Department Publications

2020s

2024

42. Radiation resistance matrix for baffled simply curved plates for sound power applications

    Ian C. Bacon^‡, Trent P. Bates^†, Caleb B. Goates^†, Micah R. Shepherd, Jonathan D. Blotter, and Scott D. Sommerfeldt

    Noise Control Eng. J. 72 (2), 65-78 (2024).
    

2023

41. Increased modal damping of undamped single and multiscale acoustic black hole panels

    Micah R. Shepherd, Emily M. Stimson, and Amanda D. Hanford

    JASA Express Letters 3 (11), 115601 (2023).
    
42. Directional characteristics of two gamelan gongs

    Samuel D. Bellows^†, Dallin T. Harwood^‡, Kent L. Gee, and Micah R. Shepherd

    J. Acoust. Soc. Am. 154 (3), 1921-1931 (2023).
    
43. Modeling the sound radiation of gamelan gongs using analytic rigid spherical models

    Samuel David Bellows^†, Micah R. Shepherd, Kent L. Gee, and Timothy W. Leishman

    184th Meeting of the Acoustical Society of America, (Chicago, IL, May 2023). Proc. Meet. Acoust. 51 (1), 035003 (2023).
    
44. Evaluation of the dynamic response for scaled models of shaped concrete floor slabs

    Jonathan M Broyles, Micah R Shepherd, and Nathan C Brown

    Build. Acoustics 30 (2), 143-163 (2023).
    

2022

37. Modified acoustic transmission metrics for early-stage design exploration using a computational case study of heavyweight floors

    Jonathan M. Broyles, Micah R. Shepherd, and Nathan C. Brown

    Appl. Acoust. 196, 108865 (2022).
    
38. A comparison of algorithms for the vibroacoustic optimization of a beam: Gradient-based versus evolutionary

    Cameron A. McCormick and Micah R. Shepherd

    179th Meeting of the Acoustical Society of America, Acoustics Virtually Everywhere, (December 2020). Proc. Meet. Acoust. 42 (1), 022005 (2022).
    
39. Design Optimization of Structural–Acoustic Spanning Concrete Elements in Buildings

    Jonathan M. Broyles, Micah R. Shepherd, and Nathan C. Brown

    J. Archit. Eng. 28 (1), 04021044 (2022).
    
40. Variability in Measured Resonance Frequencies and Loss Factors of a Bolted Panel Structure

    Trevor Jerome, Micah Shepherd, and Stephen Hambric

    Noise and Vibration: Emerging Methods 2023, (Auckland, New Zealand, January 2023).
    

2021

33. Applying deflectometry techniques to non-reflective planar panels using add-on reflective material

    Gary L. Rhoades, Micah Shepherd, and Jeff Harris

    179th Meeting of the Acoustical Society of America, Acoustics Virtually Everywhere, (December 2020). Proc. Meet. Acoust. 42 (1), 065004 (2021).
    
34. Noninvasive methods for quantifying sound post placement in a cello

    Eric Rokni, Molly Smallcomb, Thomas E. Blanford, and Micah R. Shepherd

    179th Meeting of the Acoustical Society of America, Acoustics Virtually Everywhere, (December 2020). Proc. Meet. Acoust. 42 (1), 035006 (2021).
    
35. Ultrasonic investigation of the pressure profile on the faying surface of fastened aluminum plates

    Trevor W. Jerome, Micah R. Shepherd, and Stephen A. Hambric

    Mech. Syst. Signal Proc. 150, 107260 (2021).
    
36. Investigation of optimization techniques on structural-acoustical shaped concrete slabs in buildings

    Jonathan Michael Broyles, Micah R. Shepherd, and Nathan C. Brown

    179th Meeting of the Acoustical Society of America, Acoustics Virtually Everywhere, (December 2020). Proc. Meet. Acoust. 42 (1), 022001 (2021).
    

2020

29. Wavenumber interactions of turbulent boundary layer flow with structures exhibiting the acoustic black hole effect

    Micah R. Shepherd, Philip A. Feurtado, and Stephen C. Conlon

    178th Meeting of the Acoustical Society of America, (San Diego, CA, December 2019). Proc. Meet. Acoust. 39 (1), 065002 (2020).
    
