Effect of Polymeric Fillers on Poisson’s Function in Additively Manufactured Auxetics
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F22%3A00364082" target="_blank" >RIV/68407700:21260/22:00364082 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.21495/51285" target="_blank" >https://doi.org/10.21495/51285</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21495/51285" target="_blank" >10.21495/51285</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of Polymeric Fillers on Poisson’s Function in Additively Manufactured Auxetics
Popis výsledku v původním jazyce
In this study, the relation between the presence of the filler in different types of open auxetic lattices and their Poisson’s functions was investigated using optical strain measurement technique and Digital Image Correlation (DIC) algorithms. Three different types of auxetics were manufactured using Selective Laser Sintering (SLS) technique from 316L–040 stainless steel alloy: (i) 2D re-entrant, (ii) 3D re-entrant and (iii) 2D missing rib structure. All types of SLS printed auxetics were then divided into three different groups according to the presence of the filler: (a) unfilled and filled with (b) porous polyurethane foam and (c) ordnance gelatin. All groups of sam- ples were tested in uniaxial compression mode under both quasi-static and high strain rates in the range of thousands strains per second using the Split Hopkinson pressure bar. During the loading tests, the deforming structure was observed optically and from the captured image data, the in-plane displacements were calculated using DIC. Based on these displacements, Poisson’s functions among the tested groups were compared. The results show that in the case of both types of polymeric fillers, the auxetic behaviour is suppressed with increasing values of longitudinal strain.
Název v anglickém jazyce
Effect of Polymeric Fillers on Poisson’s Function in Additively Manufactured Auxetics
Popis výsledku anglicky
In this study, the relation between the presence of the filler in different types of open auxetic lattices and their Poisson’s functions was investigated using optical strain measurement technique and Digital Image Correlation (DIC) algorithms. Three different types of auxetics were manufactured using Selective Laser Sintering (SLS) technique from 316L–040 stainless steel alloy: (i) 2D re-entrant, (ii) 3D re-entrant and (iii) 2D missing rib structure. All types of SLS printed auxetics were then divided into three different groups according to the presence of the filler: (a) unfilled and filled with (b) porous polyurethane foam and (c) ordnance gelatin. All groups of sam- ples were tested in uniaxial compression mode under both quasi-static and high strain rates in the range of thousands strains per second using the Split Hopkinson pressure bar. During the loading tests, the deforming structure was observed optically and from the captured image data, the in-plane displacements were calculated using DIC. Based on these displacements, Poisson’s functions among the tested groups were compared. The results show that in the case of both types of polymeric fillers, the auxetic behaviour is suppressed with increasing values of longitudinal strain.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
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OECD FORD obor
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
Návaznosti výsledku
Projekt
<a href="/cs/project/GM22-18033M" target="_blank" >GM22-18033M: Dynamika rázů s využitím rychlé rentgenové radiografie a zábleskového rentgenového zdroje</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
ENGINEERING MECHANICS 2022
ISBN
978-80-86246-51-2
ISSN
1805-8248
e-ISSN
1805-8256
Počet stran výsledku
4
Strana od-do
85-88
Název nakladatele
Institute of Theoretical and Applied Mechanics, AS CR
Místo vydání
Prague
Místo konání akce
Milovy
Datum konání akce
9. 5. 2022
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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