Chapter 2 DQV 10082 Revision

The figure shown...........test

• Compression

• Tensile

• Flexural

• Hardness

The definition of stress is......

• Applied force or system of forces that tends to deform a body

• The amount of deformation in the direction of the applied force divided by the initial length of the material

• Mass per unit volume

• Amount of load to strengthen the material

The amount of deformation in the direction of the applied force

divided by the initial length of the material. This is refers to....

• Stress

• Strain

Figure above shown the type of load for different mechanical test. Namely test A, B,C,D and E

• A: Flexural test

  B: Tensile test

  C: Compression test

  D: Torsion test

  E: Shear test

• A: Shear test

  B: Torsion test

  C: Tensile test

  D: Compression test

  E: Flexural test

• A: Tensile test

  B: Compression test

  C: Torsion test

  D: Shear test

  E: Bending test

• A: Compression test

  B: Tensile test

  C: Flexural test

  D:Torsion test

  E: Shear test

Figure below shown Stress-Strain curve. Namely A,B and C

• A: Yield strength

  B: Ultimate strength

  C: Fracture

• A: Ultimate strength

  B:Yield strength

  C:Fracture

• A: Yield strength

  B:Fracture

  C: Ultimate strength

• A:Fracture

  B: Yield strength

  C: Ultimate strength

There are two types of deformation; elastic deformation & plastic deformation

• True

• False

Deformation is ...........

•  A change in the shape or size of an object due to an applied force or a change in temperature

• A change of color due to long life span

• A change of density because of mass change

• A change of dimension because of duration of use

This type of deformation is reversible

Once the forces are no longer applied the object returns to its original shape

This is refers to...

• Elastic deformation

• Plastic deformation

Plastic deformation is....

• This type of deformation is reversible

  Once the forces are no longer applied the object returns to its original shape

• This type of deformation is irreversible

  When force is removed it sufficiently permanent new shape

• This type of deformation is reversible. When the force removed, the shape remain

• This type of deformation is irreversible. The object return to its original shape when force release

 The mechanical properties of material reflect the relationship between

its response and deformation to an applied load or forces.

• True

• False