Format:
1 Online-Ressource (xi, 97, LIII Seiten, 29941 KB)
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Illustrationen, Diagramme
Content:
Additive Manufacturing (AM) in terms of laser powder-bed fusion (L-PBF) offers new prospects regarding the design of parts and enables therefore the production of lattice structures. These lattice structures shall be implemented in various industrial applications (e.g. gas turbines) for reasons of material savings or cooling channels. However, internal defects, residual stress, and structural deviations from the nominal geometry are unavoidable. In this work, the structural integrity of lattice structures manufactured by means of L-PBF was non-destructively investigated on a multiscale approach. A workflow for quantitative 3D powder analysis in terms of particle size, particle shape, particle porosity, inter-particle distance and packing density was established. Synchrotron computed tomography (CT) was used to correlate the packing density with the particle size and particle shape. It was also observed that at least about 50% of the powder porosity was released during production of the struts. Struts are the component of lattice ...
Note:
Dissertation Universität Potsdam 2020
Additional Edition:
Erscheint auch als Druck-Ausgabe Thiede, Tobias A multiscale analysis of additively manufactured lattice structures Potsdam, 2019
Language:
English
Keywords:
Rapid Prototyping
;
Laserschmelzen
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Lattice material
;
Zerstörungsfreie Werkstoffprüfung
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Hochschulschrift
DOI:
10.25932/publishup-47041
URN:
urn:nbn:de:kobv:517-opus4-470418
URL:
https://d-nb.info/1219515442/34
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