Testing of auxetic materials using Hopkinson bar and digital image correlation
The result's identifiers
Result code in 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>
Alternative codes found
RIV/68407700:21260/18:00323188
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Testing of auxetic materials using Hopkinson bar and digital image correlation
Original language description
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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA15-15480S" target="_blank" >GA15-15480S: Optimized auxetic structures for cellular metals filled with strain rate sensitive material for high velocity impacts</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
EPJ Web of Conferences
ISBN
978-2-7598-9053-8
ISSN
2100-014X
e-ISSN
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Number of pages
6
Pages from-to
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Publisher name
EDP Sciences
Place of publication
Paris
Event location
Arcachon
Event date
Sep 9, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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