Improving the fatigue life of printed structures using stochastic variations

Sander van den Broek; Johannes Wolff; Sven Scheffler; Christian Hühne; Raimund Rolfes

doi:10.1007/s40964-022-00296-5

Improving the fatigue life of printed structures using stochastic variations

Sander van den Broek^*, Johannes Wolff, Sven Scheffler, Christian Hühne, Raimund Rolfes

^*Corresponding author for this work

Department of Aerospace Engineering

Research output: Contribution to journal › Article (Academic Journal) › peer-review

1 Citation (Scopus)

40 Downloads (Pure)

Abstract

Additive manufacturing allows designers to create geometries that would not be possible or economical to manufacture using traditional manufacturing processes. Production with these technologies does, however, introduce a large amount of variation and additional unknowns. These random variations from idealized geometry or material properties can harm the performance of the design. The current work presents an approach to improve the fatigue life of such structures, and simultaneously reduce its influence from random variations in local thickness. Following an initial numerical study, the results are experimentally validated. Experimental results show a significant improvement in fatigue life in the redesigned sample with a tailored thickness distribution.

Original language	English
Pages (from-to)	1225-1238
Number of pages	14
Journal	Progress in Additive Manufacturing
Volume	7
Issue number	6
DOIs	https://doi.org/10.1007/s40964-022-00296-5
Publication status	Published - 18 Apr 2022

Bibliographical note

Funding Information:
Open Access funding enabled and organized by Projekt DEAL. We would like to acknowledge the funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy-EXC 2163/1- Sustainable and Energy Efficient Aviation-Project-ID 390881007.

Publisher Copyright:
© 2022, The Author(s).

Keywords

Random field
Robust design
Fatigue improvement
Thickness tailoring
Additive manufacturing

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title = "Improving the fatigue life of printed structures using stochastic variations",

abstract = "Additive manufacturing allows designers to create geometries that would not be possible or economical to manufacture using traditional manufacturing processes. Production with these technologies does, however, introduce a large amount of variation and additional unknowns. These random variations from idealized geometry or material properties can harm the performance of the design. The current work presents an approach to improve the fatigue life of such structures, and simultaneously reduce its influence from random variations in local thickness. Following an initial numerical study, the results are experimentally validated. Experimental results show a significant improvement in fatigue life in the redesigned sample with a tailored thickness distribution.",

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AU - Wolff, Johannes

AU - Scheffler, Sven

AU - Hühne, Christian

AU - Rolfes, Raimund

N1 - Funding Information: Open Access funding enabled and organized by Projekt DEAL. We would like to acknowledge the funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy-EXC 2163/1- Sustainable and Energy Efficient Aviation-Project-ID 390881007. Publisher Copyright: © 2022, The Author(s).

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AB - Additive manufacturing allows designers to create geometries that would not be possible or economical to manufacture using traditional manufacturing processes. Production with these technologies does, however, introduce a large amount of variation and additional unknowns. These random variations from idealized geometry or material properties can harm the performance of the design. The current work presents an approach to improve the fatigue life of such structures, and simultaneously reduce its influence from random variations in local thickness. Following an initial numerical study, the results are experimentally validated. Experimental results show a significant improvement in fatigue life in the redesigned sample with a tailored thickness distribution.

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Improving the fatigue life of printed structures using stochastic variations

Abstract

Bibliographical note

Keywords

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