30. Design optimization and performance comparison of three styles of one-dimensional acoustic black hole vibration absorbers

    Cameron A. McCormick and Micah R. Shepherd

    J. Sound Vibr. 470, 115164 (2020).
    

2010s

2019

27. A parallel computing framework for performing structural-acoustic optimization with stochastic forcing

    Micah R. Shepherd, Robert L. Campbell, and Stephen A. Hambric

    Struct. Multidiscip. Optim. 61 (2), 675-685 (2019).
    
28. Optimization of an acoustic black hole vibration absorber at the end of a cantilever beam

    Cameron A. McCormick and Micah R. Shepherd

    J. Acoust. Soc. Am. 145 (6), EL593-EL597 (2019).
    
29. On the physical meaning of subsonic wavenumber truncation as applied to source identification on vibrating structures

    Micah R. Shepherd, Michael T. Rose^†, and Scott D. Sommerfeldt

    176th Meeting of Acoustical Society of America, 2018 Acoustics Week in Canada, (Victoria, Canada, November 2018). Proc. Meet. Acoust. 35 (1), 065001 (2019).
    

2018

24. A comparison of fractional-sized to full-sized cellos

    Thomas E. Blanford, Micah R. Shepherd, and Trevor W. Jerome

    175th Meeting of the Acoustical Society of America, (Minneapolis, MN, May 2018). Proc. Meet. Acoust. 33 (1), 035002 (2018).
    

2017

23. Transient finite element/equivalent sources using direct coupling and treating the acoustic coupling matrix as sparse

    John B. Fahnline and Micah R. Shepherd

    J. Acoust. Soc. Am. 142 (2), 1011-1024 (2017).
    
24. Vibration Amplitude and Fastener Torque Dependence of Damping in a Jointed Structure

    Trevor W. Jerome, Stephen A. Hambric, and Micah R. Shepherd

    ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, (Cleveland, OH, August 2017). Volume 8: 29th Conference on Mechanical Vibration and Noise. V008T12A020. ASME.
    
25. Modal forcing functions for structural vibration from turbulent boundary layer flow

    William K. Bonness, John B. Fahnline, Peter D. Lysak, and Micah R. Shepherd

    J. Sound Vibr. 395, 224-239 (2017).
    
26. Quieting a Rib-Framed Honeycomb Core Sandwich Panel for a Rotorcraft Roof

    Stephen A. Hambric, Micah R. Shepherd, Noah H. Schiller, Royce Snider, and Carl May

    J. Am. Helicopter Soc. 62 (1), 1-10 (2017).
    

2016

19. Multi-objective optimization of acoustic black hole vibration absorbers

    Micah R. Shepherd, Philip A. Feurtado, and Stephen C. Conlon

    J. Acoust. Soc. Am. 140 (3), EL227-EL230 (2016).
    

2015

18. A hybrid approach for simulating fluid loading effects on structures using experimental modal analysis and the boundary element method

    Micah R. Shepherd, John B. Fahnline, Tyler P. Dare, Stephen A. Hambric, and Robert L. Campbell

    J. Acoust. Soc. Am. 138 (5), 3073-3080 (2015).
    
19. Structural-acoustic optimization of a pressurized, ribbed panel

    Micah R Shepherd and Stephen A Hambric

    168th Meeting of the Acoustical Society of America, (Indianapolis, IN October 2014). Proc. Meet. Acoust. 22 (1), 065003 (2015).
    
20. Experimental evidence of modal wavenumber relation to zeros in the wavenumber spectrum of a simply supported plate

    Olivier Robin, Alain Berry, Noureddine Atalla, Stephen A. Hambric, and Micah R. Shepherd

    J. Acoust. Soc. Am. 137 (5), 2978-2981 (2015).
    

2014

15. Minimizing the acoustic power radiated by a fluid-loaded curved panel excited by turbulent boundary layer flow

    Micah R. Shepherd and Stephen A. Hambric

    J. Acoust. Soc. Am. 136 (5), 2575-2585 (2014).
    
16. The effects of wood variability on the free vibration of an acoustic guitar top plate

    Micah R. Shepherd, Stephen A. Hambric, and Dennis B. Wess

    J. Acoust. Soc. Am. 136 (5), EL357-EL361 (2014).
    

2013

13. Simulations and Measurements of the Vibroacoustic Effects of Replacing Rolling Element Bearings With Journal Bearings in a Simple Gearbox

