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Home » Testing Machines By Test » Charpy Testing Machine

Charpy Testing Machine

Charpy Testing machine perform test on metals as well as on polymers, ceramics as well as composites and is commonly used for evaluating relative toughness/impact toughness of materials. This makes the test useful in quality control applications.

As a fast & economical test, it is used more as comparative test rather than definitive test where the Charpy test specimens normally measure 55x10x10mm. Further, these have notch that is machined across one of larger faces.

The notches may be in form of:
  • V-notch
  • U-notch/keyhole notch


Pendulum Impact Testing Machine Pendulum Impact Testing Machine - Charpy and Izod Impact Testing Machine for Plastic
Pendulum Impact Testing Machine Pendulum Impact Testing Machine - Charpy and Izod Impact Testing Machine for Plastic


The test process involves

  • Striking suitable test piece using striker that is mounted at end of pendulum
  • Test piece is fixed in place at both ends and striker impacts test piece immediately behind machined notch
  • At point of impact, striker contains known amount of kinetic energy
  • Impact energy is calculated based on possible height striker would have risen in case of no test specimen present in place
  • The result is then compared to height to which striker rises actually

Significance of Test

Charpy test assists in measuring energy absorbed by standard notched specimen while breaking under impact load and is economical quality control method for determination of notch sensitivity as well as impact toughness of engineering materials. The test is commonly used on metals as well as also on ceramics, polymers and composites. The test assists in evaluating relative toughness of material.

Target Industry :

  • Polymer manufacturing industry
  • Ceramics manufacturing industry
  • Metal fabrication industry
  • Oil and Gas
  • Aerospace
  • Power Generation
  • Automotive
  • Nuclear

Test Features & Advantages:

  • Test is quick as well as relatively easy to perform
  • The test is useful for assessing quality of product as well as for evaluating new products
  • The test helps in determining energy required for initialing fracture as well as energy required for propagating fracture


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