Format:
1 Online-Ressource (XVII, 135 Seiten, 42410 KB)
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Illustrationen, Diagramme
Content:
Additive manufacturing (AM) processes enable the production of metal structures with exceptional design freedom, of which laser powder bed fusion (PBF-LB) is one of the most common. In this process, a laser melts a bed of loose feedstock powder particles layer-by-layer to build a structure with the desired geometry. During fabrication, the repeated melting and rapid, directional solidification create large temperature gradients that generate large thermal stress. This thermal stress can itself lead to cracking or delamination during fabrication. More often, large residual stresses remain in the final part as a footprint of the thermal stress. This residual stress can cause premature distortion or even failure of the part in service. Hence, knowledge of the residual stress field is critical for both process optimization and structural integrity. Diffraction-based techniques allow the non-destructive characterization of the residual stress fields. However, such methods require a good knowledge of the material of interest, as certain ...
Note:
kumulative Dissertation
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Dissertation Universität Potsdam 2023
Additional Edition:
Erscheint auch als Druck-Ausgabe Schröder, Jakob Fundamentals of diffraction-based residual stress and texture analysis of laser powder bed fused Inconel 718 Potsdam, 2023
Language:
English
Keywords:
Hochschulschrift
DOI:
10.25932/publishup-62197
URN:
urn:nbn:de:kobv:517-opus4-621972