Method of measuring the amount of energy absorbed by a material during fracture
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Mechanical failure modes
Buckling
Corrosion
Corrosion fatigue
Creep
Fatigue
Fouling
Fracture
Hydrogen embrittlement
Impact
Liquid metal embrittlement
Mechanical overload
Metal-induced embrittlement
Stress corrosion cracking
Sulfide stress cracking
Thermal shock
Wear
Yielding
A modern impact test machine.
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 results can be obtained quickly and cheaply. A disadvantage is that some results are only comparative.[1] The test was pivotal in understanding the fracture problems of ships during World War II.[2][3]
The test was developed around 1900 by S. B. Russell (1898, American) and Georges Charpy (1901, French).[4] The test became known as the Charpy test in the early 1900s due to the technical contributions and standardization efforts by Charpy.
^
Meyers Marc A; Chawla Krishan Kumar (1998). Mechanical Behaviors of Materials. Prentice Hall. ISBN 978-0-13-262817-4.
^"The Design and Methods of Construction Of Welded Steel Merchant Vessels: Final Report of a (U.S. Navy) Board of Investigation". Welding Journal. 26 (7): 569. July 1947.
^Williams, M. L. & Ellinger, G. A (1948). Investigation of Fractured Steel Plates Removed from Welded Ships. National Bureau of Standards Rep.
^Siewert
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In materials science, the Charpyimpacttest, also known as the Charpy V-notch test, is a standardized high strain rate test which determines the amount...
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megapascals; J2 or K2 denotes the materials toughness by reference to Charpyimpacttest values; and the 'W' denotes weathering steel. Further letters can...
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strength test on a notched specimen of the material. The ratio between the NTS and the tensile strength is called the notch strength ratio (NSR). Charpy impact...
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