a Professor in the Penn State Graduate Program in Acoustics
Director of Penn State's Center for Acoustics and Vibration (CAV)
Research Professor in the Fluid Dynamics and Acoustics Office at the Applied Research Lab (ARL/Penn State)
D.Sc. Mechanical Engineering, 1996, the George Washington University,
Thesis topic: Formulations and Methods for Robust and Efficient Optimization of Acoustic Radiated Noise Problems
M.S. Mechanical Engineering, 1987, Virginia Tech,
Thesis topic: Structural Shape Optimization of 3D Finite Element Models
B.S. Mechanical Engineering, 1986, Virginia Tech.
Fellow, Institute for Noise Control Engineering (INCE)
Fellow, American Society of Mechanical Engineering (ASME), Member and past President of ASME Noise Control and Acoustics Division
Vice President for the Americas, International INCE
International Organizing Committee for the NOVEM (Noise and Vibration EMerging Methods) and FLINOVIA (FLow Induced NOise and Vibration Issues and Aspects) conference series.
I co-edited/co-wrote this book, published as part of Wiley's Book Series on Acoustics, with Don Nefske and Sue Sung. The book includes 15 chapters ranging from the basics of structural vibration and radiated sound to numerical methods and noise control treatments. You can buy it through Amazon
My colleagues from Italy and France and I organized the first Symposium on Flow Induced Noise Issues and Aspects in Rome, Italy in November 2013. The book includes 15 papers by world-renowned experts in this field, available on Amazon. You can also download individual chapters at the Springer website.
I wrote my first tutorial on structural acoustics for Acoustics Today, at the request of founding editor Dick Stern. It covers the basics of waves in structures, modes of vibration, mobility and impedance, infinite structure theory, structural damping, and finite element analysis. Download it here.
I collaborated on the second Structural Acoustics Tutorial with my Penn State colleague, Dr. John Fahnline, well known acoustic boundary element expert. We explain the basics of sound radiation, radiation efficiency and damping, sound transmission loss, and boundary element analysis. Download it here.
This tutorial expands on sound transmission loss simulations and was presented at the 2015 Internoise in San Francisco (sponsored by the International Institute of Noise Control Engineering (I-INCE). Download it here.
This tutorial draws from my group's work on quieting composite sandwich panels, covering bending wavespeeds, structural modes of vibration, mobility, damping, and radiation efficiency. Download it here.
I have found that students have difficulty understanding wavenumber transformations. This tutorial includes some animations and discussion to demystify this concept. Download it here.
This is a summary of work for NASA Glenn on how fluid film bearings affect structure-borne noise transmission in gearboxes, including numerical models and measurements. Download it here.
This is a summary of work for NASA Langley on reducing sound transmission through rotorcraft roof panels, once again including numerical models validated with measurements. Download it here.