4. Conclusions
The ultrasonic inspection system has been completely tested at laboratory level. Laboratory tests have proved that the pulse echo ultrasonic technology is a suitable
method to be used for non-destructive testing in the powder metallurgy industry. Results show that a clear visual representation of the defect can be produced using this technology which can be used to determine the size and the location of the faults. Therefore, this technology cannot only be used as a monitoring/inspection tool but also as a quality assurance tool. In addition, it can be used to help die design and parameters improvement.