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Impact behavior of additively manufactured stainless steel auxetic structures at elevated and reduced temperatures
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SYSNO ASEP 0532678 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Impact behavior of additively manufactured stainless steel auxetic structures at elevated and reduced temperatures Author(s) Fíla, T. (CZ)
Koudelka, P. (CZ)
Falta, J. (CZ)
Šleichrt, J. (CZ)
Adorna, M. (CZ)
Zlámal, P. (CZ)
Neuhäuserová, M. (CZ)
Mauko, A. (SI)
Valach, Jaroslav (UTAM-F) SAI, ORCID, RID
Jiroušek, O. (CZ)Number of authors 10 Article number 2000669 Source Title Advanced Engineering Materials. - : Wiley - ISSN 1438-1656
Roč. 23, č. 1 (2021)Number of pages 7 s. Publication form Print - P Language eng - English Country DE - Germany Keywords additive manufacturing ; auxetic metamaterials ; split Hopkinson pressure bar ; strain rate sensitivity ; thermomechanical behavior Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects EF16_019/0000766 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UTAM-F - RVO:68378297 UT WOS 000573860100001 EID SCOPUS 85091725085 DOI 10.1002/adem.202000669 Annotation Metamaterials produced using additive manufacturing represent advanced structures with tunable properties and deformation characteristics. However, the manufacturing process, imperfections in geometry, properties of the base material as well as the ambient and operating conditions often result in complex multiparametric dependence of the mechanical response. As the lattice structures are metamaterials that can be tailored for energy absorption applications and impact protection, the investigation of the coupled thermomechanical response and ambient temperature‐dependent properties is particularly important. Herein, the 2D re‐entrant honeycomb auxetic lattice structures additively manufactured from powdered stainless steel are subjected to high strain rate uniaxial compression using split Hopkinson pressure bar (SHPB) at two different strain rates and three different temperatures. An in‐house developed cooling and heating stages are used to control the temperature of the specimen subjected to high strain rate impact loading. Thermal imaging and high‐speed cameras are used to inspect the specimens during the impact. It is shown that the stress–strain response as well as the crushing behavior of the investigated lattice structures are strongly dependent on both initial temperature and strain rate. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2022 Electronic address https://doi.org/10.1002/adem.202000669
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