Now showing items 1-10 of 14
A planar comparison of actuators for vibration control of flexible structures
(Virginia Tech, 1988-05-12)
A Distributed Active Vibration Absorber (DAVA) for Active-Passive Vibration and Sound Radiation Control
(Virginia Tech, 1998-12-14)
This thesis presents a new active-passive treatment developed to reduce structural vibrations and their associated radiated sound. It is a contribution to the research of efficient and low cost devices that implement the ...
Modeling of multiple layered piezoelectric actuators in active structural control
(Virginia Tech, 1993)
Extracting the Rotational Degrees of Freedom From a Reconstructed Three-Dimensional Velocity Field Along With an Analytical Demonstraton and a Proposed Method for Experimental Verification
(Virginia Tech, 2001-07-16)
A theoretical method for extracting the rotational degrees of freedom from a reconstructed three-dimensional velocity field has been developed. To extract the angular velocities the curl of the translational velocities ...
Vibration localization and statistical energy analysis in coupled systems
(Virginia Tech, 1990-05-15)
<p>,An investigation of the effect of the coupling value and the structural perturbation parameter is conducted on coupled systems. The analysis of a coupled pendulums system results in the analytical expression of the ...
Misalignment Effects of the Self-Tracking Laser Doppler Vibrometer
(Virginia Tech, 2001-05-01)
There are many limitations to the current methods used to measure vibration on rotating structures. These limitations include physical flow blockages, relating the measurement spot to the structure rotation, data processing ...
A Comprehensive Experimental Evaluation of Actively Controlled Piezoceramics with Positive Posistion Feedback for Structural Damping
(Virginia Tech, 2000-03-30)
This study evaluates the effectiveness of actively controlled piezoceramics with positive position feedback (PPF) for reducing structural vibrations. A comparison is made between active control with PPF and a parallel ...
Noise and Degradation Reduction for Signal and Image Processing via Non-adaptive Convolution Filtering
(Virginia Tech, 2013-08-13)
Noise and degradation reduction is of significant importance in virtually all systems where these phenomena are present, specifically in the fields of signal and image processing. The effect of image processing on target ...
Experimentally-Based Analytical Prediction of Structural Vibration
(Virginia Tech, 1997-12-01)
This study evaluates the vibration isolation effect of various mounting systems in a heavy freight locomotive cab, and provides an analytical method for the prediction of structural vibration. The cab is set up in a ...