Two main mechanical tests are commonly used to measure the critical shear stress of an adhesive, Single Lap Shear (SLS) test and Thick Adherend Test (TAST). In these tests, assessment is performed with mode mixity. this work, a two-dimensional Finite Element Model asymmetric TAST set-up few on titanium/epoxy specimens. The model takes into account shift adhesive joint loading axis. impact shift...

In the present study, the transient stress distribution caused by a break in the fibers of an adhesive bonding is investigated. Transient stress is a dynamic response of the system to any discontinuity in the fibers from detachment time till their equilibrium state (or steady state). To derive the governing dynamic equilibrium equations shear lag model is used. Here, it is assumed that the tens...

The recent increase in the use of adhesively bonded joints (ABJs) made from dissimilar adherends demands acquisition a better understanding strength and behaviour these joints, including their failure mechanisms. Several studies have reported on such individually, however few compared performances ABJs with varying configurations design parameters, order to determine optimal configuration for h...

Adhesive resins for precious metals were prepared by adding an adhesion promoting monomer to MMA-PMMA/TBBO resin. Precious metal alloys bonded by the adhesive resin were thermocycled 0, 1,000, 2,000, or 4,000 times in water between 4 and 60 degrees C, and tensile bond strengths were measured. Debonded metal surfaces after the tensile test were analyzed based on an area of cohesive failure. Thre...

This study investigates the strain and stress states in an aluminum single lap joint bonded with a functionally graded Al2O3 micro particle reinforced adhesive layer subjected to uniform temperature field. Navier equations of elasticity theory were designated by considering spatial derivatives Lamé constants coefficient thermal expansion for local material composition. The set partial different...

Traditional load-to-failure tests fail to recreate clinical failures of all-ceramic restorations. Experimental fabrication, similar prosthetic laboratory and procedures, best predicts future performance. A hybrid ceramic adherend, mechanically a human tooth, was tested by comparing the shear bond strength (SBS) fracture mode four restorative materials adhered with dual-cure adhesive cement. Sur...