Hardness
Determination of the surface’s or coating’s resistance against an applied deforming force For this, a sharp or blunt stylus is usually facilitated, depending on the inspected material
Haptics
Form of interaction involving touch and the process of recognizing objects through touch
Hand abrasion
A special abrasion between the product surface and human hand which has chemical environment and mechanical rubbing motion is simulated by ABREX® (ABREX®-Abrasion)
Friction
The force that makes it difficult for things to move freely when they are touching each other
Frame
A structure supporting or containing something
Fracture
This type of deformation is also irreversible A break occurs after the material has reached the end of the elastic, and then plastic, deformation ranges At this point forces accumulate until they are sufficient to cause a fracture
Fingerprint affinity
The tendency that human fingerprint is imprinted onto the surface of the product
Fingernail scratch
A mark of abrasion on a surface by human fingernail
Elasticity
Elasticity is the ability of a body to resist a distorting influence or stress and to return to its original size and shape when the stress is removed
Effective Contact area
When two objects touch, a certain portion of their surface areas will be in contact with each other Also usable for haptic evaluation  Because of the shape of the human finger tip, we only can perceive the uppermost microns of an object s surface