Abstract
The Charpy impact test machine is used for the measurement of fracture energy under impact load. However, as the energy for the specimen to be displaced is also contained in the measurement value, it is difficult to measure the energy used only for the fractured specimen. Therefore, we used the Hopkinson pressure bar method, where dynamic stress and strain can directly be gained. From the stress waveform obtained, the fracture energy of the adhesion under impact load was computed. Consequently, the fracture energy between the adhesion tape and the adherend joints interface was 2.5J/m^2.
