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Research

• Dynamics of aerospace vehicles and structures
• Structural dynamics
  • Material damping models and characterization
    • Elastomeric rotorcraft parts
  • Effects of membrane loads
  • Composite materials and structures
  • Experimental modal analysis
• Vibration and noise control
  • Passive damping
    • Viscoelastic damping treatments
    • Damped composite materials
  • Vibration absorbers
  • Vibration isolation
  • Semi-active (tuning) control
• Controlled structures
  • Piezoelectric ceramic actuators
• Damage modeling and health monitoring

Current Projects

Thermo-Mechanical Behavior of Rotorcraft Elastomeric Lag Dampers National Rotorcraft Technology Center, Sikorsky, Boeing Helicopters, Lord Corp., Army ATCOM, UTRC with E.C. Smith	Chris Brackbill (PhD) L. Eric Ruhl (MS) Sumit Sarkar (MS, ME) Joe Szefi (PhD, ME) Deepak Ramrakyani (MS)	Abstract of work
High-Force, High-Displacement Piezoelectric Actuators for Structural Shape Control SAMPSON Consortium, DARPA with G.H. Koopmann	Julien Bernard (MS, Emch) Jeremy Frank (PhD, ME) Dave Ericson (MS, ME)
Virtual Containment for a Composite Flywheel: Combined Momentum and Energy Storage System for Spacecraft Applied Material Technologies, USAF Phillips Lab with C.E. Bakis	Tom Leffler (MS, Emch) Fuh-Wen Shiue (Ph.D)
Frequency-Agile Piezoelectric Transducers Office of Naval Research (Acoustic Transduction MURI)	Chad Hébert (MS) Julien Bernard (PhD)
Energy Harvesting Office of Naval Research (U. FLorida) with Heath Hofmann	Geffrey Ottman (MS EE)
MEchanical DIode Resonant Rectifying Actuator (MEDIRRA) Defense Advanced Research Projects Agency (DARPA) with Gary Koopmann, Eric Mockensturm	Jacob Loverich (MS ME) Jie Jiang

Previous Projects

Damped Honeycomb Sandwich Panels Boeing Commercial Airplane	Jeff Zapfe (PhD)	Abstract of work
Modeling Thermo-Mechanical Behavior of Rotorcraft Elastomeric Lag Dampers Sikorsky, Boeing Helicopters, Lord Corp., Army ATCOM with E.C. Smith	Kiran (Amgee) Govindswamy (PhD) Mike Beale (MS) Lynn Byers (MS)	Abstract of work
Damped Structural Composites using Resistively-Shunted Piezoceramic Fibers Office of Naval Research with S. Yoshikawa	Shridhar Yarlagadda (PhD)	Abstract of work
A Piezoceramic Inertial Actuator for Noise and Vibration Control PCB/NASA with G.H. Koopmann, S. Yoshikawa	Razvan Ruzovici (M.S.)
An Embeddable Piezoceramic Induced-Strain Actuator SPICES Consortium with G.H. Koopmann, S. Yoshikawa	Moreshwar (Nitin) Deshpande (M.S.) Suresh Pai (Ph.D.)
Space Environmental Effects on LDEF Gr/Ep Composites	Tom Klein (M.S.)	Abstract of work
Validated Hierarchical Modeling of a Space Truss	Scott Parent (M.S.)	Abstract of work
Design, Manufacture, and Testing of Volume Scanning Mechanisms for a LIDAR and RADAR Sounder	Tom Manning (M.S.)	Abstract of work
Multidisciplinary Design Projects in Manufacturing Education ARPA (ECSEL/NSF) with T. Litzinger, C. Ruud, M. Trethewey	Chris Brackbill	Abstract of work
Prediction of Damage Evolution in Structural Components Office of Naval Research with J.P. Cusumano and PSU ARL	Hao Sun (MS, Emch)
Component Mode Synthesis for Reduced-Order Structural Acoustic Models with F.S. Gandhi	Kati Hufnagel (MS)
Piezoelectric Sensors for Acoustic Intensity and Impedance PCB Piezotronics, NSF Phase II SBIR with G.H. Koopmann	Steve Sharp (PhD, Acoustics)
A Tunable PiezoceramicVibration Absorber Office of Naval Research	Chris Davis (PhD)