Impact testing of polymer-filled auxetics using Split Hopkinson Pressure Bar
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F17%3A00313642" target="_blank" >RIV/68407700:21260/17:00313642 - isvavai.cz</a>
Alternative codes found
RIV/68378297:_____/17:00476089
Result on the web
<a href="http://dx.doi.org/10.1002/adem.201700076" target="_blank" >http://dx.doi.org/10.1002/adem.201700076</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adem.201700076" target="_blank" >10.1002/adem.201700076</a>
Alternative languages
Result language
angličtina
Original language name
Impact testing of polymer-filled auxetics using Split Hopkinson Pressure Bar
Original language description
In this paper, impact testing of auxetic structures filled with strain rate sensitive material is presented. Two dimensional missing rib, 2D re-entrant honeycomb, and 3D re-entrant honeycomb lattices are investigated. Structures are divided into three groups according to type of filling: no filling, low expansion polyurethane foam, and ordnance gelatine. Samples from each group are tested under quasi-static loading and dynamic compression using Split Hopkinson Pressure Bar. Digital image correlation is used for assessment of in-plane displacement and strain fields. Ratios between quasi-static and dynamic results for plateau stresses and specific energy absorption in the plateau are calculated. It is found out that not only the manufactured structures, but also the wrought material exhibit strain rate dependent properties. Evaluation of influence of filling on mechanical properties shows that polyurethane increases specific absorbed energy by a factor of 1.05–1.4, whereas the effect of gelatine leads to increase of only 5–10%. Analysis of the Poisson's function reveals influence of filling on achievable (negative) values of Poisson's ratio, when compared to unfilled specimens. The results for the Poisson's function yielded apparently different values as the assessed minima of quasi-static Poisson's ratio in small deformations are constrained by a factor of 15.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Engineering Materials
ISSN
1438-1656
e-ISSN
1527-2648
Volume of the periodical
19
Issue of the periodical within the volume
10
Country of publishing house
DE - GERMANY
Number of pages
13
Pages from-to
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UT code for WoS article
000413587700007
EID of the result in the Scopus database
2-s2.0-85019147431