1. Impression created by indenter
2. Stiffness of the material
3. How strong is the material
4. Resistance to plastic deformation

1. Load/ diameter of contact surface
2. Load/ Area of contact surface
3. Load/ Length of contact surface
4. Load/radius of contact surface

1. Polymer
2. Metal
3. Glass
4. Ceramic

1. Elastic modulus
2. Hardness
3. Fracture toughness
4. Yield strength

1. Start of loading cycle
2. Start of holding cycle
3. Start of unloading cycle
4. Completion of unloading cycle

1. Indent depth
2. Contact area
3. Maximum load
4. Maximum displacement

1. Allow material to relax before unloading
2. Allow proper application of loading on material
3. Deform the material after loading
4. Evaluate hardness of the material

1. Enhance hardness
2. Enhance modulus
3. Decrease hardness
4. Decrease modulus

1. Higher elastic recovery
2. Higher plastic recovery
3. Lower elastic recovery
4. Lower plastic recovery

1. The recovery of material increases
2. The elastic work done increases
3. The hardness of material increases
4. The total work done increases