Počet záznamů: 1
Deformation behaviour of a natural-shaped bone scaffold
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SYSNO ASEP 0461386 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Deformation behaviour of a natural-shaped bone scaffold Tvůrce(i) Kytýř, Daniel (UTAM-F) SAI, RID, ORCID
Doktor, Tomáš (UTAM-F) RID, SAI, ORCID
Jiroušek, O. (CZ)
Fíla, Tomáš (UTAM-F) RID, SAI, ORCID
Koudelka_ml., Petr (UTAM-F) RID, SAI, ORCID
Zlámal, Petr (UTAM-F) RID, SAI, ORCIDCelkový počet autorů 6 Zdroj.dok. Materiali in Tehnologije. - : Institut za Kovinske Materiale in Tehnologije - ISSN 1580-2949
Roč. 50, č. 3 (2016), s. 301-305Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. SI - Slovinsko Klíč. slova bone scaffold ; polylactic acid ; additive manufacturing ; compression loading ; microtomography Vědní obor RIV JJ - Ostatní materiály Institucionální podpora UTAM-F - RVO:68378297 UT WOS 000385008500003 EID SCOPUS 84975066518 DOI 10.17222/mit.2014.190 Anotace The study aims at mechanical testing of an artificial bone structure in the form of a scaffold for the application in the repairs of trabecular bones after wounds or degenerative diseases. Such artificial construct has to conform to many requirements including biocompatibility, permeability properties and bone-integration characteristics. Recently, self-degradable bone scaffolds suitable for natural-bone-tissue ingrowth optimized with respect to mechanical properties and body-fluid flow have been considered as an alternative to allografts and autografts. Here, an analysis of deformation behaviour of a scaffold with a morphology identical to the natural bone is the first step in this task. In this work, the geometry and morphology of scaffold specimens produced with direct 3D printing were based on a 3D model derived from the X-ray-computed micro-tomography measurement of a real trabecular bone. The geometrical model was upscaled four times in order to achieve the optimum ratio between its resolution and the resolution of the 3D printer. For its biocompatibility and self-degradability, polylactic acid was used as the printing material. The mechanical characteristics were obtained from a series of uniaxial compression tests, with an optical evaluation of the strain field on the surfaces of the specimens. The acquired stress-strain curves were compared with the characteristics of a real trabecular bone obtained with time-lapse microtomography measurements, evaluated with the digital volumetric correlation method. The results show good correspondence of the stiffness values for both the natural and artificial bone specimens. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2017 Elektronická adresa http://mit.imt.si/Revija/izvodi/mit163/kytyr.pdf
Počet záznamů: 1