| Title: | Strain rate-dependent compressive properties of bulk cylindrical 3D-printed samples from 316L stainless steel |
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| Authors: | ID Neuhauserova, Michaela (Author)
ID Koudelka, Petr (Author)
ID Fíla, Tomáš (Author)
ID Falta, Jan (Author)
ID Rada, Václav (Author)
ID Sleichrt, Jan (Author)
ID Zlámal, Petr (Author)
ID Mauko, Anja (Author)
ID Jiroušek, Ondřej (Author) |
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| Files: |  materials-15-00941.pdf (10,71 MB)
MD5: 185A7407989EF4B0205028357468111D
 https://www.mdpi.com/1996-1944/15/3/941
|
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
|
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| Abstract: | The main aim of the study was to analyse the strain rate sensitivity of the compressive
deformation response in bulk 3D-printed samples from 316L stainless steel according to the printing
orientation. The laser powder bed fusion (LPBF) method of metal additive manufacturing was
utilised for the production of the samples with three different printing orientations: 0◦
, 45◦
, and 90◦
.
The specimens were experimentally investigated during uni-axial quasi-static and dynamic loading.
A split Hopkinson pressure bar (SHPB) apparatus was used for the dynamic experiments. The
experiments were observed using a high-resolution (quasi-static loading) or a high-speed visible-light
camera and a high-speed thermographic camera (dynamic loading) to allow for the quantitative and
qualitative analysis of the deformation processes. Digital image correlation (DIC) software was used
for the evaluation of displacement fields. To assess the deformation behaviour of the 3D-printed
bulk samples and strain rate related properties, an analysis of the true stress–true strain diagrams
from quasi-static and dynamic experiments as well as the thermograms captured during the dynamic
loading was performed. The results revealed a strong strain rate effect on the mechanical response of
the investigated material. Furthermore, a dependency of the strain-rate sensitivity on the printing
orientation was identified. |
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| Keywords: | 3D printing, laser powder bed fusion, 316L stainless steel, printing direction, split Hopkinson pressure bar |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 21.12.2021 |
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| Article acceptance date: | 17.01.2022 |
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| Publication date: | 26.01.2022 |
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| Publisher: | MDPI AG |
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| Year of publishing: | 2022 |
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| Number of pages: | 15 str. |
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| Numbering: | Vol. 15, iss. 3 (941) |
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| PID: | 20.500.12556/DKUM-92194  |
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| UDC: | 539.3:669.2/.8 |
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| ISSN on article: | 1996-1944 |
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| COBISS.SI-ID: | 98577667 |
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| DOI: | 10.3390/ma15030941 |
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| Copyright: | © 2022 by the authors |
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| Publication date in DKUM: | 20.03.2025 |
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| Views: | 161 |
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| Downloads: | 13 |
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| Metadata: |    |
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| Categories: | Misc.
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