Počet záznamů: 1

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

SYSNO ASEP	0475785
Druh ASEP	C - Konferenční příspěvek (mezinárodní konf.)
Zařazení RIV	D - Článek ve sborníku
Název	Visualization of the Evolution of the Fracture Process Zone in Sandstone by Transmission Computed Radiography
Tvůrce(i)	Vavro, Leona (UGN-S)_RID Souček, Kamil (UGN-S)_{RID, ORCID} Kytýř, Daniel (UTAM-F)_{SAI, RID, ORCID} Keršner, Z. (CZ) Fíla, Tomáš (UTAM-F)_{RID, SAI, ORCID} Vavro, Martin (UGN-S)_{RID, ORCID}
Celkový počet autorů	6
Zdroj.dok.	Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017. - Amsterdam : Elsevier Ltd., 2017 / Koníček P. ; Souček K. ; Konečný P. - ISSN 1877-7058
Rozsah stran	s. 689-696
Poč.str.	8 s.
Forma vydání	Online - E
Akce	ISRM European Rock Mechanics Symposium EUROCK 2017
Datum konání	20.06.2017 - 23.06.2017
Místo konání	Ostrava
Země	CZ - Česká republika
Typ akce	WRD
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	fracture process zone ; fracture toughness ; Chevron Bend (CB) test ; glauconitic sandstone ; X-ray radiography
Vědní obor RIV	DH - Báňský průmysl vč. těžby a zpracování uhlí
Obor OECD	Environmental and geological engineering, geotechnics
Vědní obor RIV – spolupráce	Ústav teoretické a aplikované mechaniky - Báňský průmysl vč. těžby a zpracování uhlí
CEP	LO1406 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	ED2.1.00/03.0082 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	GA16-18702S GA ČR - Grantová agentura ČR
	GA15-07210S GA ČR - Grantová agentura ČR
Institucionální podpora	UGN-S - RVO:68145535 ; UTAM-F - RVO:68378297
UT WOS	000416996000088
EID SCOPUS	85022025539
DOI	10.1016/j.proeng.2017.05.233
Anotace	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.
Pracoviště	Ústav geoniky
Kontakt	Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354
Rok sběru	2018
Elektronická adresa	http://www.sciencedirect.com/science/article/pii/S1877705817323731

Počet záznamů: 1