Defect-free metal additive manufacturing

Quality control in metal additive manufacturing

Metal additive manufacturing (or 3D printing of metal) is a promising technique in production environments. However, many companies struggle with quality control. High-end products such as turbine blades, impellers, functional parts for aeronautics, etc., have a dense metallic structure. For these applications, customers demand consistent and certified quality levels. Lower quality parts often contain porosities and other solidification defects. These are caused by suboptimal process conditions, e.g., when new parts are produced for the first time, or when, in a serial production, process conditions start drifting. To identify defects, to meet quality standards and to deliver certificates, a monitoring system which relies on in-process data is necessary.

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