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Keywords: amplitude
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Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-069
... engineering frequency graph ultrasonic non-destructive digital indicating tester environmental science 833 amplitude geologist limestone crystallisation practice iop publishing iop conf theory procedure geotron instrument pundit Mechanics and Rock Engineering, from Theory to Practice IOP...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-105
... circulation system with three wells in the target reservoir, after stimulations in PX-2 and PX-1. Upstream Oil & Gas Reservoir Characterization stress ratio stimulation geothermal reservoir px-2 well amplitude Injection Rate hydraulic stimulation orientation MPa stimulation data...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-089
... of characteristic functions calculated from squared amplitudes. Waveform stacking and coherence techniques are adapted to detect and locate AE signals for massive datasets with extremely high sampling. We significantly increase the detection rate in comparison to trigger mode routines. Most detection concentrated...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-129
... to check the response of quarries beneath the underground quarries. Reservoir Characterization underground quarry Oya tuff stability Upstream Oil & Gas seismic response numerical analysis sinusoidal velocity wave quarry amplitude velocity wave oya tuff underground quarry plane view...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-146
... loading was found as a function of the applied load for the first time in the literature (Erarslan &Williams 2012).A reduction in the fracture toughness measured under static loading of up to 46% was observed for the highest amplitude increasing cyclic loading test.The reduction in fracture toughness...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-008
... Earthquake historic monument DDA time step size masonry structure Keystone numerical analysis amplitude seismically propagation Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Seismic...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-105
... topography. The rock slope is subjected to several harmonic signals with variable frequency and amplitude, and the slope response is evaluated. 1 INTRODUCTION Subduction of the Nazca plate under the South American plate is responsible of numerous earthquakes due to the stress accumulation and relief...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-095
... metals & mining strength Reservoir Characterization Engineering damage variable rock fatigue damage Wellbore Design cyclic loading amplitude rock material deformation Adelaide loading loading condition fatigue damage fatigue life Upstream Oil & Gas rock fatigue behavior...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-130
... reservoir geomechanics splitting tensile strength variation tensile failure behavior Brazilian splitting test Engineering acoustic emission ringdown count room temperature cumulative ringdown count Upstream Oil & Gas microscopic structure sandstone amplitude sub-zero temperature tensile...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-131
... on carbide metal and polycrystalline diamond cutting tools with geometrically defined cutting edges. The ultrasonic frequency was maintained at 20 kHz. Different oscillation amplitudes up to 25 µm were applied to reduce process forces in comparison to the conventional machining. The observation...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-158
... a brief theoretical description on ground vibrations sources with emphasis on rockfalls, while typical equations on the estimation of ground vibration amplitude and signal attenuation are also provided. Section 3 presents the experimental setup and the algorithm developed for rockfall event iden...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-156
... and composed of numerous alternating movements with different frequencies and amplitudes move in cycles (Sashourin 2001). Upstream Oil & Gas kazchrome donskoy ore mining Reservoir Characterization frequency movement process metals & mining structural geology displacement amplitude...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-013
... in dimensionless variables, like roughness slope and there is a lack of information in these models.A new original limit equilibrium model of strain energies that integrates linear parameters as roughness amplitude is introduced. It solves most problems of the classical models because it uses energies...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-029
...) were recorded at fre- quency 500 Hz with a single-channel AE system sam- pling acoustic peak amplitudes (APK, dB) using a passive AE sensor ranging from 100 450 kHz. Due to the fact that test duration differs significantly depend- ing on orientation of the schistose planes to loading the cumulative...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-006
... Oscillation amplitude evaluation Artificial Intelligence anchor length input parameter application optimization problem geomechanics coefficient amplitude material parameter foundation plate Upstream Oil & Gas Rock mechanics roof settlement tensile stress sensitivity analysis algorithm...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-038
... Wellbore Design ii cyclic loading Brisbane Tuff loading Reservoir Characterization Upstream Oil & Gas brazilian disc specimen amplitude type II hydraulic fracturing disc specimen specimen reduction reservoir geomechanics indirect tensile strength tensile strength cyclic...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-113
... magnitudes of vibration at any site that is to be protected. An important factor of dealing with vibrations and their effects is the definition of three categories, which are (according to Sarsby, 2000): Reservoir Characterization correlation amplitude expression Upstream Oil & Gas...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-102
... into the calculation the stochastic character of the input parameters. In the first example the stochastic character of shear strength characteristics of soils is considered. The second example takes into account the stochastic character of the basic parameters of dynamic load (frequency and amplitude of the dynamic...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-113
... level and constant amplitude, termed sinusoidal cyclic loading, and (b) cyclic loading with increasing mean level and constant amplitude, termed increasing cyclic loading. The fracture toughness response to cyclic loading was found to be different from that under static loading in terms of the ultimate...

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