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Charpy test

Volodia Shust

Created on March 1, 2023

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Transcript

charpy test

Test characteristics

  • Sharpy test determines the impact resistance of materials.
  • Destructive test
  • Charpy pendulum used

Test procedure

Test S235JR

Test Al 2007

  • check the suitability of the test tube;
  • verification of zeroing of the Charpy pendulum ;
  • positioning of the specimen;
  • execution of the test in compliance with the safety standards;
  • data collection and analysis of results:
Work to brake the specimen:W = ( m·g·H ) – ( m·g·h) m = the pendulum mass g = gravitational acceleration The impact toughness:K = W / So S0 : cross-section area of the specimen at the notch.

V-shaped notch Not broken with W = 13.6 J K = 18 J/mm2 W = m g H

V-shaped notch W = 4 J K = 6.6 J/mm2

specimen fracture:

specimen fracture:

Test specimen

  • U-shaped notch, 5 mm deep
  • V-shaped one, 2 mm deep
  • non-ferrous materials - Mesnager tube V-shaped notch, 2 mm deep