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  2. Charpy impact test - Wikipedia

    en.wikipedia.org/wiki/Charpy_impact_test

    In materials science, the Charpy impact test, also known as the Charpy V-notch test, is a standardized high strain rate test which determines the amount of energy absorbed by a material during fracture. Absorbed energy is a measure of the material's notch toughness. It is widely used in industry, since it is easy to prepare and conduct and ...

  3. Notch (engineering) - Wikipedia

    en.wikipedia.org/wiki/Notch_(engineering)

    The most common is the Charpy impact test, which uses a pendulum hammer (striker) to strike a horizontal notched specimen. The height of its subsequent swing-through is used to determine the energy absorbed during fracture. The Izod impact strength test uses a circular notched vertical specimen in a cantilever configuration. Charpy testing is ...

  4. Fracture toughness - Wikipedia

    en.wikipedia.org/wiki/Fracture_toughness

    There are several types of test used to measure fracture toughness of materials, which generally utilise a notched specimen in one of various configurations. A widely utilized standardized test method is the Charpy impact test whereby a sample with a V-notch or a U-notch is subjected to impact from behind the notch. Also widely used are crack ...

  5. Izod impact strength test - Wikipedia

    en.wikipedia.org/wiki/Izod_impact_strength_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 (1876–1946), who described it in his 1903 address to the British Association, subsequently published in ...

  6. Polymer characterization - Wikipedia

    en.wikipedia.org/wiki/Polymer_characterization

    This would be observable in a stress strain graph found through tensile testing. Sample preparation, including chain orientation within the sample, for tensile tests therefore can play a large role in the observed mechanical properties. The fracture properties of crystalline and semicrystalline polymers can be evaluated with Charpy impact ...

  7. Materials Technology Laboratory - Wikipedia

    en.wikipedia.org/wiki/Materials_Technology...

    The Charpy impact test allowed arsenal researchers to verify that armor steels were properly heat treated to exhibit sufficient toughness for armor use. While industry doubted the reliability of the Charpy test results, Watertown Arsenal researchers believed that the test could help determine the service fitness of gun steels, armor plate ...

  8. Are Weight Loss Injections Safe? What to Know Before ... - AOL

    www.aol.com/weight-loss-injections-safe-know...

    This is a legal — and common — practice for many medications. Most type 2 diabetes injections for weight loss are glucagon-like peptide-1 (GLP-1) receptor agonists.

  9. Toughness - Wikipedia

    en.wikipedia.org/wiki/Toughness

    The height from which the pendulum fell, minus the height to which it rose after deforming the specimen, multiplied by the weight of the pendulum, is a measure of the energy absorbed by the specimen as it was deformed during the impact with the pendulum. The Charpy and Izod notched impact strength tests are typical ASTM tests used to determine ...