Summary: | Additive manufacturing is a robust process for building complex parts with improved mechanical properties. However, if a problem occurs during manufacturing, the production batch will present microstructural defects that reduce the mechanical properties and reliability of the part. Part post-processing represents a significant production time and production cost. Therefore, it is necessary to find a fast, simple, cheap, and efficient test to check production batch quality. High deformation rate tests are promising. We performed the Charpy impact test with reduced-size samples to investigate a specific height where defects may be suspected or critical. Charpy impact test's ability to detect an intentionally introduced defect in a tested sample is studied, involving exploitation of force-displacement data recorded during the test on reduced-size samples. For a defect localized within the notch plane, the results show that reduced-size samples allow for detecting a localized defect. Resilience values are reduced by 10%, and the force-displacement curves show a divergence in the propagation regime. Defects shifted from the notch plane are also detected, but not more than 500 μm, allowing the detection of production batch break.
|