METHOD AND APPARATUS FOR MONITORING A QUALITY OF AN OBJECT OF A 3D-PRINT-JOB SERIES OF IDENTICAL OBJECTS

摘要

An apparatus and method for monitoring a quality of an object of a 3D-print job series of identical objects, each object (300) built from a multitude of stacked 2D-layers (L1,..,Ln) printed by a 3D-printer (200) in an additive manufacturing process, comprising:- determining (S1) a layer quality indicator (QI) of a currently printed layer (Li) of an object,- comparing (S2) the determined layer quality indicator (QI) of the currently printed layer (Li) with a predetermined lower confidence limit of the layer, the predetermined lower confidence limit being calculated depending on layer quality indicators of previously completely manufactured objects complying with predefined quality requirements, and- generating (S3) a warning signal, if the layer quality indicator (QI) of the currently printed layer (Li) has a value equal or lower than the lower quality limit (LCL).