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Recast Layer Evaluation for Turbine Blade OEMs
Electrical Discharge Machining (EDM) is a common technique used in manufacturing when high accuracy and complex geometries in a part are needed.
Performance of the electrical discharge machining process and characterization of process parameters can be evaluated by metallographically preparing cross sections of pieces and may include examinations for cracks, presence of copper, thickness of recast layer, and presence of redeposited material.
Evaluation of these affected regions is critical in the risk mitigation of flight critical components.