Faculty Directory

Contact Information: 2043 ERF Phone: (312) 413-7951 Fax: (312) 413-0447 E-Mail: troyston@uic.edu Laboratory, 1072 ERF Phone: (312) 413-0470

Thomas J. Royston
Professor

B.S., Mechanical Engineering, 1990
The Ohio State University

M.S., Mechanical Engineering, 1992
The Ohio State University

Ph.D., Mechanical Engineering, 1995
The Ohio State University

• The Acoustical Society of America R. Bruce Lindsay Award (2002)
• University of Illinois at Chicago College of Engineering Faculty Research Award (2002)
• National Science Foundation Faculty Early Career (CAREER) Development
  Award (1998)

Selected Publications

T. J. Royston, X. Zhang, H. A. Mansy and R. H. Sandler, "Modeling sound transmission through the pulmonary system and chest with application
to diagnosis of a collapsed lung," Journal of the Acoustical Society of
America 111 (4), 1931 - 1946 (2002).

T. H. El-Bialy, T. J. Royston, A. Sakata, R. L. Magin, "Vibratory coherence as an alternative to radiography in assessing bone healing after osteo-distraction," Annals of Biomedical Engineering 30 (2), 226 - 231 (2002).

H. A. Mansy, T. J. Royston and R. H. Sandler, "Acoustic characteristics of air cavities at low audible frequencies with application to pneumoperitoneum diagnosis," Medical & Biological Engineering & Computing 39 (2), 159 - 167 (2001).

X. Zhang, T. J. Royston, H. A. Mansy and R. H. Sandler, "Radiation impedance of a finite circular piston on a viscoelastic half-space with
application to medical diagnosis," Journal of the Acoustical Society of America 109 (2), 795 - 802 (2001).

S.-H. Lee, T. J. Royston and G. Friedman, "Modeling and compensation of hysteresis in piezoceramic transducers for vibration control," Journal of Intelligent Material Systems and Structures 11 (10), 781 - 790 (2000).

S.-H. Lee and T. J. Royston, "Modeling piezoceramic transducer hysteresis in the structural vibration control problem," Journal of the Acoustical Society of America 108 (6), 2843 - 2855 (2000).

T. J. Royston, T. Spohnholtz and W. A. Ellingson, "Use of Nondegeneracy in Nominally Axisymmetric Structures for Fault Detection With Application to Cylindrical Geometries," Journal of Sound and Vibration 230 (4), 791 - 808 (2000).

T. J. Royston, H. A. Mansy and R. H. Sandler, "Excitation and propagation of surface waves on a viscoelastic half-space with application to medical diagnosis," Journal of the Acoustical Society of America 106 (6), 3678 - 3686 (1999).

T. J. Royston and R. Singh, "Vibratory Power Flow Through a Nonlinear Path into A Resonant Receiver," Journal of the Acoustical Society of America, 101 (4), 2059 - 2069 (1997).

Research Interests

Structural acoustics and vibration, nonlinear dynamics, smart material systems & structures, medical diagnostics based on vibration and acoustics, musical instrument acoustics, nondestructive evaluation based on vibration and acoustics, vibration isolation.

Laboratory

Director, Acoustics and Vibrations Laboratory
1072 ERF, 312-413-0470

The Acoustics and Vibrations Laboratory has facilities for the accurate measurement and analysis of the vibrational and acoustical properties of a wide range of mechanical structures and systems. State-of-the-art equipment, instrumentation, and computational facilities available in the laboratory include:

1) Acuson 128xp10 Color Doppler Ultrasound System (wide range of probes, multiple Doppler imaging modes);

2) Polytec PI CLV-800-FF/1000 Laser Doppler Vibrometer system (threshold: 0.03 um/s, band: 250 kHz, max amplitude: 1.25 m/s);

3) Hewlett Packard (Agilent) VXI High Speed Measurement system (E8400A) which includes 8 channels Digitizer + DSP at 196 kSa/sec (E1433A), 2 channels programmable arbitrary source at 16384 points and 196 kSa/sec (E1434A), VXI PC link (E8491A), system computer controlled by HP VEE software;

4) 2 Trek High-Speed, High Voltage Amplifiers (+/- 2 kV with slew rate of 300V/us and +-10 kV with transconductance capability, both with current and voltage monitoring);

5) B&K 3550 Multi-channel Data Acquisition System (8 channels);

6) Hewlett Packard 35670 Multi-channel dynamic signal analyzer (2 channels);

7) Fully anechoic chamber: inner dimensions (wedge tip) of 7x6x6 ft;

8) Sound Proof chamber: inner dimensions of 6.5x6.5x6 ft;

9) B&K Sound Intensity Probe (1/2" phase-matched microphones);

10) Wide range of accelerometers (5 to 1000 mV/g), strain gages, microphones (1/2" & ¼"), air-coupled microphones, hydrophones, vibration shakers (5 and 25 lbf), etc. with associated signal conditioning (B&K, PCB, Millar).

Multiple Pentium pc platforms with access to UIC mainframe systems. Available software includes: Matlab, HP VEE, Fortran, Basic, C++, Mathematica, Maple, Star Acoustics, ME Scope, Labview, DSpace, MIMICs, ICEM, ANSYS, Pro-E, etc.