    Stephen A. Hambric, Micah R. Shepherd, Robert L. Campbell, and Amanda D. Hanford

    J. Vib. Acoust. 135 (3), 031012 (2013).
    

2012

12. Comment on plate modal wavenumber transforms in Sound and Structural Vibration [Academic Press (1987, 2007)] (L)

    Micah R. Shepherd and Stephen A. Hambric

    J. Acoust. Soc. Am. 132 (4), 2155-2157 (2012).
    
13. Structural Intensity Modeling and Simulations for Damage Detection

    Micah R. Shepherd, Stephen C. Conlon, Fabio Semperlotti, and Stephen A. Hambric

    J. Vib. Acoust. 134 (5), 051004 (2012).
    
14. An Approach for Structural-Acoustic Optimization of Ribbed Panels Using Component Mode Synthesis

    Micah R. Shepherd and Stephen A. Hambric

    ASME 2012 Noise Control and Acoustics Division Conference at InterNoise 2012, (New York City, NY, August 2012). pp. 221-226. ASME.
    
15. Nonlinearity analysis of model-scale jet noise

    Kent L. Gee, Anthony A. Atchley, Lauren E. Falco, and Micah R. Shepherd^†

    Nonlinear Acoustics: State-of-the-Art and Perspectives (May 2012, Tokyo, Japan). AIP Conf. Proc. 1474, 307 (2012).
    
16. Effects of Gears, Bearings, and Housings on Gearbox Transmission Shafting Resonances

    Stephen A. Hambric, Micah R. Shepherd, and Robert L. Campbell

    ASME 2010 International Mechanical Engineering Congress and Exposition, (Vancouver, Canada. November 2010). Volume 13: Sound, Vibration and Design. pp. 229-238. ASME.
    

2011

7. Rating of the loudest college basketball arenas for ESPN magazine

   Micah Shepherd, Stephen A. Hambric, Neal D. Evans, Daniel J. Domme, Andrew W. Christian, Bryan P. Cranage, … (4 other authors)

   161st Meeting of the Acoustical Society of America, (Seattle, WA, May 2011). Proc. Meet. Acoust. 12 (1), 015004 (2011).
   
8. Evolution of statistical properties for a nonlinearly propagating sinusoid

   Micah R. Shepherd, Kent L. Gee, and Amanda D. Hanford

   J. Acoust. Soc. Am. 130 (1), EL8-EL13 (2011).
   

2010

5. Bicoherence analysis of model-scale jet noise

   Kent L. Gee, Anthony A. Atchley, Lauren E. Falco, Micah R. Shepherd^†, Lawrence S. Ukeiley, Bernard J. Jansen, and John M. Seiner

   J. Acoust. Soc. Am. 128 (5), EL211-EL216 (2010).
   
6. Numerical Characterization of the Background Noise Generated by the ARL/Penn State Garfield Thomas Water Tunnel Impeller

   Michael L. Jonson, Micah R. Shepherd, Eric C. Myer, Stephen A. Hambric, and Rachael J. DeRoche

   SME 2009 International Mechanical Engineering Congress and Exposition, (Lake Buena Vista, FL, November 2009). Volume 15: Sound, Vibration and Design. pp. 43-50. ASME.
   
7. On the possible role of short-range shock formation and coalescence in jet aeroacoustic source characterization

   M. R. Shepherd^† and K. L. Gee

   38th International Congress and Exposition on Noise Control Engineering 2009, (August 2009, Ottawa, Canada), J. S. Bolton ed., 1285-1291 (2010).
   

2000s

2009

2. Short-range shock formation and coalescence in numerical simulation of broadband noise propagation

   Micah R. Shepherd^†, Kent L. Gee, and Mark S. Wochner

   J. Acoust. Soc. Am. 126 (6), 2886-2893 (2009).
   

2007

1. Identification of Nonlinear and Near-field Effects in Jet Noise Using Nonlinearity Indicators

   Kent L. Gee, Micah R. Shepherd^†, Lauren E. Falco, Anthony A. Atchley, Lawrence S. Ukeiley, Bernard J. Jansen, and John M. Seiner

   13th AIAA/CEAS Aeroacoustics Conference (28th AIAA Aeroacoustics Conference) (Rome, Italy, May 2007). AIAA paper 2007-3653.
   

^‡Undergraduate Student Author

^†Graduate Student Author