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notch impact strength
notch impact strength
Izod impact testing 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. A notched sample is generally used to determine impact energy and notch sensitivity.
The test is similar to the Charpy impact test but uses a different arrangement of the specimen under test.The Izod impact test differs from the Charpy impact test in that the sample is held in a cantilevered beam configuration as opposed to a three-point bending configuration.
The test is named after the English engineer Edwin Gilbert Izod , who described it in his 1903 address to the British Association, subsequently published in Engineering.
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