Structural Adhesive Joints in Engineering

Abstract

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Treatment of Steel Surfaces for Effective Adhesive Bonding

“…Adams et al 1997) have shown that the chemical composition of a surface can affect the adhesion strength, but among the cases examined in the present study, this effect is not clearly seen. Further studies are needed if the chemical composition of a surface is significantly different from those examined in this study.…”

“…Examination of Figure 1 together with Figure 3 indicates that a surface with a larger fractal dimension also has a larger surface energy, implying that these two quantities are related. By contrast, the surface chemical composition (Figure 2) does not seem to have a clear effect on the surface energy although some previous studies have shown that the existence of more aluminium and silicon atoms may increase the surface energy (Adams et al 1997). It was found that the characteristics of surfaces were closely similar when grit-blasted using the same grits, which offers the possibility of developing a standard surface preparation procedure.…”

Numerical experimental analysis of hybrid double lap aluminum-CFRP joints

“…According to the bonded joints theory [29][30][31][32][33], in order to avoid strongly asymmetric shear and peeling stress distributions at the adhesive-adherents interface, the thickness of the adherents must be chosen properly in such a way to realize quite balanced joints, i.e. joints in which the stiffness of the interior adherent is equal to the sum of the stiffness of the external adherents.…”

“…joints in which the stiffness of the interior adherent is equal to the sum of the stiffness of the external adherents. An unbalanced joint in fact leads to an increase of stresses on the attach edge of the more yielding adherent [29][30][31][32][33] and therefore, for fixed work conditions, it shows a lower strength than a balanced joint, regardless of the particular load direction (tensile or compression).…”

Determination of design mechanical properties of adhesives in a tensile and compression test

“…The strength of the adhesive joints obtained allows the transfer of loads. The possibility of combining different materials is a significant advantage [1][2].…”