MATERIAL STRUCTURE

Stress is generally defined as

• pressure per unit area

• force per unit area

• force per unit diameter

• pressure per unit length

When forces cause a compression of an object, we call it a

• shear stress

• tensile stress

• compressive stress

• tension stress

Image represent the formula for ?

• ductile

• strain

• strength

• stress

This is formula for ?

• stress

• strain

• brittle

• pressure

The picture shows a compression stress is happening

• YES

• NO

What is A?

• Ductile region

• Material region

• Plastic region

• Polymer region

Plastic deformation is shape of the material changes, atoms are permanently displaced from their positions.

• YES

• NO

What will happen to material when it reach the point B?

• The point at metal returns to its original dimensions

• The point at when two antiparallel forces of equal magnitude act on an object along only one of its dimensions

• The point at which a material ceases to be plastic and becomes permanently elastic

• The point at which a material ceases to be elastic and becomes permanently plastic.

What is A?

• Low carbon steel material

• Brittle material

• PVC material

• Strength material

What will happen to material when reach the point E?

• The material will fatique

• The material will go to the original size

• The material will fracture

• The material will stress