Absorbed Energy

The effect of impact energy on the scarf repaired/primary and the resultant residual tensile strength is discussed in this research paper. The low-velocity impact test was carried out at the center of the repaired and primary samples by varying impact energies and subsequently the damage assessment was done through damage dent, damage area and visual inspection of each impacted sample. Moreover, in order to visualize the microscopic damage and to get a clear picture of internal damage, SEM (Scanning electron microscopy) was employed on impacted samples. Additionally, the impact reaction performance of the impacted sample was compared with the primary samples by taking into account the contact force, displacement , absorbed energy, impact dent, impact time, and the damaged area. It was observed that the contact force was highest for the sample that was impacted with maximum impact energy. On calculation of the residual strength for both types of impacted samples it is found that the scarf repair sample is capable to recover 81.23% of the tensile strength. The tensile load percentage variations of the repaired samples when compared to primary samples are found to be 16.76%, 15.66%, 15.40%, 14.31%, and 13.51%. On application of this method, samples attained the least impact response (High impact energy) and during the process revealed the least tensile strength during impact after tensile test. Ó 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 1st International Conference on Energy, Material Sciences and Mechanical Engineering.