Predicting the Wear of the Tool Electrode in Copy Piercing Electric Discharge Machining of Polymer Composites

The influence of the parameters in the copy piercing electrical discharge machining of polymer composites on the wear of the tool electrode is investigated. A full factorial experiment is followed by regression analysis, yielding a regression model that describes the relation between the wear (by mass and extent) of the tool electrode and the machining conditions: the current, time of pulse action, and the voltage, individually and in combination.