The Izod and Charpy tests are essential impact testing methods used to measure the toughness of materials under sudden force. While both evaluate a material's ability to absorb energy, they differ in specimen positioning, notch orientation, and striking methods. The Izod test involves a vertical specimen with the notch facing the striker, whereas the Charpy test uses a horizontal specimen with the notch opposite the impact. Understanding these differences helps industries select the right test for quality assurance in metals, plastics, and composites. Explore their applications and significance in material testing.