Ceramic phononic crystals with MHz-range frequency band gaps

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00328048" target="_blank" >RIV/68407700:21340/17:00328048 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1121/2.0000690" target="_blank" >http://dx.doi.org/10.1121/2.0000690</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1121/2.0000690" target="_blank" >10.1121/2.0000690</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ceramic phononic crystals with MHz-range frequency band gaps

Popis výsledku v původním jazyce

Robocasting is an additive manufacturing method, which is capable of fabricating microarchitectured scaffolds, consisting of periodically repeating thin ceramic rods in various spatial arrangements. Fully sintered ceramic scaffolds are obtained by a combination of layer-by-layer 3D printing and subsequent presureless spark plasma sintering of the printed green ceramic bodies. Due to the complex structures with easily tunable geometric parameters, phononic crystals can be fabricated by the robocasting method. In this contribution, elastic and acoustic properties of the robocast silicon carbide scaffold are shown, utilizing a combination of resonant ultrasound spectroscopy measurement and finite element modeling. The scaffold is highly anisotropic in elastic properties, which leads to a strong acoustic energy focusing along the principal axes of the silicon carbide rods. Moreover, frequency band gaps in MHz range are detected by measur-ing longitudinal wave transmission, which is compared with a theoretical prediction by the finite element modeling.

Název v anglickém jazyce

Ceramic phononic crystals with MHz-range frequency band gaps

Popis výsledku anglicky

Robocasting is an additive manufacturing method, which is capable of fabricating microarchitectured scaffolds, consisting of periodically repeating thin ceramic rods in various spatial arrangements. Fully sintered ceramic scaffolds are obtained by a combination of layer-by-layer 3D printing and subsequent presureless spark plasma sintering of the printed green ceramic bodies. Due to the complex structures with easily tunable geometric parameters, phononic crystals can be fabricated by the robocasting method. In this contribution, elastic and acoustic properties of the robocast silicon carbide scaffold are shown, utilizing a combination of resonant ultrasound spectroscopy measurement and finite element modeling. The scaffold is highly anisotropic in elastic properties, which leads to a strong acoustic energy focusing along the principal axes of the silicon carbide rods. Moreover, frequency band gaps in MHz range are detected by measur-ing longitudinal wave transmission, which is compared with a theoretical prediction by the finite element modeling.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of Meetings on Acoustics

ISBN

—

ISSN

1939-800X

e-ISSN

—

Počet stran výsledku

5

Strana od-do

1-5

Název nakladatele

Acoustical Society of America

Místo vydání

Melville

Místo konání akce

Honolulu

Datum konání akce

18. 12. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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