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Lebensdauerberechnung von additiv gefertigten Ermüdungsproben in Abhängigkeit der Aufbaurichtung

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Description

Für die Auslegung sicherheitsrelevanter Bauteile wird vermehrt die FKM-Richtlinie-Nichtlinear verwendet. Dabei werden die zu erwartenden Beanspruchungen und standardisierten Werkstoffkennwerte, z. B. im Zugversuch ermittele Kennwerte, berücksichtigt, womit jedoch die aus additiven Fertigungsverfahren resultierenden Charakteristika in der Mikrostruktur und den entsprechenden mechanischen Eigenschaften nur bedingt abgebildet werden können. Die additive Fertigung bietet dank ihres hohen geometrischen Freiheitsgrades enormes Potenzial. Allerdings stellt die Berechnung der Ermüdungsfestigkeit eine Herausforderung dar, da die Mikrostruktur, Anisotropie, Porosität sowie die besondere Randschicht mitbetrachtet werden müssen und nicht ohne Weiteres mit bestehenden Auslegungskonzepten berücksichtigt werden können. Im vorliegenden Beitrag wird dementsprechend anhand von mittels pulverbettbasiertem Laser-Strahlschmelzen von Metallen PBF-LB (engl. Powder Bed Fusion Laser Beam) gefertigten Proben aus AISI 316L diskutiert, welche Abweichungen durch bestehende Auslegungsansätze entstehen. Hierzu werden erste Ergebnisse der auf der aktuellen FKM-Richtlinie-Nichtlinear basierenden Schwingfestigkeitsberechnung von unterschiedlich zur Aufbaurichtung orientierten Ermüdungsproben im Vergleich zu den experimentell ermittelten Ergebnissen vorgestellt.

Reference: ADD-2024-444

Title: Lebensdauerberechnung von additiv gefertigten Ermüdungsproben in Abhängigkeit der Aufbaurichtung
Author(s): A. Warth, A. Al-Zuhairi, M. Wächter, P. Rahm, B. Blinn, T. Beck, R. Teutsch
DOI: 10.48447/ADD-2024-444
Event: DVM-Arbeitskreis Arbeitskreis Additiv gefertigte Bauteile und Strukturen - Tagung 2024
Year of publication: 2024
Publication type: conference paper (PDF)
Language: German
Keywords: Additive Fertigung,FKM-Richtlinie Nichtlinear,Lebensdauer,Mikrostruktur,Ermüdungsfestigkeit

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Author(s): M. Greiner, C. Mittelstedt

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Editor(s): M. Eiber, BMW Group, München; Prof. Dr.-Ing. H. A. Richard, Universität Paderborn

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9. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen

Publication type: conference proceedings (PDF)

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1

Untersuchungen an additiv gefertigten Werkzeugeinsätzen mit reduzierten thermischen Massen für den variothermen Spritzgießprozess

Publication type: conference paper (PDF)

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            [name] => Author(s)
            [value] => M. Fitzlaff, M. Käß, M. Werz, B. Gundelsweiler, S. Weihe
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    [2] => Array
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            [name] => DOI
            [value] => 10.48447/ADD-2024-477
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            [position] => 2
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    [3] => Array
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1

German

€25.00

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