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Ahmadreza Hedayat
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Proceedings Papers

Dry and Fluid Permeated Hydraulic Fractures and Their Geophysical Signatures in Granitic Rocks

Awais Butt, Ahmadreza Hedayat, Omid Moradian
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0406
DOI: https://doi.org/10.56952/ARMA-2022-0406
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View Paper titled, Dry and Fluid Permeated Hydraulic Fractures and Their Geophysical Signatures in Granitic Rocks
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Proceedings Papers

Characterization of Fracture Process Zone in Short Beam Compression Tests on Barre Granite

Prasoon Garg, Ahmadreza Hedayat, D. V. Griffiths
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0466
DOI: https://doi.org/10.56952/ARMA-2022-0466
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View Paper titled, Characterization of Fracture Process Zone in Short Beam Compression Tests on Barre Granite
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Proceedings Papers

Energy Partitioning During Fracturing in Granite Under Stress Relaxation

Sana Zafar, Ahmadreza Hedayat, Omid Moradian
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0548
DOI: https://doi.org/10.56952/ARMA-2022-0548
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View Paper titled, Energy Partitioning During Fracturing in Granite Under Stress Relaxation
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Proceedings Papers

Understanding the Mode I Fracture Behaviors of the Geopolymer Made by Alkaline Activation of Gold Mine Tailings

Nan Zhang, Ahmadreza Hedayat, Ammad Khan, Prasoon Garg, Sosa Bolaños, Gelber Héctor
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1427
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View Paper titled, Understanding the Mode I Fracture Behaviors of the Geopolymer Made by Alkaline Activation of Gold Mine Tailings
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Proceedings Papers

Evaluation of Tensile Strength and Failure Response of Geopolymerized Rock Waste Using Brazilian Tensile Test

Ammad Khan, Nan Zhang, Ahmadreza Hedayat, Bolaños Sosa, Héctor Gelber
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1795
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View Paper titled, Evaluation of Tensile Strength and Failure Response of Geopolymerized Rock Waste Using Brazilian Tensile Test
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Proceedings Papers

Acoustic Emission Source Mechanisms Evaluation of Hydraulically Induced Fractures in Brittle Rocks

Awais Butt, Ahmadreza Hedayat, Omid Moradian
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1801
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View Paper titled, Acoustic Emission Source Mechanisms Evaluation of Hydraulically Induced Fractures in Brittle Rocks
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Proceedings Papers

Laboratory Investigation of Stress Relaxation in Brittle Rocks Using Acoustic Emission and Digital Image Correlation

Sana Zafar, Ahmadreza Hedayat, Omid Moradian
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1965
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View Paper titled, Laboratory Investigation of Stress Relaxation in Brittle Rocks Using Acoustic Emission and Digital Image Correlation
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Proceedings Papers

Investigation of Fracture Process Zone in Barre Granite Under Mode II Loading

Prasoon Garg, Ahmadreza Hedayat, D. V. Griffiths
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2047
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View Paper titled, Investigation of Fracture Process Zone in Barre Granite Under Mode II Loading
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Proceedings Papers

Machine Learning for Locating Acoustic Emissions From Single-Station Observations of Brittle Cracking in Rocks

Omid Moradian, Sana Zafar, Ahmadreza Hedayat
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2031
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View Paper titled, Machine Learning for Locating Acoustic Emissions From Single-Station Observations of Brittle Cracking in Rocks
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Proceedings Papers

Fracture and Failure Processes of Geopolymerized Mine Tailings under Uniaxial Compression

Nan Zhang, Ahmadreza Hedayat, Héctor Gelber Bolaños Sosa, Juan José González Cárdenas, Guido Edgard Salas Alvarez, Victor Ascuña Rivera, Jessica González
Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1923
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View Paper titled, Fracture and Failure Processes of Geopolymerized Mine Tailings under Uniaxial Compression
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Proceedings Papers

Acoustic Emission Monitoring of Progressive Damage in Prismatic Barre Granite Rocks with an Existing Flaw

Sana Zafar, Ahmadreza Hedayat, Omid Moradian
Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1929
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View Paper titled, Acoustic Emission Monitoring of Progressive Damage in Prismatic Barre Granite Rocks with an Existing Flaw
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Proceedings Papers

Evaluation of Progressive Damage in Barre Granite using Ultrasonic Velocity Tomography and Digital Image Correlation

Awais Butt, Ahmadreza Hedayat, Erika Tudisco, Hamid Roshan
Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1579
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View Paper titled, Evaluation of Progressive Damage in Barre Granite using Ultrasonic Velocity Tomography and Digital Image Correlation
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Proceedings Papers

Numerical Simulation of Fracture Initiation in Barre Granite using an Experimentally Validated XFEM Model

Prasoon Garg, Ahmadreza Hedayat, D. V. Griffiths
Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1903
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View Paper titled, Numerical Simulation of Fracture Initiation in Barre Granite using an Experimentally Validated XFEM Model
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Proceedings Papers

Ultrasonic Precursors to Shear Failure of Rock Joints in Gosford Sandstone with Rough Contact Surfaces

Amin Gheibi, Ahmadreza Hedayat
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0354
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View Paper titled, Ultrasonic Precursors to Shear Failure of Rock Joints in Gosford Sandstone with Rough Contact Surfaces
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Proceedings Papers

Coupled Ultrasonic and Digital Imaging of Crack Initiation and Growth in Prismatic Lyon Sandstone Rocks

Prasoon Garg, Deepanshu Shirole, Ahmadreza Hedayat, D. V. Griffiths
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0366
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View Paper titled, Coupled Ultrasonic and Digital Imaging of Crack Initiation and Growth in Prismatic Lyon Sandstone Rocks
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Proceedings Papers

Applicability of Ultrasonic Tomographic Technique for Progressive Damage Evaluation in Prismatic Rock Specimen

Awais Butt, Cara Fragomeni, Ahmadreza Hedayat, Erika Tudisco
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0447
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View Paper titled, Applicability of Ultrasonic Tomographic Technique for Progressive Damage Evaluation in Prismatic Rock Specimen
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Proceedings Papers

Stress and Deformation Analysis of Circular Tunnels With Consideration of Blast-Induced Damage and Gravity

Ahmadreza Hedayat, Jacob Weems, Hamid Roshan
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-253
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View Paper titled, Stress and Deformation Analysis of Circular Tunnels With Consideration of Blast-Induced Damage and Gravity
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Proceedings Papers

A Non-Linear Ultrasonic Method for Damage Characterization in a Shaly Sandstone

Deepanshu Shirole, Gabriel Walton, A. Lev Ostrovsky, Masoumi Hossein, Ahmadreza Hedayat
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-795
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View Paper titled, A Non-Linear Ultrasonic Method for Damage Characterization in a Shaly Sandstone
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Proceedings Papers

Ultrasonic Investigation of Friction Processes in Granular Gouge Materials

Amin Gheibi, Sydney Slouka, Ahmadreza Hedayat
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1177
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View Paper titled, Ultrasonic Investigation of Friction Processes in Granular Gouge Materials
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Proceedings Papers

Geophysical Imaging of Frictional Contacts and Processes in Shaly Sandstone Rock Joints

Luis E. Aragón, Amin Gheibi, Hossein Masoumi, Ahmadreza Hedayat
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1038
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View Paper titled, Geophysical Imaging of Frictional Contacts and Processes in Shaly Sandstone Rock Joints
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