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Laboratory Earthquake Analysis (2019-2020)
Laboratory Earthquake Analysis (2019-2020)
Description: Laboratory acoustic emission (AE) experiments play a key role in understanding earthquake systematics in downscaled physical analogs of the fault systems. With an interest in understanding deformation and failure for earthquake and volcanic systems, this system was developed. The development consisted of assembly design, acquisition setup, signal acquisition and processing, and further post-acquisition ML processing of acquired seismic data streams.
Hydraulic Fracturing Mechanics (2014-2019)
Hydraulic Fracturing Mechanics (2014-2019)
Description: Hydraulic fracturing (fracking) has been playing a key role in hydrocarbon production from naturally-fractured shale gas reservoirs within the U.S. and around the globe. What happens as this hydraulic fracture travels towards these natural fractures:
1 - Does it cross the natural fractures or becomes arrested?
2 - How much does it help the hydrocarbon flow towards the production well?
3 - What is the seismic signature of this interaction?
I developed a physical model coupled with a numerical model trying to answer these questions.
Micro-scale poroelastic properties (2018-2019)
Micro-scale poroelastic properties (2018-2019)
Description: Can we obtain romatrix permeability in the micron-scale? The short answer is "maybe yes", and meticulous studies pave the way to reach this goal.
End of the Lunar Dynamo (2016-2019)
End of the Lunar Dynamo (2016-2019)
Description: Magnetic measurements of the lunar crust and Apollo samples indicate that the Moon generated a dynamo magnetic field lasting from at least 4.2 until <2.5 billion years (Ga) ago. However, it has been unclear when the dynamo ceased.
Combined with previous paleointensity estimates, our study indicates that the lunar dynamo likely ceased sometime between ~1.92 and ~0.80 Ga ago. The protracted lifetime of the lunar magnetic field indicates that the late dynamo was likely powered by crystallization of the lunar core.
Upscaling the Mechanical Properties (2018-2019)
Upscaling the Mechanical Properties (2018-2019)
Description: Rocks are extremely heterougenous at multiple scales. Can we obtain the properties of rocks at km-scale by looking at cm-size or even smaller micron-size rock specimens? I used nanoindentation to address this question for elastic and also time-dependent aspects of rock deformation across multiple scales.
How do Anisotropic Rocks Break? (2011-2014)
How do Anisotropic Rocks Break? (2011-2014)
Description: Transverse isotropic nature of shales affects their tensile strength, tensile fracture plane pattern, and tensile fracture surface itself.
Videos show the mechanical tensile (Brazilian) tests on anistopic Wolfcamp shale (recorded at 300,000 frames per second) at tilted layering orientation.
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