About: Experimental investigation of acoustic emissions and their moment tensors in rock during failure

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We study acoustic emissions (AEs) associated with shear and tensile failures around a horizontal borehole in a sandstone sample subjected to triaxial stress. The aim is to relate the AE event rate to macroscopic observations of sample deformation and the percentage of isotropic and deviatoric components of the seismic moment tensors to the expected failure mechanisms. The horizontal hole interferes with the applied load and forms a strongly spatially dependent anisotropic stress fi eld, focusing the crack initiation into both shear and tensile failures. The recorded AEs follows reasonably well existing damage models, but the elastic solution of hoop stress does not represent the onset of failure around the borehole. The focal mechanisms correlate with the orientation of macroscopic fractures in the sample. Events close to the borehole show a higher fraction of isotropic percentage in moment tensors compared to events occurring in the macroscopic fracture featuring higher double-couple percentages. We study acoustic emissions (AEs) associated with shear and tensile failures around a horizontal borehole in a sandstone sample subjected to triaxial stress. The aim is to relate the AE event rate to macroscopic observations of sample deformation and the percentage of isotropic and deviatoric components of the seismic moment tensors to the expected failure mechanisms. The horizontal hole interferes with the applied load and forms a strongly spatially dependent anisotropic stress fi eld, focusing the crack initiation into both shear and tensile failures. The recorded AEs follows reasonably well existing damage models, but the elastic solution of hoop stress does not represent the onset of failure around the borehole. The focal mechanisms correlate with the orientation of macroscopic fractures in the sample. Events close to the borehole show a higher fraction of isotropic percentage in moment tensors compared to events occurring in the macroscopic fracture featuring higher double-couple percentages. (en)
Title	Experimental investigation of acoustic emissions and their moment tensors in rock during failure Experimental investigation of acoustic emissions and their moment tensors in rock during failure (en)
skos:prefLabel	Experimental investigation of acoustic emissions and their moment tensors in rock during failure Experimental investigation of acoustic emissions and their moment tensors in rock during failure (en)
skos:notation	RIV/67985530:_____/14:00430243!RIV15-GA0-67985530
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP210/12/1491)
http://linked.open...iv/cisloPeriodika	September
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Vavryčuk, Václav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Geofyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	15837
http://linked.open...ai/riv/idVysledku	RIV/67985530:_____/14:00430243
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	acoustic emissions; focal mechanisms; moment tensors; rock fracturing; hoop stresses; laboratory experiment (en)
http://linked.open.../riv/klicoveSlovo	focal mechanisms acoustic emissions laboratory experiment moment tensors hoop stresses rock fracturing
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[0B48BF4AE750]
http://linked.open...i/riv/nazevZdroje	International Journal of Rock Mechanics and Mining Sciences
http://linked.open...in/vavai/riv/obor	DC
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Physical processes in an earthquake source: from micro- to macro-scale
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	70
http://linked.open...iv/tvurceVysledku	Vavryčuk, Václav Kühn, D. Aker, E. Oye, V. Soldal, M.
http://linked.open...ain/vavai/riv/wos	000341365900029
issn	1365-1609
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.ijrmms.2014.05.003

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