3.6 Design rules for optimal adhesion

Observations:

  • For the same force, a thin adhesive film deforms less than a thicker film of the same adhesive.
  • Thin adhesive film: Smaller deformation with higher stress peaks. In the test: Smaller elongation at fracture and higher strength
  • Thick adhesive film: Greater deformation with lower stress peaks. In the test: Greater elongation at fracture and lower strength