A5006436926- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Nuclear Physics and Applications
- Hydrocarbon exploration and reservoir analysis
- Seismic Imaging and Inversion Techniques
- Reservoir Engineering and Simulation Methods
- Geophysical Methods and Applications
- Oil and Gas Production Techniques
- Additive Manufacturing and 3D Printing Technologies
- Electronic Packaging and Soldering Technologies
- Enhanced Oil Recovery Techniques
- Tunneling and Rock Mechanics
- Particle accelerators and beam dynamics
- CO2 Sequestration and Geologic Interactions
- Offshore Engineering and Technologies
- Ultrasonics and Acoustic Wave Propagation
- Geothermal Energy Systems and Applications
- Manufacturing Process and Optimization
- Sensor Technology and Measurement Systems
- Smart Grid Security and Resilience
- Magnetic Field Sensors Techniques
- Spacecraft and Cryogenic Technologies
- High-pressure geophysics and materials
- Innovations in Concrete and Construction Materials
- Petroleum Processing and Analysis
Oak Ridge National Laboratory
2015-2025
Government of the United States of America
2023
Lawrence Berkeley National Laboratory
2023
National Technical Information Service
2009-2022
Office of Scientific and Technical Information
2009-2022
Fermi National Accelerator Laboratory
2020
Knoxville College
2020
University of Tennessee at Knoxville
2020
University of Wisconsin–Madison
2020
Sandia National Laboratories California
2008-2014
Abstract Understanding mechanisms controlling fluid injection-triggered seismicity is key in defining strategies to ameliorate it. Recent triggered events (e.g. Pohang, Mw 5.5) have exceeded predictions of average energy release by a factor >1000x, necessitating robust methodologies both define critical antecedent conditions and thereby constrain anticipated event size. We maximum magnitudes resulting from triggering as function pre-existing stresses injection volume. Fluid experiments on...
Fracture injection/shut-in tests are commonly used to measure the state of stress in subsurface. Injection creates a hydraulic fracture (or some cases, opens preexisting fracture), and then pressure after shut-in is monitored identify closure. Different interpretation procedures have been proposed for estimating closure, sometimes yield significantly different results. In this study, direct, in-situ strain measurements observe reopening The were performed as part EGS Collab project,...
Electrical utility substations are wired with intelligent electronic devices (IEDs), such as protective relays, power meters, and communication switches. Substation engineers commission these IEDs to assess the appropriate measurements for monitoring, control, protection, applications. Like real electrical substations, complex substation grid test beds (ESGTs) need be assessed measuring current voltage signals in control (synchro check), applications that limited by small measurement...
Drilling costs are significantly influenced by bit performance when drilling in offshore formations. Retrieving and replacing damaged downhole tools is an extraordinarily expensive time-intensive process, easily costing several hundred thousand dollars of rig time plus the cost components. Dynamic behavior drill string can be particularly problematic high strength rock, where risk failure increases dramatically. Many these dysfunctions arise due to interaction between forces developed at...
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In this study, we examine the efficacy of repurposing natural gas (NG) pipelines for transporting hydrogen blends (with NG), ammonia, and CO2 (gaseous supercritical) from standpoint materials compatibility. Some information pertaining to component performance is also included, especially those components critical pressurization monitoring flow. A listing pipeline was developed, their compatibilities assessed each fluid or type based on known compatibilities. Results indicate that should be...
Current trends in the electronic packaging industry are directed at miniaturization of component size and increasing density on printed wiring board assemblies (PWBAs). The trend is also towards manufacture thin boards (PWBs). Developing such technologies creates heightened issues with warpage, which lead to misregistration during automated placement insertion processes. In addition, daily usage may induce PWBA warpage that could further reliability as premature solder joint failures caused...
One-sided non-destructive evaluation (NDE) is widely used to inspect materials, such as concrete structures in nuclear power plants (NPP). A method for one-sided NDE the synthetic aperture focusing technique (SAFT). The SAFT algorithm produces reasonable results when inspecting simple structures. However, complex structures, heavily reinforced thick artifacts and hence there a need more sophisticated inversion technique. Model-based iterative reconstruction (MBIR) algorithms, which are...
Two types of bare, four layer printed wiring board (PWB) test vehicles were designed and fabricated to replicate simplified versions typical boards produced by PWB manufacturers. The subjected simulated infrared wave soldering reflow processes in a small lab-scale oven integrated with shadow Moire out-of-plane displacement measurement system. measured warpages qualitatively quantitatively analyzed at selected temperatures during the profiles. results presented compare contrast effects that...
The Oak Ridge Spallation Neutron Source comprises a 1 GeV, 1.5 MW linear accelerator followed by an accumulator ring and liquid mercury target. To manage the beam loss caused ${H}^{0}$ excited states created during ${H}^{\ensuremath{-}}$ charge-exchange injection into ring, stripper foil is located inside one of chicane dipoles. This has some interesting consequences that were not fully appreciated until power reached about 840 kW. One consequence was sudden failure system due to convoy...
All commercial nuclear power plants (NPPs) in the United States contain concrete structures. These structures provide important foundation, support, shielding, and containment functions. Identification management of aging degradation is fundamental to proposed long-term operation NPPs. Concrete NPPs are often inaccessible large volumes massively thick concrete. While acoustic imaging using synthetic aperture focusing technique (SAFT) works adequately well for thin specimens such as...
A bare, four copper layer printed wiring board with simple trace patterns was built for modeling and experimental validation purposes. In-plane elastic properties of the core materials in were measured as a function temperature. Thermoelastic lamination theory utilized to predict warpage when subjected an infrared reflow process, emphasis on studying influence thermal gradients through board, its support conditions CTE differential process. Board layers traces approximated quasi-homogeneous...
Abstract Enhanced geothermal systems seek to expand the potential for energy by engineering heat exchange within earth. A neutron radiography imaging method has been developed study of fluid flow through rock under environmental conditions found in enhanced systems. For this method, a pressure vessel suitable was designed and fabricated, modifications instrument setups were tested, multiple contrast agents algorithms tracking flow. The shown success single phase manufactured crack 3.81 cm...