Alternative Possibilities of Biaxial Testing of Fiber And Fabric Materials in Nonstandard Conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F17%3A00004449" target="_blank" >RIV/46747885:24620/17:00004449 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Alternative Possibilities of Biaxial Testing of Fiber And Fabric Materials in Nonstandard Conditions

Popis výsledku v původním jazyce

The commonly used static uniaxial tensile tests don`t describe the properties of materials based on fibers sufficiently therefore a biaxial test has been utilized. An important requirement is to conduct the test also at significantly higher speeds and under various climatic conditions; due to sensitivity of fibrous materials to climatic influences, in particular temperature and humidity. This is for existing testing devices point where we encounter two significant insufficiencies. Firstly they have limited speed and maximal loading force. Secondly, their use for testing under extreme climatic conditions is almost impossible due to their usually electronic control. The aim of this work was to propose appropriate experimental facilities using only two engines instead of the usually required four that would be able to work at higher speed, under climatic loading and in limited space. Based on these findings a testing mechanism that can be placed in an external box of climate chambers connected to a laboratory hydrodynamic-circuit has been created. This method utilizes a sliding displacement of the jaws controlled with inner forces in a tested sample and four springs. Increased sensitivity of fibrous materials to the speed of strain and climatic conditions were detected during following experiments. Compared with other used tests, the concept seems to be sufficiently precise.

Název v anglickém jazyce

Alternative Possibilities of Biaxial Testing of Fiber And Fabric Materials in Nonstandard Conditions

Popis výsledku anglicky

The commonly used static uniaxial tensile tests don`t describe the properties of materials based on fibers sufficiently therefore a biaxial test has been utilized. An important requirement is to conduct the test also at significantly higher speeds and under various climatic conditions; due to sensitivity of fibrous materials to climatic influences, in particular temperature and humidity. This is for existing testing devices point where we encounter two significant insufficiencies. Firstly they have limited speed and maximal loading force. Secondly, their use for testing under extreme climatic conditions is almost impossible due to their usually electronic control. The aim of this work was to propose appropriate experimental facilities using only two engines instead of the usually required four that would be able to work at higher speed, under climatic loading and in limited space. Based on these findings a testing mechanism that can be placed in an external box of climate chambers connected to a laboratory hydrodynamic-circuit has been created. This method utilizes a sliding displacement of the jaws controlled with inner forces in a tested sample and four springs. Increased sensitivity of fibrous materials to the speed of strain and climatic conditions were detected during following experiments. Compared with other used tests, the concept seems to be sufficiently precise.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/LO1201" target="_blank" >LO1201: ROZVOJ ÚSTAVU PRO NANOMATERIÁLY, POKROČILÉ TECHNOLOGIE A INOVACE TECHNICKÉ UNIVERZITY V LIBERCI</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

ENGINEERING MECHANICS 2017, 23rd International Conference on Engineering Mechanics

ISBN

978-80-214-5497-2

ISSN

1805-8248

e-ISSN

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Počet stran výsledku

4

Strana od-do

562-565

Název nakladatele

ACAD SCI CZECH REPUBLIC, INST THERMOMECHANICS, DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC

Místo vydání

Prague

Místo konání akce

Svratka

Datum konání akce

1. 1. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000411657600130