Peter Stepanishen
Professor, Department of Ocean Engineering
University of Rhode Island
222 Sheets Building
Narragansett, Rhode Island 02882-1197
Telephone: (401)-874-6577
Fax: (401)-874-6837
Email: stepanishen@oce.uri.edu

Degrees in fields, institutions, and dates:

• Ph.D. Engineering Acoustics, Pennsylvania State University, 1969
• M.S. Electrical Engineering, University of Connecticut, 1966
• B.S. Electrical Engineering, Michigan State University , 1963

Professional history:

• General Dynamics/Electric Boat 1963-1974
  • Control systems engineer,1963-1965
  • Acoustical systems engineer, 1965-69
  • Research Specialist/Principal Engineer, 1969-74
• University of Rhode Island
  • Assistant Professor, 1974-77
  • Associate Professor, 1977-82
  • Professor, 1982-present.

General areas of research interest:

• Acoustics
• Vibrations
• Signal processing

Areas of present research interest:

• Acoustic wave propagation - Localized waves and Bessel Bullets
• Hydroacoustics
• Structural acoustics
• Acoustic sensors

Recent research sponsors:

• Office of Naval Research
• Naval Undersea Warfare Center
• URI Transportation Center
• Ocean Technology Center

Publications and research presentations:

• Over 150 papers and presentations at national and international meetings

Lectured in:

• U.S., England, France and China

Principal publications (selected) from 1994 ---- Refereed papers :

• Stepanishen, P.R. (coauthor), "Acoustic transient radiation from fluid-loaded shells of revolution using time-dependent in vacuo eigenvector expansions," J. Acoust. Soc. Amer., 95(2), 601-616, 1994.
• Stepanishen, P.R. (coauthor), "Transient interaction between impedance discontinuities on elastic vibrators using a convolution integral equation approach," J. Acoust. Soc. Amer., 95(3), 1274-1280, 1994.
• Stepanishen, P.R. (coauthor), "Acoustic harmonic radiation from fluid-loaded infinite cylindrical elastic shells using elasticity theory," J. Acoust. Soc. Amer., 96(1), 573-582, 1994.
• Stepanishen, P.R. (coauthor), "Acoustic harmonic radiation from fluid-loaded spherical shells using elasticity theory," J. Acoust. Soc. Amer., 96(4), 2564-2575, 1994.
• Stepanishen, P.R. (coauthor), "Acoustic time-dependent loading on elastic shells of revolution using the internal source density and singular value decomposition method," J. Acoust. Soc. Amer., 99(4), 1913-1923, 1996.
• Stepanishen, P.R., "Transient vibratory response of fluid-loaded shells using convolution integral equations," J. Acoust. Soc. Amer., 101(4), 1877-1884, 1997.
• Stepanishen, P.R., "A generalized internal source density method for the forward and backward projection of harmonic pressure fields from complex bodies," J. Acoust. Soc. Amer., 101(6), 3270-3277, 1997.
• Stepanishen, P.R., "Acoustic transient radiation and scattering from fluid-loaded elastic shells using convolution methods," J. Acoust. Soc. Amer., 102(1), 110-119, 1997.
• Stepanishen, P.R., "Acoustic axisymmetric radiation and scattering from bodies of revolution using the internal source density and Fourier methods," J. Acoust. Soc. Amer., 102(2), 726-732, 1997.
• Stepanishen, P.R. (coauthor), "Modal impulse response and wave vector--time domain methods to evaluate transient radiation from axisymmetric planar radiators," J. Acoust. Soc. Amer., 102(2), 979-988, 1997.
• Stepanishen, P.R., "The forward projection of harmonic pressure fields using the generalized internal source density method," J. Acoust. Soc. Amer., 102(4), 1955-1963, 1997.
• Stepanishen, P.R., "The forward projection of harmonic pressure fields using the generalized internal source density method," J. Acoust. Soc. Amer., 102(4), 1955-1963, 1997.
• Stepanishen, P.R., "Acoustic bullets: Transient Bessel beams generated by planar apertures," J. Acoust. Soc. Amer., 102(6), 3308-3318, 1997.
• Stepanishen, P.R. (coauthor), "Temporal backward planar projection of acoustic transients," J. Acoust. Soc. Amer., 103(4), 1723-1726, 1998.
• Stepanishen, P.R., "Acoustic bullets/transient Bessel beams: Near to far field transition via an impulse response approach," J. Acoust. Soc. Amer., 103(4), 1742-1751, 1998.
• Stepanishen, P.R., "A generalized modal impulse response and Fourier transform approach to investigate acoustic transient Bessel beams and Bessel bullets," J. Acoust. Soc. Amer., 105(3), 1493-1502 1999.
• Stepanishen, P.R., "Acoustic Bessel bullets," J. Sound Vib. ,222(1),115-1143, 1999.
• Stepanishen, P.R., "Separation of an acoustic signal from noise via the use of point pressure and velocity measurements," J. Acoust. Soc. Amer. 2000.

