Analysis of Mini-jack technique for in situ measurement of strength

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F17%3A43911985" target="_blank" >RIV/62156489:43410/17:43911985 - isvavai.cz</a>

Alternative codes found

RIV/68378297:_____/17:00477194

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Analysis of Mini-jack technique for in situ measurement of strength

Original language description

The paper presents a recently developed diagnostic technique for in situ determination of modulus of deformability (MODL) and conventional strength (CSL) parallel to the grain using the mini-jack inserted in bored hole. The mini-jack compression technique simulates the standard compression test, it is compared to that to examine its prediction strength (correlation coefficients). The paper shows an influence of moisture content of wood on experimental measurements using this technique. The measurement was carried out at spruce samples at three moisture contents of 12, 18 and 24%. The results of the tests prove a very good correlation of the strength determined by the proposed technique and wood density and strength determined at universal testing machine in compression parallel to the grain. The effect of the moisture content on the measurement by the mini-jack technique was proved to be significant. Beside that, the newly-developed instrument was also studied using digital image correlation (DIC) technique to analyze induced strains around the bored hole. This was studied on halved spruce samples. The DIC revealed symmetric character of the loading and significant differences between strains induced in tangential and longitudinal directions.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)

Project

<a href="/en/project/DG16P02M026" target="_blank" >DG16P02M026: Historical Timber Structures: Typology, Diagnostics and Traditional Wood Working</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Article name in the collection

SP Rapport. Conference Proceedings ICTB 2017

ISBN

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ISSN

0284-5172

e-ISSN

neuvedeno

Number of pages

6

Pages from-to

&quot;Nestránkováno&quot;

Publisher name

Research Institutes of Sweden

Place of publication

Borås

Event location

Skellefteå

Event date

Jun 26, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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