The anisotropy of ultrasonic waves velocity and attenuation of migmatite samples under uniaxial loading

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F13%3A00426118" target="_blank" >RIV/67985831:_____/13:00426118 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The anisotropy of ultrasonic waves velocity and attenuation of migmatite samples under uniaxial loading
Original language description
A method of velocity anisotropy analysis based on conventional ultrasonic transmission technique is presented. Multiple transducers were used to ultrasonic sounding and monitoring of acoustic emission. A sparse network of transducers located on the rockcore 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 attenuation was performed on uniaxially loaded migmatite samples with distinct foliation. The cylindrical migmatite samples had a horizontal foliation and one of them had a pre-existed crack. The ultrasonic 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
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
47th US Rock Mechanics/Geomechanics Symposium 2013
ISBN
978-1-62993-118-0
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
1281-1290
Publisher name
Red Hook
Place of publication
New York
Event location
San Francisco
Event date
Jun 23, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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