S.E. Civil 2019 Pattern- Mechanics of Structures Practical's 4. Impact Test on metals- Izode Test The Izode impact strength test is an ASTM standard method of determining the impact resistance of materials. A pivoting arm is raised to a specific height (constant potential energy) and then released. The arm swings down hitting a notched sample, breaking the specimen. The energy absorbed by the sample is calculated from the height the arm swings to after hitting the sample. Please watch video for more details-