The absorption of polymeric composites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F16%3AN0000029" target="_blank" >RIV/26232511:_____/16:N0000029 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1063/1.4952290" target="_blank" >http://dx.doi.org/10.1063/1.4952290</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4952290" target="_blank" >10.1063/1.4952290</a>

Result language

angličtina

Original language name

The absorption of polymeric composites

Original language description

An absorption capacity of soft, viscoelastic materials at high strain rates is important for wide range of practical applications. Nowadays there are many variants of numerical models suitable for this kind of analysis. The main difficulty is in selection of the most realistic numerical model and a correct setup of many unknown material constants. Cooperation between theoretical simulations and real testing is next crucial point in the investigation process. Standard open source material database offer material properties valid for strain rates less than 250 s-1. There are experiments suitable for analysis of material properties with strain rates close to 2000 s-1. The high strain-rate characteristics of a specific porous blast energy absorbing material measured by modified Split Hopkinson Pressure Bar apparatus is presented in this study. Testing these low impedance materials using a metallic split Hopkinson pressure bar setup results in poor signal to noise ratios due to impedance mismatching. These difficulties are overcome by using polymeric Hopkinson bars. Conventional Hopkinson bar analysis cannot be used on the polymeric bars due to the viscoelastic nature of the bar material. One of the possible solution leads to complex and frequency depended Young modulus of testing bars material. This testing technique was applied to materials composed of porous glass/ceramic filler and polymeric binder, with density of 125 - 300 kg/m3 and particle size in range of 50 µm – 2 mm. The achieved material model was verified in practical application of sandwich structure includes polymeric composites under a blast test.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JJ - Other materials

OECD FORD branch

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Project

<a href="/en/project/GA13-22945S" target="_blank" >GA13-22945S: Research of advanced constructions for impact energy absorption and on their behavior at high strain rates</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

AIP Conference Proceedings

ISBN

978-073541392-4

ISSN

—

e-ISSN

—

Number of pages

8

Pages from-to

nestrankovano

Publisher name

American Institute of Physics Inc

Place of publication

New York

Event location

Rhodes, Greece

Event date

Sep 22, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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