Using homogenization and nanoindentation for microfibril angle determination of spruce

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F17%3A00507121" target="_blank" >RIV/68378297:_____/17:00507121 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/17:00316984

Výsledek na webu

<a href="https://doi.org/10.14311/APP.2017.13.0071" target="_blank" >https://doi.org/10.14311/APP.2017.13.0071</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2017.13.0071" target="_blank" >10.14311/APP.2017.13.0071</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Using homogenization and nanoindentation for microfibril angle determination of spruce

Popis výsledku v původním jazyce

This paper is concerned with the evaluation of microfibril angle of spruce. The microfibril angle is defined as an inclination of microfibrils from the longitudinal axis, the direction of lumens. It is well known and further supported by the present study that the microfibril angle has a great influence on the final mechanical properties of wood. This angle could be measured either directly using, e.g. polarisation microscopy, X-ray diffraction, infrared spectroscopy, or indirectly, as used in this study, by employing the nanoindentation measurements. Therein, the measured indentation modulus is compared with that obtained numerically using the anisotropic theory of indentation. The latter one depends on the entire stiffness matrix derived through homogenization and the searched microfibril angle. In view of the cell wall microstructure, the effective cell properties were found using the two-step micromechanical homogenization adopting both the Self-consistent and Mori-Tanaka methods.

Název v anglickém jazyce

Using homogenization and nanoindentation for microfibril angle determination of spruce

Popis výsledku anglicky

This paper is concerned with the evaluation of microfibril angle of spruce. The microfibril angle is defined as an inclination of microfibrils from the longitudinal axis, the direction of lumens. It is well known and further supported by the present study that the microfibril angle has a great influence on the final mechanical properties of wood. This angle could be measured either directly using, e.g. polarisation microscopy, X-ray diffraction, infrared spectroscopy, or indirectly, as used in this study, by employing the nanoindentation measurements. Therein, the measured indentation modulus is compared with that obtained numerically using the anisotropic theory of indentation. The latter one depends on the entire stiffness matrix derived through homogenization and the searched microfibril angle. In view of the cell wall microstructure, the effective cell properties were found using the two-step micromechanical homogenization adopting both the Self-consistent and Mori-Tanaka methods.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20502 - Paper and wood

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

Acta Polytechnica CTU Proceedings

ISBN

978-80-01-06346-0

ISSN

2336-5382

e-ISSN

—

Počet stran výsledku

4

Strana od-do

71-74

Název nakladatele

Czech Technical University in Prague

Místo vydání

Prague

Místo konání akce

Prague

Datum konání akce

21. 9. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000433365100013