Dynamic Strength of Adhesive Layer under Combined Impact Loading using Clamped Hopkinson Bar Method.

The dynamic strength of an adhesively bonded joint was investigated experimentally. Strength of an adhesive layer and an interface between adhesive and adherend under combined impact loading was measured using the clamped Hopkinson bar method. A tuber butt adhesive joint was used for the experiment. The strength of the adhesive joint was determined by measuring strain transmitted in the transmission tube of the specimen. The dynamic strength of the adhesive layer was greater than the static strength under tensile and shear loads. The time duration to fracture, however, was very short.