Vibration Characteristics Analysis of Adhesively Bonded Different Joints

Abstract

Joining components is a critical concern in material science and construction. Adhesively bonded joints have been used extensively in engineering applications. This issue draws the attention of researchers. This paper investigates the vibration properties of adhesively bonded different joints with double-sided adhesive tape, experimentally. Single lap joint, single strap joint, and double strap joint were taken into consideration as joint types.  Vibration tests were conducted on constructed joints and results were evaluated based on natural frequencies and their corresponding damping ratios which were obtained from experimental data. The influences of adhesive tape thickness, aluminium plate thickness, and overlap length on vibration behaviour were also studied. In brief, growing overlap length increases both the natural frequencies and damping ratios of the system for single lap joints. For both single strap and double strap joints, overlap length does not play an important role in the natural frequencies but it has an essential effect on the damping ratios. Based on the results, double strap joint construction attained the best damping capability, which proves different joint constructions are another effective parameter affecting the damping ratio. Last but not least, it was noted that the adhesive tape thickness had a more significant effect over the damping ratio than the effect of overlap length.