Visualization of the Evolution of the Fracture Process Zone in Sandstone by Transmission Computed Radiography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F17%3A00475785" target="_blank" >RIV/68378297:_____/17:00475785 - isvavai.cz</a>

Alternative codes found

RIV/68145535:_____/17:00475785 RIV/00216305:26110/17:PU127153

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S1877705817323731" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1877705817323731</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2017.05.233" target="_blank" >10.1016/j.proeng.2017.05.233</a>

Result language

angličtina

Original language name

Visualization of the Evolution of the Fracture Process Zone in Sandstone by Transmission Computed Radiography

Original language description

The article deals with the use of computed X-ray radiography to visualize the development of the fracture process zone in the rock samples. For radiographic observations during the three-point bending loading, glauconitic sandstone from the Řeka quarry (sometimes also referred to as Godula sandstone) was used. The chevron-notched cylindrical specimens with the diameter of 29 mm and 120 mm nominal length were prepared from the sandstone blocks. These specimens were subjected to the Chevron Bend (CB) test carried out in accordance with the ISRM suggested methodology the span was 94 mm. The evolution of the fracture process zone was continuously scanned using X-ray radiography during the realized Mode I fracture toughness tests (FTT). The scanning was conducted using an industrial X-ray micro-tomographic inspection system equipped with a flat panel X-ray detector of 4,000 × 4,000 pixels and micro-focus X-ray source with reflection target, which are very suitable for obtaining highly detailed radiographic images during the FTT tests. Three-point bending tests were carried out using an in-house designed table-top loading device, construction of which allows precise control of the loading during testing. Continuous X-ray examination and subsequent radiographic image analysis enable investigation of the crack initiation and the process zone development during FTT and represents a useful tool for a better understanding of failure behavior of the rock material during the loading process.

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

20701 - Environmental and geological engineering, geotechnics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

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

Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017

ISBN

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ISSN

1877-7058

e-ISSN

—

Number of pages

8

Pages from-to

689-696

Publisher name

Elsevier Ltd.

Place of publication

Amsterdam

Event location

Ostrava

Event date

Jun 20, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000416996000088