Testing of Hybrid Nickel-Polyurethane Foams at High Strain-Rates using Hopkinson Bar and Digital Image Correlation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F18%3A00326351" target="_blank" >RIV/68407700:21260/18:00326351 - isvavai.cz</a>

Výsledek na webu

<a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/5096" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/5096</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2018.18.0072" target="_blank" >10.14311/APP.2018.18.0072</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Testing of Hybrid Nickel-Polyurethane Foams at High Strain-Rates using Hopkinson Bar and Digital Image Correlation

Popis výsledku v původním jazyce

In this paper Split Hopkinson pressure bar (SHPB) was used for dynamic testing of nickel coated polyurethane hybrid foams. The foams were manufactured by electrodeposition of a nickel coating on the standard open-cell polyurethane foam. High strength aluminium alloy bars instrumented with foil strain-gauges were used for dynamic loading of the specimens. Experiments were observed using a high-speed camera with frame-rate set to approx. 100.000 – 150.000 fps. Precise synchronisation of the high-speed camera and the strain-gauge record was achieved using a through-beam photoelectric sensor. Dynamic equilibrium in the specimen was achieved in all measurements. Digital image correlation technique (DIC) was used to evaluate in-plane displacements and deformations of the samples. Specimens of two different dimensions were tested to investigate the collapse of the foam structure under high-speed loading at the specific strain-rate and strain.

Název v anglickém jazyce

Testing of Hybrid Nickel-Polyurethane Foams at High Strain-Rates using Hopkinson Bar and Digital Image Correlation

Popis výsledku anglicky

In this paper Split Hopkinson pressure bar (SHPB) was used for dynamic testing of nickel coated polyurethane hybrid foams. The foams were manufactured by electrodeposition of a nickel coating on the standard open-cell polyurethane foam. High strength aluminium alloy bars instrumented with foil strain-gauges were used for dynamic loading of the specimens. Experiments were observed using a high-speed camera with frame-rate set to approx. 100.000 – 150.000 fps. Precise synchronisation of the high-speed camera and the strain-gauge record was achieved using a through-beam photoelectric sensor. Dynamic equilibrium in the specimen was achieved in all measurements. Digital image correlation technique (DIC) was used to evaluate in-plane displacements and deformations of the samples. Specimens of two different dimensions were tested to investigate the collapse of the foam structure under high-speed loading at the specific strain-rate and strain.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

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

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

16th Youth Symposium On Experimental Solid Mechanics

ISBN

978-80-01-06474-0

ISSN

—

e-ISSN

2336-5382

Počet stran výsledku

5

Strana od-do

72-76

Název nakladatele

Česká technika - nakladatelství ČVUT, ČVUT v Praze

Místo vydání

Praha

Místo konání akce

Traunkirchen

Datum konání akce

17. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000454320800015