Adhesive force is a mechanical–chemical connection between a surface and a cohesive material. Mechanical force in this bond depends on the surface roughness and the chemical force is controlled by the molecules that connect the atoms of the material. In this work, the dynamic fracture toughness of a bonding adhesive is investigated using a novel spiral metal-epoxy specimen configuration. The specimen is made by a composite of two sides with a full spiral slot made through a cylindrical solid bar and bonded together with an epoxy material (Aluminum and Cohesion materials). The dynamic strength of the composite specimen is investigated using a Torsional Split Hopkinson Bar (TSHB). Experimental data is used in conjunction with a new theoretical formula to calculate the dynamic fracture toughness of the developed composite specimens. The results indicate that the dynamic fracture of epoxy is two times higher than the static values. Also, the details of the experimental setup and the specimen preparation are presented.