TECHNOLOGY & PATENTS:
Vibration Control by Confinement (VCC)
Energy Flow Control (EFC)
USA and International Patents
- 14 years of government and commercial projects
- 13 U.S. and international patents
- Expertise in noise/vibration/acoustics/shock analysis and control
- Capabilities in modeling simulation and analysis
- Capabilities in testing and evaluation
- Capabilites in field data collection and analysis
- Ability to secure government funds for R&D projects ($2.5 billion funding pool)
- Ability to secure sole source phase 3 awards
Publications
Abstract
Title: On the Design and Performance of An Energy Based Smart Skin Structure
Author: Daryoush Allaei (QRDC, Inc.), and Robert Maday (QRDC, Inc.)
The goal of this project was to design, fabricate, and evaluate a fully functional prototype of an Energy Based Smart Skin Structure (EBS3) with embedded energy steering capability suitable for load-bearing skin structure applications. The proposed smart skin has noise and vibration control strategy that relies on the vibration energy management concept. The vibration control system is comprised of both passive and active elements each of which has two functions. The passive elements are utilized for energy dissipation at high frequencies and energy absorption at resonance frequencies of a skin structure. Constrained layer damping and tuned-mass dampers are the initial candidates for passive elements during the feasibility study. The active elements dissipate energy at low frequencies and steer vibration energy to specified regions at which excess energy can be most effectively absorbed or dissipated by passive or active elements. PZT-based actuators are the initial candidates for active elements. The EBS3 system has the capability of steering their excited vibration energy in the most efficient and effective manner in order to minimize the damaging effects and/or radiated noise of propagating vibrations. In this paper, the preliminary results will be discussed. It will be shown that vibration energy may be steered to a set of selected regions and vortex power flows may be generated.
Abstract
Title: On the Design and Performance of An Energy Based Smart Skin Structure
Author: Daryoush Allaei (QRDC, Inc.), and Robert Maday (QRDC, Inc.)
The goal of this project was to design, fabricate, and evaluate a fully functional prototype of an Energy Based Smart Skin Structure (EBS3) with embedded energy steering capability suitable for load-bearing skin structure applications. The proposed smart skin has noise and vibration control strategy that relies on the vibration energy management concept. The vibration control system is comprised of both passive and active elements each of which has two functions. The passive elements are utilized for energy dissipation at high frequencies and energy absorption at resonance frequencies of a skin structure. Constrained layer damping and tuned-mass dampers are the initial candidates for passive elements during the feasibility study. The active elements dissipate energy at low frequencies and steer vibration energy to specified regions at which excess energy can be most effectively absorbed or dissipated by passive or active elements. PZT-based actuators are the initial candidates for active elements. The EBS3 system has the capability of steering their excited vibration energy in the most efficient and effective manner in order to minimize the damaging effects and/or radiated noise of propagating vibrations. In this paper, the preliminary results will be discussed. It will be shown that vibration energy may be steered to a set of selected regions and vortex power flows may be generated.
125 Columbia Court, Suite 6, Chaska, MN 55318
phone 952.556.5205 | fax 952.556.5206
email arash@qrdc.com
phone 952.556.5205 | fax 952.556.5206
email arash@qrdc.com