Determination of the anisotropy of elastic waves monitored by a sparse sensor network

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10188807" target="_blank" >RIV/00216208:11310/13:10188807 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/13:00390540

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ijrmms.2012.12.020" target="_blank" >http://dx.doi.org/10.1016/j.ijrmms.2012.12.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmms.2012.12.020" target="_blank" >10.1016/j.ijrmms.2012.12.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of the anisotropy of elastic waves monitored by a sparse sensor network

Popis výsledku v původním jazyce

A method of velocity anisotropy analysis based on conventional ultrasonic transmission technique is proposed. Multiple transducers are used both to monitor acoustic emission and to measure velocities in different propagation directions. A sparse networkof transducers located on the rock core surface allows approximation of elastic waves velocity distribution as an ellipsoidal surface. The shape and orientation of velocity ellipsoid is a measure of velocity anisotropy. A study of changes in velocity anisotropy and its orientation was performed on uniaxially loaded migmatite rock samples with distinct foliation. The velocity measurement was carried out during applying a uniaxial constant strain-rate loading. Orientation of the velocity ellipsoid corresponded to the anisotropy of rock structure up to activation of a failure plane. Prior to brittle failure, the axis of minimum velocity rotated from its initial direction normal to the foliation to a direction normal to the failure surface.

Název v anglickém jazyce

Determination of the anisotropy of elastic waves monitored by a sparse sensor network

Popis výsledku anglicky

A method of velocity anisotropy analysis based on conventional ultrasonic transmission technique is proposed. Multiple transducers are used both to monitor acoustic emission and to measure velocities in different propagation directions. A sparse networkof transducers located on the rock core surface allows approximation of elastic waves velocity distribution as an ellipsoidal surface. The shape and orientation of velocity ellipsoid is a measure of velocity anisotropy. A study of changes in velocity anisotropy and its orientation was performed on uniaxially loaded migmatite rock samples with distinct foliation. The velocity measurement was carried out during applying a uniaxial constant strain-rate loading. Orientation of the velocity ellipsoid corresponded to the anisotropy of rock structure up to activation of a failure plane. Prior to brittle failure, the axis of minimum velocity rotated from its initial direction normal to the foliation to a direction normal to the failure surface.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DC - Seismologie, vulkanologie a struktura Země

OECD FORD obor

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Projekt

<a href="/cs/project/GAP104%2F12%2F0915" target="_blank" >GAP104/12/0915: Kvantitativní analýza deformačních struktur křemene ovlivňujících vznik ASR v betonu</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

International Journal of Rock Mechanics and Minings Sciences

ISSN

1365-1609

e-ISSN

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Svazek periodika

60

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

208-216

Kód UT WoS článku

000317802000022

EID výsledku v databázi Scopus

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