Links are provided for articles available on-line with a static link. 

Otherwise, a link to the journal is provided.

This page was last updated on October 22, 2010.

(Notes:  Links to articles in press may not function until the paper has been assigned to a particular issue.  In that case, use Journal link.   If your domain does not have electronic access to these journals, the links may not function properly.)

Refereed Journal Papers:

31 Z. Xie, W. S. Shepard, Jr. and K. A. Woodbury, “Design optimization for vibration reduction of viscoelastic composite beams using genetic algorithms,” Shock and Vibration, 16(5), pp. 455-466 (2009).
30. Z. Xie and W. S. Shepard, Jr., “An enhanced beam model for constrained layer damping and a parameter study of damping contribution,” J. Sound. Vib., 319(3-5), pp. 1271-1284 (2009).
29. Z. Xie and W. S. Shepard, Jr., “Development of a single-layer finite element and a simplified finite element modeling approach for constrained layer damped structures,” Finite Elements in Analysis and Design, 45(8-9), pp. 530-537 (2009).
28. J. Wang, W. S. Shepard, Jr., K. A. Cunefare and K. A. Williams, “Actuation of a discontinuous structure with piezoelectric actuators,” J. Sound. Vib., 309(3-5), pp. 677-694, (2008).
27. K. A. Williams, W. T. Keith, M. J. Marcel, T. A. Haskew, W. S. Shepard and B. A. Todd, “Experimental investigation of fuel cell dynamic response and control,” J. Power Sources, 163(2), pp. 971-985, (2007).
26. V. Palan, W. S. Shepard, Jr., and K. A. Williams, “Removal of excess product water in a PEM Fuel Cell Stack by vibrational and acoustical methods,” J. Power Sources, 161(2), pp. 1116-1125 (2006).
25. Y. Liu and W. S. Shepard, Jr., “Reducing the impact of measurement errors when reconstructing spatial dynamic forces,” ASME J. of Vibration and Acoustics, 128(5), pp. 586-593 (2006).
24. V. Palan and W. S. Shepard, Jr., “Enhanced water removal in a fuel cell stack by droplet atomization using structural and acoustic excitation,”  J. Power Sources, 159(2), pp. 1061-1070, (2006).
23. J. Wang, W. S. Shepard, Jr., K. A. Williams and C. B. Gattis, “Active vibration control of a plate-like structure with discontinuous  boundary conditions,” Smart Mater. Struct., 15(3), pp. N51-N60, (2006)
22. V. Palan, W. S. Shepard, Jr. and J. G. McDaniel, “Effect of number of measurement locations in the implementation of iterative wavenumber fitting for viscoelastically damped structures,” SAE Trans., J. Passenger Cars – Mechanical Systems, 114(6), pp. 2630-2637 (2006).
21. V. Palan, W. S. Shepard, Jr. and J. G. McDaniel, “Characterization of an experimental wavenumber fitting method for loss  factor estimation using a viscoelastically damped structure,” J. Sound. Vib., 291(3-5), pp. 1170-1185 (2006).
20. W. S. Shepard, Jr. and Y. Liu, “A method for structural vibration characterization in the mid-frequency region,” J. Acoust. Soc. Am., 119(2), pp. 897-908 (2006).
19. Y. Liu and W. S. Shepard, Jr., “An improved method for the reconstruction of a distributed force acting on a vibrating structure,” J. Sound Vib., 291(1-2), pp. 367-387 (2006).
18. M. Li, T.C. Lim , Y.H. Guan, W.S. Shepard Jr., “Actuator design and experimental validation for active gearbox vibration control,” Smart Mater. Struct., 15(1), pp. N1-N6 (2006).
