Polymer Engineering Faculty Research
Material characterization of structural adhesives in the lap shear mode
Abstract
A general method for characterizing structural adhesives in the bonded lap shear mode is proposed. Two approaches — semi-empirical and theoretical — are assessed. The semi-empirical approach includes Ludwik's and Zhurkov's equations to describe, respectively, the failure stresses in the constant strain-rate and constant stress loading modes with the inclusion of temperature effects. The theoretical approach is used to describe adhesive shear stress/strain behaviour by utilizing viscoelastic or non-linear elastic constitutive equations. On the basis of this approach an empirical extension of Crochet's delayed failure equation is proposed to account for the effects of high temperature.
This paper has been withdrawn.