ABSTRACT
In every case where dissimilar materials are bonded together and undergo a subsequent change in dimension (from a change of temperature, loading or moisture content), stresses will develop at the interface due to the mismatch of material properties. Numerical solutions predict very high stress gradients near the interface [1], but experimental measurements are needed to supplement these studies. Moiré interferometry was chosen to study this problem because full-field capabilities were required to measure the high strain gradients near the interface. In this study, the complex state of elastic strains and corresponding stresses in the region of a bimaterial interface were evaluated using moiré interferometry, where the loading was a uniform temperature change.
