Mechanical Characterization of Adhesive Layer in-situ and as Bulk Material

Abstract

An extensive test series was conducted on bulk and in-situ adhesive specimens with a view to characterizing their mechanical properties under different loading modes and states of stress.

It was found that a good correlation exists between the in-situ and the bulk properties of shear yield strength and elastic modulus derived from torsion tests. The properties derived from uniaxial testing of the bulk adhesive were related to those of an in-situ adhesive layer in shear by a combined stress law which follows a modified Von Mises failure criterion. It was thus concluded that the basicelastic and strength characteristics of the in-situ adhesive under a compound state of stress may be evaluated through simple tests on the bulk material in uniaxial tension and compression.