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GB/T 38769-2020 English PDF (GBT38769-2020)

GB/T 38769-2020 English PDF (GBT38769-2020)

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GB/T 38769-2020: Metallic materials -- Measurement of fracture toughness at impact loading rates using precracked Charpy-type test pieces
This Standard stipulates the principles, specimens, testing machines, test procedures and measurements, calculation of fracture mechanical parameters and test reports of instrumental impact and evaluation of fracture toughness of prefabricated cracked Charpy specimens of metal materials by fracture mechanics methods. This Standard is applicable to the determination of fracture toughness of the prefabricated cracked Charpy-type specimens of metallic materials.

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