (wear)

Question 2

there is 6 mechanical properties

Answer 2

• Toughness
• Ductility
• Hardness
• Fatigue
• Brittleness
• Elasticity

Question 3

what is physical properties, chemical properties, thermal property ?

Answer 3

• Physical Properties
  
  • Ductile
  • Density
  • Hardness
  • Chemical Properties :
  • Flamabble
  • Radioactive
  • Toxic
  • Thermal Propeties
  • Melting point
  • Boiling point
    
    • Heat capacity

Question 4

what is tentile stress and its properties

Answer 4

Tensile stress measures the resistance of a material to a static or slowly applied force.
Its testing :
- Strength
- Ductility
- Toughness
- Elastic Modulus
Strain Hardening

Question 5

whats the use or stress strain diagram

Answer 5

• Tensile strength : The stress that corresponds to the maximum load in a tensile test
• Ductility : The ability of material to be permanently deformed without breaking when force is applied
• Modulus of Elasticity : Young’s modulus, or the slope of the stress strain curve
• Toughness : A qualitative measure of the impact properties of a material. A material that resists failure by impact is said to be tough
• Stress-strain diagram : To visually display the material’s deformation in response to a tensile load.

Question 6

What is yield strength

Answer 6

Yield strength is a level of stress needed to initiate plastic deformation.

Question 7

What is ultimate tensile strength and engineering stress fracture known as ?

Answer 7

Ultimate tensile strength is the stress obtained at the highest applied force, which is the maximum stress on the engineering stress strain curve. The engineering stress fracture is known as breaking or fracture stress.