How do you report and document the Charpy impact test procedures and results?

2 How to prepare the specimens?

The specimens for the Charpy impact test must be prepared according to the relevant standards and specifications. The dimensions, shape, and notch geometry of the specimens must be consistent and accurate. The specimens must also be free of defects, such as cracks, scratches, or corrosion. The specimens must be conditioned to the desired temperature before testing, as the toughness of a material can vary with temperature. The specimens can be heated, cooled, or kept at room temperature, depending on the purpose of the test.

3 How to perform the test?

The Charpy impact test must be performed using a calibrated and verified machine, consisting of a rigid frame, a pendulum, a specimen holder, and a dial or digital display. The procedure for the test is to place the specimen on the holder with the notch facing the pendulum, set the pendulum at the specified height and release it. Then, record the final height of the pendulum and calculate the energy absorbed by the specimen. This process should be repeated for at least three specimens of the same material and condition in order to calculate the average energy absorbed by all specimens.

5 How to report and document the results?

The results of the Charpy impact test must be reported and documented in a clear and professional manner. The report should include the name and description of the material tested, including its composition, condition, and source, as well as the dimensions, shape, and notch geometry of the specimens used. It should also list the testing machine used, the test conditions, and the test results. Moreover, it should include an analysis and interpretation of the results, including any comparisons, conclusions, or recommendations. The report should also follow formatting and referencing guidelines of the intended audience or publication. The content of the report should be concise, accurate, and objective.