Dr. Brian Murphy Muprhy

1 University Station #R7000
Austin, TX. 78712

Function: Senior Research Engineer

Dr. Murphy joined The Center for Electromechanics in 1993.  He conducts research and development in the area of high performance rotating machinery, including specialized motors, generators, and high energy flywheel battery systems.  This includes the performance of rotordynamic analysis and design and bearing and seal design analysis and design; balancing, alignment and commissioning of rotating equipment; and development of innovative solutions to challenging problems which arise in the development of state-of-the-art electromechanical prototypes.  He is also heavily involved in proposal writing and marketing to identify new business opportunities involving the research and development of high performance rotating machinery.

In addition, since 1998, Dr. Murphy has been an instructor for the VAVCO Annual Short Course on Machinery Vibration and Rotordynamics.  He teaches sessions on numerical analysis and computer modeling of rotating systems.

Prior to joining UT-CEM, Dr. Murphy was Vice President and co-founder of Rotordynamics-Seal Research, Inc. in Sacramento, California.  He performed field troubleshooting of rotating machinery using multi-channel spectrum analyzers, was involved in development, sales, and support of engineering software and manuals used for rotordynamic and related analysis of rotating machinery, and performed dynamic analysis of turbomachinery (system modeling, unbalance response, critical speeds, transient torsional start-ups, etc.).  In addition, he presented technical seminars to industrial customers, provided technical supervision of engineers and programmers, and designed/programmed Graphical User Interfaces (GUI) for RSR's engineering software programs.  He has extensive experience programming in FORTRAN, C, C++, and Visual Basic, including object oriented, event driven architectures.

Prior to founding RSR, Dr. Murphy was a technical staff member at Rocketdyne Division, Rockwell International in Canoga Park, California.  He directed and performed structural dynamic and rotordynamic research, design, analysis and testing of liquid rocket engine components, including high performance turbopumps and related test rigs; performed advanced testing of instrumentation to accurately quantify performance characteristics and identify operating limits; and devised advanced data acquisition methods and digital data processing techniques for use on aerospace test rigs, including multi-input multi-output systems.  He was lead engineer in the area of dynamics of rotating machinery and technical project manager for development of an advanced turbopump bearing test facility.  He developed computer software for performing advanced rotordynamic analysis of turbomachinery and was a key contributor on many programs, including the Space Shuttle, Star Wars, Space Station Freedom, NASP X-32 Aerospace Plane, and numerous technology advancement contracts.

Prior to that Dr. Murphy was a lecturer at California State University in Northridge, where he taught a senior level course on Machinery Dynamics and served on a Masters level graduate committee.  Before that he was a research assistant and lecturer at Texas A&M University in College Station, Texas, where he performed both basic and applied research on rotating machinery dynamics, taught an undergraduate Statics course in Mechanical Engineering and presented seminars to engineers from industry in conjunction with the Texas A&M Turbomachinery Instability Workshop.

Current Projects
* Advanced Locomotive Propulsion System: Develop and demonstrate the technologies required for an advanced passenger rail fossil-fueled locomotive propulsion system
* Electromagnetic Aircraft Launch System: Development of an electric generator for the Navy’s electromagnetic aircraft launch catapult
* Electromagnetic Gun: Development of a pulse power alternator for the electric gun program

Research Areas/Areas of Interest
* Dynamics, vibration, and control of machines and structures
* Member, American Society of Mechanical Engineers (ASME)
* Member, Vibration Institute
* Rockwell Engineering & Test Achievement Award
* Session Chair, ISMB-9 International Symposium on Magnetic Bearings, Lexington, Kentucky, 2004
* Session Chair, IFToMM-4 International Conference on Rotordynamics, Chicago, Illinois, 1994 (was unable to attend)
* Session Chair, IMechE-5 International Conference on Vibrations in Rotating Machinery, Bath, England, 1992

About Me
* Professional Engineering License 1993
* ASME Member since 1994

* Ph.D., Mechanical Engineering Structural Mechanics, Eigenvalues of Rotating Machinery, school, Texas A&M University, 1984
* B.S. , with honors, Mechanical Engineering, University of Florida, 1978

Patents Filed as Records of Invention
* Flywheel Motor Generator with Power Electronics for the Formula One Kinetic Energy Recovery System, (with Richard Thompson, Hamid Ouroua, Richard Hayes, Steve Manifold, Mark Flynn, and Clay Hearn), UT Tech ID OTC-5260-THO, submitted March 2007, pending.

