Počet záznamů: 1
Ceramic phononic crystals with MHz-range frequency band gaps
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SYSNO ASEP 0503484 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV Záznam nebyl označen do RIV Název Ceramic phononic crystals with MHz-range frequency band gaps Tvůrce(i) Koller, M. (CZ)
Kruisová, Alena (UT-L) RID
Seiner, Hanuš (UT-L) RID, ORCID
Sedlák, Petr (UT-L) RID, ORCID
Grabec, Tomáš (UJF-V) ORCID
Román-Manso, B. (US)
Miranzo, P. (ES)
Belmonte, M. (ES)
Landa, Michal (UT-L) RIDCelkový počet autorů 9 Poč.str. 5 s. Akce International Congress on Ultrasonics : 2017 ICU Honolulu /6./ Datum konání 18.12.2017 - 20.12.2017 Místo konání Honolulu Země US - Spojené státy americké Typ akce WRD Jazyk dok. eng - angličtina Vědní obor RIV BI - Akustika a kmity Obor OECD Applied mechanics CEP GA17-01618S GA ČR - Grantová agentura ČR Institucionální podpora UT-L - RVO:61388998 DOI 10.1121/2.0000690 Anotace 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. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2019
Počet záznamů: 1