Testing of auxetic materials using Hopkinson bar and digital image correlation
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F18%3A00494233" target="_blank" >RIV/68378297:_____/18:00494233 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68407700:21260/18:00323188
Výsledek na webu
<a href="https://doi.org/10.1051/epjconf/201818302045" target="_blank" >https://doi.org/10.1051/epjconf/201818302045</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/201818302045" target="_blank" >10.1051/epjconf/201818302045</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Testing of auxetic materials using Hopkinson bar and digital image correlation
Popis výsledku v původním jazyce
In this paper, a split Hopkinson pressure bar (SHPB) was used for impact loading of an auxetic lattice (structure with negative Poisson's ratio) at a given strain-rate. High strength aluminum and polym.ethyl methacrylate bars instrumented with foil strain-gauges were used for compression of an additively manufactured missing-rib auxetic lattice. All experiments were observed using a high-speed camera with frame-rate set to approx. 135.000 fps. High-speed images were synchronized with the strain-gauge records. Dynamic equilibrium in the specimen was analyzed and optimized pulse-shaping was introduced in the selected experiments. Longitudinal and lateral in-plane displacement& and strains were evaluated using digital image correlation (DIC) technique. DIC results were compared with results obtained from strain-gauges and were found to be in good agreement Using DIC, it was possible to analyze in-plane strain distribution in the specimens and to evaluate strain dependent Poisson's ratio of the auxetic structure.
Název v anglickém jazyce
Testing of auxetic materials using Hopkinson bar and digital image correlation
Popis výsledku anglicky
In this paper, a split Hopkinson pressure bar (SHPB) was used for impact loading of an auxetic lattice (structure with negative Poisson's ratio) at a given strain-rate. High strength aluminum and polym.ethyl methacrylate bars instrumented with foil strain-gauges were used for compression of an additively manufactured missing-rib auxetic lattice. All experiments were observed using a high-speed camera with frame-rate set to approx. 135.000 fps. High-speed images were synchronized with the strain-gauge records. Dynamic equilibrium in the specimen was analyzed and optimized pulse-shaping was introduced in the selected experiments. Longitudinal and lateral in-plane displacement& and strains were evaluated using digital image correlation (DIC) technique. DIC results were compared with results obtained from strain-gauges and were found to be in good agreement Using DIC, it was possible to analyze in-plane strain distribution in the specimens and to evaluate strain dependent Poisson's ratio of the auxetic structure.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GA15-15480S" target="_blank" >GA15-15480S: Optimalizované auxetické struktury pro kovové pěny s výplňovým materiálem citlivým na rychlost deformace pro vysokorychlostní nárazy</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2018
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
EPJ Web of Conferences
ISBN
978-2-7598-9053-8
ISSN
2100-014X
e-ISSN
—
Počet stran výsledku
6
Strana od-do
—
Název nakladatele
EDP Sciences
Místo vydání
Paris
Místo konání akce
Arcachon
Datum konání akce
9. 9. 2018
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—