Question

When hardness is measured under dynamic loading conditions, it is known as hardness. Option 1: Knoop Option 2: Rebound Option 3: Brinell Option 4: Rockwell​

Answer 1

Answer:

b) Rebound

Explanation:

Hardness is both a static and a dynamic property. When hardness is measured by dynamic loading, it is known as rebound hardness .It is related to the height of the rebound.

Answer 2

When hardness is measured below dynamic loading conditions, it's far referred to as Rebound hardness.

Explanation:

• Hardness is each a static and a dynamic property. When hardness is measured via way of means of dynamic loading, it's far referred to as rebound hardness.
• It is associated with the peak of the rebound.
• Hardness is the property of a material that permits it to resist plastic deformation, penetration, indentation, and scratching.
• It's SI unit of hardness is N/mm².
• The unit Pascal is for that reason used for hardness as well however hardness have to now no longer be confused with pressure.
• The distinct kinds of hardness have distinct scales of measurement.

The correct answer is Rebound.