17. M. Li, T. C. Lim, W. S. Shepard, Jr. and Y. H. Guan, “Experimental active vibration control of gear mesh harmonics in a power recirculation gearbox system using a piezoelectric stack actuator,” Smart Mater. Struct., 14(5), pp. 917-927 (2005).
16. Y. H. Guan, T. C. Lim and W. S. Shepard, Jr., “Experimental study on active vibration control of a gearbox system,” J. Sound Vib., 282(3-5), pp. 713-733 (2005).
15. Y. Liu and W. S. Shepard, Jr., “Dynamic force identification based on enhanced least squares and total least squares schemes in the frequency domain,” J. Sound Vib., 282(1-2), pp. 37-60 (2005).
14. V. Palan, W. S. Shepard, Jr. and T. C. Lim, "Case Study: Noise Control Approaches for a Fuel-Cell Air Compressor System," Noise Control Engineering Journal, 52(5), pp. 197-209 (2004).
13. Y. H. Guan, W. S. Shepard, Jr., T. C. Lim and M. Li, “Experimental analysis of an active vibration control system for gearboxes,” Smart Mater. Struct., 13(5), pp. 1230-1237 (2004).
12. M. Li, T. C. Lim and W. S. Shepard, Jr., “Modeling active vibration control of a geared rotor system,” Smart Mater. Struct., 13(3), pp. 449-458 (2004).
11. Y. H. Guan, W. S. Shepard, Jr. and T. C. Lim, “Direct hybrid adaptive control of gear pair vibration,” J. Dyn. Sys., Meas. & Control, 125(4), pp. 585-594 (2003).
10. Y. H. Guan, M. Li, T. C. Lim and W. S. Shepard, Jr., “Comparative analysis of actuator concepts for active gear pair vibration control,” J. Sound Vib., 269(1-2), pp. 273-294 (2003).
9. P. H. Mathuria, T. C. Lim, W. S. Shepard, S. R. Bell, M. Venturi, H. H. Dobbs and E. Kallio, “Vibration and shock considerations in the design of a truck-mounted fuel cell APU system,” SAE 2002 Transactions, Journal of Commercial Vehicles, 111(2), p. 579–588 (2003).
8. W. S. Shepard, Jr., “The impact of moments near discontinuities in structural-acoustic systems,” J. Vib. Acoust., Trans. ASME, 125(2), pp. 137-144 (2003).
7. W. S. Shepard, Jr., “Comparison of moments and couple-generating forces near discontinuities in structural-acoustic systems,” J. Acoust. Soc. Am., 111(4), pp. 1718-1725 (2002).
6. W. S. Shepard, Jr. and K. A. Cunefare, “The influence of substructure modeling on the structural-acoustic response of a plate system,” J. Acoust. Soc. Am., 109(4), pp. 1448-1455 (2001).
5. J. G. McDaniel and W. S. Shepard, Jr., “Estimation of structural wavenumbers from spatially sparse response measurements,” J. Acoust. Soc. Am., 108(4), pp. 1674-1682 (2000).
4.  W. S. Shepard, Jr., K. A. Cunefare and J. H. Ginsberg, “Identifying critical elastic scales in structural-acoustic models,” J. Vib. Acoust., Trans. ASME, 120(2), pp. 455-460 (1998).
3. W. S. Shepard, Jr. and K. A. Cunefare, “Sensitivity of structural acoustic response to attachment feature scales,” J. Acoust. Soc. Am., 102(3), pp. 1612-1619 (1997).
2. W. S. Shepard, Jr. and K. A. Cunefare, “Active control of extended acoustic sources in a half-space,” J. Acoust. Soc. Am., 96(4), pp. 2262-2271 (1994).
1. K. A. Cunefare and S. Shepard, “The active control of point acoustic sources in a half-space,” J. Acoust. Soc. Am., 93(5), pp. 2732-2739 (1993).

