Testing of Materials_2 (Tensile and Hardness Test)

Rockwell test utilizes ___________ a measure of hardness.

• Load

• Depth of indentation

• Diameter of indentation

• Time of loading

A minor load of _________ is applied to seat the specimen in the Rockwell test.

• 1 kg

• 5 kg

• 10 kg

• 150kg

How does the Vicker’s hardness test differ from Brinell’s?

• Duration of indentation

• Materials to be tested

• Type of indenter

• Load applied

What is the angle of indenter in Vicker’s hardness test?

• 96 degrees

• 110 degrees

• 150 degrees

• 136 degrees

The ability of the material to resist stress without failure is called

• Strength

• Hardness

• stiffness

• toughness

which material is hardest

• Aluminium

• Copper

• Steel

Name the part of the graph- G

• stress

• strain

• fracture point

• elasticity range

Unrecoverable elongation beyond the elastic limit.

• Resilience

• Yield Point

• Elastic Limit

• Plastic Deformation

A measure of stiffness—The ability of a material to resist stretching when loaded.

• Modulus of Elasticity

• Force over axial distance

• Cross Sectional Area over Elongation

• Modulus of Plasticity

In following Brinell hardness quotation

(1800 HBW 10/3000/30 ), 30 is for

• Diameter of indenter

• The applied force

• Test time

• Indenter material