Essential Features and Uses of Charpy Impact Testing

The reason behind performing the Charpy impact testing is to understand the overall energy that has been absorbed by the material during fracture. Widely called a Charpy V-notch test, the testing process involves striking a given specimen using a weighted pendulum that gets swung at a desirable height. This type of impact testing method is commonly followed in many different industries as it is the best possible way to prepare the right materials. 

Widely acknowledged features of Charpy impact testing:

Charpy test showcases if a metal is ductile or brittle. These kinds of classification are highly used with the ferric type of steels, which tend to showcase them as ductile or brittle. Brittle metal, after passing through the required impact test, absorbs only minimum energy. Ductile metal absorbs higher energy levels. A generated fracture surface does provide information co-related to the type of fracture surface created through the process. The appearance is highly noted in finding the differences. The percentage of crystallinity can be calculated by judging the attained brittle fracture and understanding the crystalline used upon the specimen's outer parts. 

Usage of the Charpy impact testing in a different industry: 

  • In the forging industry, these types of impact tests are used to determine the ductility and malleability of the piece of material.
  • In the rubber industry, the Charpy impact test is used wisely to determine a rubber type's shock-absorbing capability. This way, the proper application of it can be easily decided. 
  • In the plastic industry, this impact test is quite used to analyse the overall breaking strength present with the sample materials, after subjecting them to high impact using a pendulum. This type of testing ensures that the chosen material type remains the best, even after subjecting them to different impact tests.

The entire Charpy test result gets reported based on the energy levels absorbed in the first place. This qualitative test is followed to calculate and compare the material with multiple specifications that can go easy with the same requirements.

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