 

Conference Proceedings:

17.

Biaobiao Zhang, W. Steve Shepard Jr., Candace L. Floyd, “Investigation of stress wave propagation in brain tissues through the use of finite element method,” Proc. ASME Int. Mech. Eng. Cong. & Exp., IMECE2010-39994 (November 12-18, 2010, Vancouver, British Columbia, Canada).
16.

Bill B.B. Zhang and W. S. Shepard Jr. “Study of wave load reconstruction for acoustic sensor development,” NSF CMMI Research and Innovation Conference 2009 (Honolulu, HI, June 22-25, 2009).
15.

W. S. Shepard, Jr., B. B. Zhang and C.-C. Chen, “Structural configuration study for an acoustic wave sensor,” in Proceedings of SPIE , 15th Annual International Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring (San Diego, CA, March 10-14, 2008) 6932-131 pp. 12.
14. V. Palan, W. S. Shepard, Jr. and J. G. McDaniel, “Effect of number of measurement locations in the implementation of iterative wavenumber fitting for viscoelastically damped structures,” SAE Noise & Vibration Conference & Exhibition (Traverse City, MI, May 16-19, 2005) SAE 2005-01-2272, pp. 1-8.
13. J. Wang, W. S. Shepard, Jr., K. A. Williams and C. B. Gattis, "Active control of International Space Station experiment rack shelf simulator vibrations," in Proceedings of 2004 ASME International Mechanical Engineering Congress (Anaheim, CA, 2004) IMECE2004-60853 pp. 1-9.
12. W. S. Shepard, Jr. and Y. Liu, "A method for characterizing elastic structures in the mid-frequency region," in Proceedings of 2004 ASME International Mechanical Engineering Congress (Anaheim, CA, 2004) IMECE2004-59220 pp. 1-6.
11. Y. Liu and W. S. Shepard, Jr., “An improved spatial operational force reconstruction method,” in Proceedings of Twenty Second Southeastern Conference on Theoretical and Applied Mechanics (Tuskegee, Alabama, August 2004) pp. 314-322.
10. V. Palan, W. S. Shepard, Jr. and T. C. Lim, “Noise control techniques for a reciprocating fuel cell air compressor,” in Proceedings of Twenty Second Southeastern Conference on Theoretical and Applied Mechanics (Tuskegee, Alabama, August 2004) pp. 560-569.
9. Y. H. Guan, W. S. Shepard, Jr., T. C. Lim and M. Li, “Experimental study on active gear mesh vibration control,” in Proceedings of SPIE, Smart Structures and Materials, Modeling, Signal Processing, and Control (San Diego, CA, March 2004) 5383 pp. 366-375.
8.  B. A. Todd and W. S. Shepard, “Teaching capstone design to a multiple location team,” in Proceedings of IMECE'03, 2003 ASME International Mechanical Engineering Congress & Exposition, 42448 (Washington, D.C, 2003).
7. C. B. Gattis and W. S. Shepard, Jr., "Adaptive structures for microgravity vibration control and isolation," in Proceedings of 11th AIAA/ASME/AHS Adaptive Structures Conference (Norfolk, VA, April 7-10, 2003), paper no. 1700 AIAA-2003-1872.
6. P. H. Mathuria, T. C. Lim, W. S. Shepard, S. R. Bell, M. Venturi, H. H. Dobbs and E. Kallio, "Vibration and shock considerations in the design of a truck-mounted fuel cell APU system (SAE Paper Number 2002-01-3050)," in Proceedings of International Truck & Bus Meeting & Exhibition (Detroit, MI, 2002) (National Automotive Center, Technical Review, Pages 21-28).
5. Y. Guan, T. C. Lim and W. S. Shepard, Jr., “Active vibration control of a gear pair using a direct hybrid adaptive control method,” in Proceedings of SPIE 9th Annual International Symposium on Smart Structures and Materials - Modeling, Signal Processing, and Control (San Diego, CA, 2002) Vol. 4693, pp. 360-371.
4. Y. H. Guan, M. Li, T. C. Lim and W. S. Shepard, Jr., “Comparison of actuator designs for active vibration control of a gear pair system,” in Proceedings of SPIE 9th Annual International Symposium on Smart Structures and Materials - Modeling, Signal Processing, and Control (San Diego, CA, 2002) Vol. 4693, pp. 372-383.
3. W. S. Shepard, Jr. and K. A. Cunefare, “Sensitivity of structural acoustic response to attachment feature scales,” in Proceedings of Winter Annual Meeting, ASME (Atlanta, GA, November 20, 1996) Vol. 96-WA/NCA-22, Part 1, pp. 53-60.
2. W. S. Shepard, Jr., K. A. Cunefare and J. H. Ginsberg, “Identifying critical elastic scales in structural-acoustic models,” in Proceedings of ASME, 15th Biennial Conference on Vibration and Noise (Boston, MA, 17-21 Sept. 1995) Vol. 3B, pp. 267-273.
1. K. A. Cunefare, W. S. Shepard, Jr. and J. H. Ginsberg, “Spectral techniques for assessing critical scales in models of fluid loaded structures,” in Proceedings of 15th International Congress on Acoustics (Trondheim, Norway, 26-30 June 1995) Vol. 4 of 4, pp. 405-408.

Select Presentations:

  1. W. S. Shepard, Jr. and B. B. B. Zhang, “The response of a beam-like acoustic sensor to transient sound waves,” J. Acoust. Soc. Am., 122(5, Pt. 2), p. 3066 (2007).

  2. Z. Xie and W. S. Shepard, Jr., “A simplified finite-element modeling approach for constrained layer damping,” J. Acoust. Soc. Am., 122(5, Pt. 2), p. 3067 (2007).

  3. Z. Xie and W. S. Shepard, Jr., “Using an enhanced constrained layer damping model to assess relative damping contributions,” J. Acoust. Soc. Am., 120(5), p. 3133 (2006).

  4. W. S. Shepard, Jr. and K. A. Cunefare, “The influence of substructure modeling on the predicted vibroacoustic response of a fluid-loaded plate system,” J. Acoust. Soc. Am., 107(5, Pt. 2), p. 2884 (2000).

  5. W. S. Shepard, Jr., “The impact of scales and spatial distributions on small scale structural acoustic models,” in Proceedings of 5th Annual Graduate Student Symposium (Georgia Institute of Technology, February 1995).

  6. K. A. Cunefare, W. S. Shepard, Jr. and J. H. Ginsberg, “Spectral investigation of spatial scales associated with substructures on a fluid-loaded plate,” J. Acoust. Soc. Am., 95(5, pt. 2), p. 2846 (1994).

  7. S. Shepard and K. A. Cunefare, “Active noise control applied to extended sources in a half-space,” J. Acoust. Soc. Am., 94(3, pt. 2), p. 1873 (1993).

  8. K. A. Cunefare and S. Shepard, “The active control of point acoustic sources in a half-space,” J. Acoust. Soc. Am., 92(4, pt. 2), p. 2412 (1992).