• Magnet Technology Demonstration for an Ignition, Single-Turn Tokamak 

      Werst, M.D.; Brunson, G.W.; Hsieh, K.T.; Sledge, R.L.; Wehrlen, D.J.; Weldon, W.F.; Woodson, H.H. (American Nuclear Society, 1991-05)
      The Center for Electromechanics at The University of Texas at Austin (CEM-UT) has designed, built, and is now testing a full torus, single-turn magnet designed to produce 20 Tesla (T) on-axis. The Ignition Technology ...
    • Magnetic Field Diffusion in Fast Discharging Homopolar Machines 

      Driga, M.D.; Becker, E.B.; Pillsbury, R.D.; Weldon, W.F.; Rylander, H.G.; Woodson, H.H. (Hemisphere Publishing Corporation, 1977)
      The unusually high mechanical and thermal stresses occuring in fast discharging homopolar machines require accurate prediction of high magnetic fields accompanying their operation. Linear methods and ideal configurations ...
    • Magnetic Field Stimulation - the Brain as a Conductor 

      Davey, K.R.; (, undated)
      The brain is an inhomogeneous conductor consisting of white matter, grey matter, and cerebral spinal fluid with conductivities, 0.48 S/m, 0.7 S/m, and 1.79 S/m respectively. The skull is essentially a zero current density ...
    • Magnetic materials for high rotational velocity machines: a fresh look at an old problem 

      Wilder, A.T.; (, undated)
      The diameter and speed of rotors in electromagnetic machines are limited by materials. Machines having high tip-speed rotors demand materials performance in both magnetic and mechanical behaviors. As a result, soft magnetic ...
    • Manufacturing and Testing of an Air-Core Compulsator Driven 0.60 Caliber Railgun System 

      Kitzmiller, J.R.; Faidley, R.W.; Headifen, R.N.; Fuller, R.L.; Thelen, R.F. (IEEE, 1993-01)
      A laboratory-based, small-caliber, electromagnetic launcher and compensated pulsed alternator power supply are being tested. The objective of the program is to develop a compact, lightweight testbed capable of accelerating ...
    • Measurement and Prediction of Brush Interface Temperature at Sliding Electrical Contacts 

      Liu, H-P.; Carnes, R.W.; Gully, J.H. (IEEE, 1992-10)
      Binderless copper-graphite composite electrical brushes have been fabricated with a high-energy and high-rate pulse sintering technique. Experiments were conducted to measure the interface contact spot temperatures of ...
    • Measurement of Windage Losses and Temperature Distribution for a High Speed Composite Rotor in a Stator Assembly at Low Air Pressures 

      Hahne, J.J.; Werst, M.D.; Penney, C.E.; Liu, H-P.; O’Rarden, J.; Bogard, D. (American Society of Mechanical Engineers, 2003-07)
      With the advancements in composite technology several innovative applications present themselves that involve high-speed composite rotors spinning in a stator assembly. As rotational speeds and rotor tip speeds increase, ...
    • Micrometeroid Impact Simulations Using a Railgun Electromagnetic Accelerator 

      Upshaw, J. L.; Kajs, J. P. (IEEE, 1991-01)
      A railgun electromagnetic (EM) accelerator was used to conduct a series of hypervelocity micrometeoroid impact simulations. The tests were designed to demonstrate that railguns can provide a repeatable means of accelerating ...
    • Modeling and Evaluation of a Plug In Hybrid Fuel Cell Shuttle Bus 

      Hearn, C.S.; Lewis, M.C.; Thompson, R.C.; Longoria, R.G. (IEEE, 2009-09)
      The Center for Electromechanics at The University of Texas at Austin acquired a plug-in hybrid fuel cell bus for demonstration and model development under a program funded through the USDOT-FTA. The purpose of this program ...
    • Modeling and Simulation of Electric Ships’ Power System Components and Their Interaction 

      Ouroua, A.; Jackson, J.R.; Beno, J.H.; Thompson, R.C.; Schroeder, E. (Society for Computer Simulation International, 2007)
      Models of propulsion motors, generators, gas turbines, and power converters are used to determine weights and volumes, evaluate designs, and predict performance of power system components for all-electric navy ships. The ...
    • Modeling and Simulation Roadmap to Enhance Electrical Energy security of U.S. Naval Bases 

      Hebner, R.E.; Herbst, J.D.; Gattozzi, A.L.; Uriarte, F.M. (Office of Naval Research, 2012-04)
      The enhancement of the electrical energy security of Navy bases within the continental U.S. has been studied using an approach based on modeling and simulation, with the intent to achieve real time control and energy ...
    • Modeling of Electric Ship Power Systems 

      Ouroua, A.; Murphy, B.; Herbst, J.; Hebner, R. (Society for Modeling & Simulation International, 2009)
      The central element of a ship power system model is typically a circuit model. This level of modeling has been valuable in evaluating architectures for future electric ships as it provides initial power flow and stability ...
    • Modeling of Flexible Rotor Machines Supported with Hydrostatic Bearings 

      Headifen, R.N.; Weldon, W.F. (American Society of Mechanical Engineers, 1993-05)
      In this paper a method is described that takes the nonlinear dynamic stiffness and damping coefficients for multiple hydrostatic bearings and incorporates them into a rotordynamic FEM model for a rotating machine. A ...
    • Modeling of Multiple Liner Containment Systems for High Speed Rotors 

      Dulaney, K.A.; Beno, J.H.; Thompson, R.C. (IEEE, 1999-01)
      High speed composite rotors typically require containment structures to protect personnel and equipment from high energy rotor material and fragments that result from rotor burst events, which may occur during rotor ...
    • Modeling the effects of electrical conductivity of the head on the induced electric field in the brain during magnetic simulation 

      Davey, K.R.; Epstein, C.M.; George, M.S.; Bohning, D.E. (Elsevier, 2003-11)
      Objective: The objective of this document is to quantify the effect of changing conductivity within the brain in transcranial magnetic stimulation. Methods: Extreme examples of white and grey matter distributions as well ...
    • Modeling the growth of streamers during liquid breakdown 

      Hebner, R.E.; Kim, M.; Hallock, G.A. (IEEE, 2008-04)
      Earlier work by Fowler, Davaney, and Hagedorn showed that the morphology of an anode streamer could be modeled as stochastic growth of a branching fractal tree in point-plane geometry. This investigation reproduces the ...
    • Monitoring of Defects in Induction Motors Through Air-Gap Torque Observation 

      Hsu, J.S.; (IEEE, 1995-09)
      This paper suggests a method to monitor defects such as cracked rotor bars and the shorted stator coils in induction motors. Air-gap torque can be calculated while the motor is running. No special down time for measurement ...
    • A Moving Boundary Diffusion Model for PIN Diodes 

      Zhang, H.; Pappas, J.A. (IEEE, 2001-01)
      A large number of diode models exist that simulate the reverse recovery process. Many models assume an abrupt change of current during reverse recovery. Some models were verified by calculating the diode's response after ...
    • Multicore Methods to accelerate Ship Power System Simulations 

      Uriarte, F.M.; Dufour, C. (IEEE, 2013-04)
      Two methods to partition and parallelize the simulation of large-scale shipboard power systems on multicore computes are demonstrated. The first method is node tearing, which is used for offline simulation. The second is ...
    • Multicore simulation of an ungrounded power system 

      Uriarte, F.M.; (The Institution of Engineering and Technology, 2011-03)
      An approach to partition power system simulations formulated in mesh currents as variables is presented. Time-domain simulations of large-scale power systems are notoriously slow owing to the system order and amount of ...