Novel device for 4-point flexural testing of quasi-brittle materials during 4D computed tomography

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F18%3A00490614" target="_blank" >RIV/68378297:_____/18:00490614 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68145535:_____/18:00490614

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-319-91989-8_5" target="_blank" >http://dx.doi.org/10.1007/978-3-319-91989-8_5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-319-91989-8_5" target="_blank" >10.1007/978-3-319-91989-8_5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Novel device for 4-point flexural testing of quasi-brittle materials during 4D computed tomography

Popis výsledku v původním jazyce

This paper deals with development and validation of a novel device for investigation of the crack behavior in quasi-brittle materials using radiographically observed flexural testing. Instead of standard horizontal arrangement of three-point bending devices, a novel approach consisting in a vertically oriented four-point bending setup is proposed. In the paper, technical description of the proposed device together with its advantages over existing methods and results of validation experiments with natural rocks are presented. The validation experiments were concentrated on the ability of the device to capture the fracture behavior of the samples using X-ray transmission radiography and 4D X-ray micro-tomography. Particular attention was paid to evaluate the ability to perform tomographic scans during post-peak softening, i.e. on intermittent loading of samples after formation of the crack. The acquired results showed very good performance in terms of both the mechanical characteristics of the device (stiffness and loading precision) and the X-ray imaging properties.

Název v anglickém jazyce

Novel device for 4-point flexural testing of quasi-brittle materials during 4D computed tomography

Popis výsledku anglicky

This paper deals with development and validation of a novel device for investigation of the crack behavior in quasi-brittle materials using radiographically observed flexural testing. Instead of standard horizontal arrangement of three-point bending devices, a novel approach consisting in a vertically oriented four-point bending setup is proposed. In the paper, technical description of the proposed device together with its advantages over existing methods and results of validation experiments with natural rocks are presented. The validation experiments were concentrated on the ability of the device to capture the fracture behavior of the samples using X-ray transmission radiography and 4D X-ray micro-tomography. Particular attention was paid to evaluate the ability to perform tomographic scans during post-peak softening, i.e. on intermittent loading of samples after formation of the crack. The acquired results showed very good performance in terms of both the mechanical characteristics of the device (stiffness and loading precision) and the X-ray imaging properties.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Kumulativní časově závislé procesy ve stavebních materiálech a konstrukcích</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the first International conference on theoretical, applied and experimental mechanics

ISBN

978-3-319-91988-1

ISSN

2522-560X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

27-32

Název nakladatele

Springer

Místo vydání

Cham

Místo konání akce

Paphos

Datum konání akce

17. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000521737400005