The Influence of Surface Abrasion Treatment on the Properties of Substratum

Abstract

The strength of adhesive joints is in high dependence on real contact surface between the adhesive and substrate. The size of real contact surface depends not only on the geometrical parameters of substrate, but on the surface roughness, also. In order to find out quantitative relation between the substrate surface roughness and the shear strength of adhesive joints statistical parameters such as average surface roughness and standard deviation were calculated. It is shown that they depend on the substrate profile correlation function.
The expression of correlation functions, their coefficients and profile characteristics in dependence on the substrate abrasion treatment direction has been investigated. The possibility to predict properties of adhesive joints is discussed.
The expression of correlation function is independent on the substrate abrasion treatment direction.