Refereed Publications
* D.P. Fleming, B.T. Murphy, J. T. Sawicki and J.V. Poplawski, “Transient Response of Rotor on Rolling Element Bearings with Clearance,” 7th IFToMM Conference on Rotor Dynamics, Vienna, Austria, 25-28 September 2006.
* B.T. Murphy, A. Ouroua, M.T. Caprio, and J.D. Herbst, “Permanent magnet bias, homopolar magnetic bearings for a 130 kW-hr composite flywheel,” 9th International Symposium on Magnetic Bearings, Lexington Kentucky, U.S.A., August 3-6, 2004 (PR 364).
* M.T. Caprio, B.T. Murphy, and J.D. Herbst, “Spin commissioning and drop tests of a 130 kW-hr composite flywheel,” 9th International Symposium on Magnetic Bearings, Lexington, Kentucky, U.S.A., August 3-6, 2004 (PR 365).
* L.A. Hawkins, B.T. Murphy, J. Zierer, and R. Hayes, “Shock and vibration testing of an AMB supported energy storage flywheel,” 8th International Symposium on Magnetic Bearings, Mito, Japan, August 26-28, 2002 (PR. 472).
* B.T. Murphy, J.R. Kitzmiller, R.C. Zowarka, J.J. Hahne, and W.A. Walls, “Rotordynamics design and test results for a model scale compulsator rotor,” IEEE Transactions on Magnetics, vol. 37, no. 1, January 2001, pp. 310-313 (PR 273).
* M.A. Pichot, J.P. Kajs, B.T. Murphy, A. Ouroua, B.M. Rech, R.J. Hayes, and J.H. Beno, “Active magnetic bearings for energy storage systems for combat vehicles,” IEEE Transactions on Magnetics, vol. 37, no. 1, January 2001, pp. 318-323 (PR 283).
* L.A. Hawkins, B.T. Murphy, and J. Kajs, “Analysis and testing of a magnetic bearing energy storage flywheel with gain-scheduled, MIMO control,” ASME TurboExpo 2000, Munich, Germany, May 8-11, 2000 (PR 471).
* K.G. Cook, , B.T. Murphy, S.M. Manifold, T. Park, M.D. Werst, J.R. Kitzmiller, W.A. Walls, A. Alexander, and K. Twigg, “Subscale rotor spin testing for compulsator component development,” IEEE Transactions on Magnetics, vol. 35, no. 1, January 1999, pp. 277-282 (PR 252).
* J.D. Herbst, et al., “Design, fabrication, and testing of 10 MJ composite flywheel energy storage rotors,” Proceedings, 1998 SAE Aerospace Power Systems Conference, April 21-23, 1998, pp. 235-244 (PR 262).
* B.T. Murphy, J.H. Beno, and D.A. Bresie, “Bearing loads in a vehicular flywheel battery,” 1997 SAE International Congress and Exposition, Detroit, Michigan, U.S.A., February 24-27, 1997 (PR 224).
* B.T. Murphy, S.M. Manifold, and J.R. Kitzmiller, “Compulsator rotordynamics and suspension design,” IEEE Transactions on Magnetics, vol. 33, no. 1, January 1997, pp. 474-479 (PR 207).
* J.R. Kitzmiller, S.B. Pratap, M.D. Werst, C.E. Penney, T.J. Hotz, B.T. Murphy, “Laboratory testing of the pulse power system for the cannon caliber electromagnetic gun systems (CCEMG),” IEEE Transactions on Magnetics, vol. 33, no. 1, part 1, January 1997, pp. 443-448 (PR 216).
* J.R. Kitzmiller, S.B. Pratap, T.A. Aanstoos, K.G. Cook, R.A. Keunast, B.T. Murphy, and D.E. Perkins., “Optimization and critical design issues of the air core compulsator for the cannon caliber electromagnetic launcher system (CCEML),” IEEE Transactions on Magnetics, vol. 31, no. 1, January 1995, pp. 61-66 (PR 199).
* C. Rouvas, B.Tm Murphy, and R.K. Hale, “Bearing parameter identification using power spectral density methods,” Proc. IMechE International Conference on Rotordynamics, Bath, England, September, 1992.
* B.T. Murphy and M.N. Wagner, “Measurement of rotordynamic coefficients for a hydrostatic radial bearing,” Journal of Tribology, Transactions of the ASME, vol. 113, no. 3, July, 1991, pp. 518-525.
* B.T. Murphy, J.K. Scharrer, and L.A. Hawkins, “The SSME HPFTP wavy interstage seal: Part II - rotordynamic analysis,” American Society of Mechanical Engineers, Design Engineering Division (Publication) DE, vol. 18-2, 1989, pp. 101-107.
* J.M. Vance, B.T. Murphy, and H.A. Tripp, “Critical speeds of turbomachinery: computer predictions vs. experimental measurements - Part I: the rotor mass-elastic model,” Journal of Vibration, Acoustics, Stress, and Reliability in Design, vol. 109, no. 1, January, 1987, pp. 1-7.
* J.M. Vance, B.T. Murphy, and H.A. Tripp, “Critical speeds of turbomachinery: computer predictions vs. experimental measurements - Part II: effect of tilt-pad bearings and foundation dynamics,” Journal of Vibration, Acoustics, Stress, and Reliability in Design, vol. 109, no. 1, January, 1987, pp. 8-14.
* H.A. Tripp and B.T. Murphy, “Eccentricity measurements on a tilting-pad bearing,” American Society of Lubrication Engineers Transactions, vol. 28, no. 2, April 1985, pp. 217-224.
* J.M. Vance, B.T. Murphy, and HA Tripp, “Critical speeds of turbomachinery computer predictions vs. experimental measurements,” Proceedings of the Thirteenth Turbomachinery Symposium, Houston, Texas, U.S.A., 1984, pp. 105-130.
* B.T. Murphy and J.M. Vance, “An improved method for calculating critical speeds and rotordynamic stability of turbomachinery,” ASME Journal of Engineering for Power, vol. 105, no. 3, July 1983, pp. 591-595.
* B.T. Murphy and J.M. Vance, “An improved method for calculating critical speeds and rotordynamic stability of turbomachinery,” Proceedings of the Tenth Turbomachinery Symposium, 1981, pp. 141-146.
* M.S. Darlow, B.T. Murphy, J.A. Elder, G.N. Sandor, “Extension of the transfer matrix method for rotordynamic analysis to include a direct representation of conical sections and trunnions,” Journal of Mechanical Design, Transactions of the ASME, vol. 102, no. 1, January, 1980, pp. 122-129,

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