Micromechanical properties of beech cell wall measured by micropillar compression test and nanoindentation mapping

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43917958" target="_blank" >RIV/62156489:43410/20:43917958 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1515/hf-2019-0128" target="_blank" >https://doi.org/10.1515/hf-2019-0128</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/hf-2019-0128" target="_blank" >10.1515/hf-2019-0128</a>

Result language

angličtina

Original language name

Micromechanical properties of beech cell wall measured by micropillar compression test and nanoindentation mapping

Original language description

Wood exhibits very different behavior and properties at different scales. One important scale is the cell wall (CW) that is commonly tested by nanoindentation. Common nanoindentation provides important insight into the material but has limitations because it does not apply uniaxial stress and provides data from single spots. Therefore, the aim was to examine beech CW using two state-of-the-art techniques: micropillar compression (MCo) and nanoindentation mapping (NIP). The mean strength of the beech CW was found to be about 276 MPa and the mean yield stress was 183 MPa. These values were higher than those in most cited literature, which was attributed to the fact that libriform fibers from beech late wood were measured. Mean E obtained from MCo was about 7.95 GPa, which was lower than the values obtained on a macrolevel and about 61% of the value obtained from NIP. NIP also showed that E of the CW around the middle lamella (ML) was about 64% of the value at the location attributed to the S2 layer. Lower E from MCo may be caused by sinking of the micropillar into the wood structure under the load. Failure of the micropillars showed gradual collapse into themselves, with debonding at the S3 layer or the MLs.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20502 - Paper and wood

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Holzforschung

ISSN

0018-3830

e-ISSN

—

Volume of the periodical

74

Issue of the periodical within the volume

9

Country of publishing house

DE - GERMANY

Number of pages

6

Pages from-to

899-904

UT code for WoS article

000565378100008

EID of the result in the Scopus database

2-s2.0-85079766128