Search Results - "Omid Moradian"

A novel methodology for characterizing fracture process zone evolution in Barre granite specimens under mode I loading by Garg, Prasoon, Zafar, Sana, Hedayat, Ahmadreza, Moradian, Omid Z, Griffiths, D.V.

“…•A novel DIC-based methodology was developed for characterizing the evolution of the fracture process zone in Barre granite specimens.•The size of the process…”
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Tensile strength and failure behavior of rock-mortar interfaces: Direct and indirect measurements by Ghasem Shams, Patrice Rivard, Omid Moradian

“…The tensile strength at the rock-concrete interface is one of the crucial factors controlling the failure mechanisms of structures, such as concrete gravity…”
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Revisiting Piezoelectric Sensor Calibration Methods Using Elastodynamic Body Waves by Wu, Rui, Selvadurai, Paul A., Chen, Chaojian, Moradian, Omid

“…The application of absolutely calibrated piezoelectric (PZT) sensors is increasingly used to help interpret the information carried by radiated elastic waves…”
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Moment tensor and stress inversion solutions of acoustic emissions during compression and tensile fracturing in crystalline rocks by Zihua Niu, Bing Qiuyi Li, Omid Moradian

“…We investigate the accuracy and robustness of moment tensor (MT) and stress inversion solutions derived from acoustic emissions (AEs) during the laboratory…”
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Evolution of tensile and shear cracking in crystalline rocks under compression by Zafar, Sana, Hedayat, Ahmadreza, Moradian, Omid

“…•Continuous observation of tensile and shear cracking under unconfined compression on prismatic Barre granite specimens.•Mode of deformation observed through…”
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Micromechanics of Fracture Propagation During Multistage Stress Relaxation and Creep in Brittle Rocks by Zafar, Sana, Hedayat, Ahmadreza, Moradian, Omid

“…Time-dependent rock deformation caused by the initiation and growth of fractures leads to the weakening of the rock mass. Understanding the fracturing…”
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Micro-scale Fracturing Mechanisms in Rocks During Tensile Failure by Shams, Ghasem, Rivard, Patrice, Moradian, Omid

“…Understanding the fracturing mechanisms of rock on both macro- and micro-scale is important for properly designing rock engineering applications. However,…”
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Observation of fracture process zone and produced fracture surface roughness in granite under Brazilian splitting tests by Shams, Ghasem, Rivard, Patrice, Moradian, Omid

“…•Lower loading rates lead to a larger fracture process zone in granite.•Lower loading rates lead to the generation of main fractures with rougher surfaces.•No…”
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Introducing a New Model for Prediction of Mean Cutting Forces Acting on Conical Pick Cutters by Morshedlou, Amid, Rostami, Jamal, Moradian, Omid

“…Conical pick cutters are by far the most common type of rock cutting tools used on variety of excavation equipment in mining and civil applications. Prediction…”
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Energy Budget of Brittle Fracturing in Granite Under Stress Relaxation and Creep by Zafar, Sana, Hedayat, Ahmadreza, Moradian, Omid

“…Creep and relaxation are the two major time-dependent fracturing processes in rocks. While a considerable amount of research has been done in understanding…”
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Estimation of Cutting Forces Acting on Conical Cutters Based on Rock Properties and the Contact Area Between Cutter Tip and Rock by Morshedlou, Amid, Rostami, Jamal, Moradian, Omid

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Stress Dependency of Brittle Creep in Granite: Insights into Source Mechanisms and Parameters by Zafar, Sana, Hedayat, Ahmadreza, Moradian, Omid

“…Creep in rocks refers to the gradual deformation of rock material over time under the influence of constant stress. Characterizing these deformations is of…”
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Experimental investigation on strength and failure behavior of carbonate rocks under multistage triaxial compression by Aghababaei, Mohsen, Behnia, Mahmoud, Moradian, Omid

“…Conventional or single stage triaxial compression experiments for obtaining failure envelope of rocks require several specimens to be tested under different…”
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Temporal and Spatial Evolution of Non-Elastic Strain Accumulation in Stanstead Granite During Brittle Creep by Imani, Mehrdad, Walton, Gabriel, Moradian, Omid, Hedayat, Ahmadreza

“…Understanding the long-term behavior of brittle rocks requires fundamental consideration of time-dependent strain evolution and brittle creep processes…”
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Evolution of tensile and shear cracking in crystalline rocks under compression by Zafar, Sana, Hedayat, Ahmadreza, Moradian, Omid

“…Here we performed laboratory-scale unconfined compression experiments on Barre granite specimen with a single pre-existing flaw to study the evolution of…”
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Evolution of fracture permeability and aperture during CO2 storage in varyingly cemented sedimentary rocks by Foroutan, Maziar, Ghazanfari, Ehsan, Amirlatifi, Amin, Moradian, Omid

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