Mechanical tests are commonly used to characterize structural adhesively-bonded assemblies since they give rise to typical values such as rupture load, stress, strain or energy. It is shown herewith, that for a single lap compression-shear test, it can also be of great interest to analyse the bonded assembly after rupture. The investigated fracture surfaces can reveal the presence of normal stresses in the joint and a valuation of their intensity can be done, from the crack deviation angle value. Actually, for adhesive ruptures, a transition zone exists where the crack propagates from one interface to the other. It is demonstrated from the failure occurrence that the deviation angle value does not depend on the adhesive itself but on distributions in the joint of different kinds of stresses (shear and normal ones). In addition to experimental angle measurements, numerical modelling was performed with the finite element computer code ANSYS. Experimental values match numerical values.