Method and Device for the Additive Manufacturing of a Workpiece
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United States of America Patent
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Issued Date -
Oct 19, 2023
app pub date -
Jun 23, 2023
filing date -
Dec 23, 2020
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Abstract
A method for additively manufacturing a workpiece includes obtaining a dataset that defines the workpiece in a layer stack. The method includes producing the layers in sequential production steps using a layer forming tool. At a defined point in time, the stack has an uppermost layer and zero or more layers underneath. The method includes thermally exciting the layer stack with a first pulsed thermal excitation. The first pulsed thermal excitation includes a spatially structured heating pattern that heats the uppermost workpiece layer in parallel at mutually spatially distant excitation points. The method includes recording images of the uppermost workpiece layer after the first pulsed thermal excitation and inspecting the layer stack using the images in order to obtain an inspection result. The inspection result is based on a time-based individual deformation profile or a time-based individual temperature profile determined from the images.
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