Selected presentations at national meetings from 1994- present:

• Stepanishen, P.R., "Time-domain methods of analysis in structural acoustics," presented at the Meeting of the Acoust. Soc. Amer., May 1994.
• Stepanishen, P.R. et al., "Frequency-time analysis of pulse propagation in elastic plates excited by frequency-modulated chirp excitations," presented at the Meeting of the Acoust. Soc. Amer., May 1994.
• Stepanishen, P.R. et al., "Forward and backward projection of transient acoustic field functions obtained from schlieren and fiber-optic measurements," presented at the Meeting of the Acoust. Soc. Amer., May 1995.
• Stepanishen, P.R. et al., "Forward projection of transient signals obtained from a fiber-optic pressure sensor," presented at the Meeting of the Acoust. Soc. Amer., May 1997.
• Stepanishen, P.R. and Jie Sun, "Space-time dynamic focusing from axisymmetric planar radiators with transient excitations: Localized waves," presented at the Meeting of the Acoust. Soc. Amer., May 1997.
• Stepanishen, P.R. and Jie Sun, "Modal impulse response and wave vector-time domain methods to evaluate transient radiation from axisymmetric planar radiators," presented at the Meeting of the Acoust. Soc. Amer., May 1997.
• Stepanishen, P.R., "Convolution integral methods of evaluating the transient response of fluid-loaded plates and shells with attached structures," presented at the Meeting of the Acoust. Soc. Amer., May 1997.
• Stepanishen, P.R. and Scott E. Hassan, "Transient axisymmetric response of a finite cylindrical shell with internal fluid loading. Part 1. Theory and numerical results," presented at the Meeting of the Acoust. Soc. Amer., May 1997.
• Stepanishen, P.R. and Scott E. Hassan, "Transient axisymmetric response of a finite cylindrical shell with internal fluid loading. Part 2. Comparison of theory and experiment," presented at the Meeting of the Acoust. Soc. Amer., May 1997.
• Stepanishen, P.R., "The forward and backward projection of harmonic pressure fields from complex three-dimensional bodies," presented at the Meeting of the Acoust. Soc. Amer., May 1997.
• Stepanishen, P.R. et al., "Planar backward projection of transient fields obtained from optical imaging methods," presented at the Meeting of the Acoust. Soc. Amer., May 1998.
• Stepanishen, P.R., "Spatial and temporal characteristics of acoustic Bessel Bullets via modal decomposition," presented at the Meeting of the Acoust. Soc. Amer., October 1998.
• Stepanishen, P.R., "Acoustic harmonic radiation from long thin bodies of revolution via the generalized internal source density method," presented at the Meeting of the Acoust. Soc. Amer., October 1998.
• Stepanishen,P.R., "Backward projection of harmonic pressure measurements using the generalized Internal Source Density Method and SVD," presented at the Meeting of the Acoust. Soc. Amer., December 2001
• Stepanishen,P.R. et al, "Piezoelectric sensors on internally fluid loaded elastic shells" presented at the Meeting of the Acoust. Soc. Amer., December 2001
• Stepanishen, P.R. et al, "A laser based acoustic velocity sensor," presented at the Fall Meeting of the Acoust. Soc. Amer., November 2003.
• Stepanishen, P.R. et al, "Separation of signals from near field noise via pressure and velocity field measurements," presented at the Fall Meeting of the Acoust. Soc. Amer., November 2003.
• Stepanishen, P.R. et al, "Acoustic transients from subsonic high speed sources using a linear time-varying systems approach," presented at the Fall Meeting of the Acoust. Soc. Amer., November 2003.
• Stepanishen, P.R. et al, "Acoustic near field pressures from subsonic high projectiles in an acoustic test tank," presented at the Fall Meeting of the Acoust. Soc. Amer., November 2003.
• Stepanishen, P.R. et al, "Analysis of the acoustic near field pressures from subsonic high projectiles in an acoustic test tank," presented at the Fall Meeting of the Acoust. Soc. Amer., November 2003
• Stepanishen, P.R., Chapter 10 Transient Acoustics in Encyclopedia of Acoustics, John Wiley and Sons 1997
• Book Review -- published in J. Sound and Vib. Vol 222 No.5 May 1999 Acoustics of layered media I : Plane and quasi-plane waves by L. M. Brekhovskikh and O.A. Godin -- Springer Verlag 1998

Scientific and professional societies:

• Acoustical Society of America
• Narragansett chapter of Acoustical Society of America
• American Society for Engineering Education (ASEE)
• Institute of Electrical and Electronic Engineers (IEEE)
• Sigma Xi

Honors and Awards:

• General Dynamics/EB Phd Fellowship Program-- 1967-1969
• Fellow of the Acoustical Society of America (1976)
• A.B. Wood Medal and Prize, awarded by the Inst. of Acoustics, England (1978)
• Teaching Excellence Award 1986- College of Engineering
• Visiting Professor--- 1982 Cambridge University, England
• Invited Scholar, Institute of Acoustics of Academia Sinica ( Beijing) 1987
• Visiting Professor--- 1989 Stanford University
• Lifetime honorary membership in the Narragansett Chapter of the Acoustical Society of America (1993)
• Distinguished Alumni Award of the Central Penn. Chapter of the Acoustical Society of America (1993)
• Visiting Professor--- 1996 University of Southampton, England