Acoustic emission and 4D X-ray micro-tomography for monitoring crack propagation in rocks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00598440" target="_blank" >RIV/68378297:_____/24:00598440 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68145535:_____/24:00598440 RIV/00216208:11320/24:10491991

Výsledek na webu

<a href="https://doi.org/10.1016/j.ijrmms.2024.105917" target="_blank" >https://doi.org/10.1016/j.ijrmms.2024.105917</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmms.2024.105917" target="_blank" >10.1016/j.ijrmms.2024.105917</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Acoustic emission and 4D X-ray micro-tomography for monitoring crack propagation in rocks

Popis výsledku v původním jazyce

Acoustic emission (AE) and 4D X-ray computed tomography (4D XCT) were used simultaneously to study crack initiation and propagation in two different types of quartz-rich sandstones during the four-point bending experiments. Statistical analysis of the AE response indicated the failure mechanisms and their dynamics. The characteristic changes observed in the AE response defined the timing of the bending interruptions for XCT scanning to reveal the development of the crack. It was possible to quantitatively describe the developing cracks in their dimensions and volume and relate this information to the rate of decrease in the post-peak region of the material response. It could be concluded that the combination and concurrent use of AE and XCT techniques represents a highly effective and reliable instrument for observation, description, analysis of the crack propagation process, and rock disintegration in detail at a microscale level. With regard to the specific sandstones studied, Mšené sandstone is softer, respectively, less brittle, while Kocbeře sandstone is characterised by a more brittle behaviour accompanied by an AE signal with higher amplitudes compared tonthose of Mšené.

Název v anglickém jazyce

Acoustic emission and 4D X-ray micro-tomography for monitoring crack propagation in rocks

Popis výsledku anglicky

Acoustic emission (AE) and 4D X-ray computed tomography (4D XCT) were used simultaneously to study crack initiation and propagation in two different types of quartz-rich sandstones during the four-point bending experiments. Statistical analysis of the AE response indicated the failure mechanisms and their dynamics. The characteristic changes observed in the AE response defined the timing of the bending interruptions for XCT scanning to reveal the development of the crack. It was possible to quantitatively describe the developing cracks in their dimensions and volume and relate this information to the rate of decrease in the post-peak region of the material response. It could be concluded that the combination and concurrent use of AE and XCT techniques represents a highly effective and reliable instrument for observation, description, analysis of the crack propagation process, and rock disintegration in detail at a microscale level. With regard to the specific sandstones studied, Mšené sandstone is softer, respectively, less brittle, while Kocbeře sandstone is characterised by a more brittle behaviour accompanied by an AE signal with higher amplitudes compared tonthose of Mšené.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GA23-05128S" target="_blank" >GA23-05128S: Vliv strukturních a texturních prvků na porušování transverzálně izotropních hornin zkoumaný pomocí 4D výpočetní tomografie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

International Journal of Rock Mechanics and Mining Sciences

ISSN

1365-1609

e-ISSN

1873-4545

Svazek periodika

183

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

105917

Kód UT WoS článku

001321785400001

EID výsledku v databázi Scopus

2-s2.0-85204501180