USA flag logo/image

An Official Website of the United States Government

Acoustic Emission Sensor for Spacecraft Applications

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
63827
Program Year/Program:
2003 / SBIR
Agency Tracking Number:
022855
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
LOS GATOS RESEARCH
67 E EVELYN AVE STE3 Mountain View, CA 94041-1529
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2003
Title: Acoustic Emission Sensor for Spacecraft Applications
Agency: NASA
Contract: NAS1-03041
Award Amount: $69,999.00
 

Abstract:

Sensors offering accurate real-time monitoring and prediction of damages on vehicle subsystems are important for NASA to reduce both time and costs required for operations involving vehicle inspection. Fiber Bragg Gratings are promising candidates for such sensors because of their high sensitivity in detecting crack growth in metals, delaminations in fiber composites, and chemical degradation. While silica based fiber sensors have been developed for spacecraft strain and stress monitoring , they lack the sensitivity required for advanced monitoring applications, such as detecting weak acoustic wave signals initiated by aerospace structure?s micro-cracks in a noisy, vibrating environment experienced by space systems. Los Gatos Research proposes a high performance acoustic emission sensor based upon inscribing surface relief Bragg gratings in polymer waveguides. The combined superior mechanical property of polymer waveguides and inherent wavelength-encoded nature of the output of waveguide Bragg gratings offer a cost-effective, high detection sensitivity solution to NASA?s Vehicle Health Monitoring program. The Phase I program will demonstrate the acoustic emission response by the polymer waveguides and their applications for real-time monitoring and prediction of damages on vehicle subsystems.

Principal Investigator:

An-Dien Nguyen
Principal Investigator
6509653459
a.d.nguyen@lgrinc.com

Business Contact:

Anthony O'Keefe
President
6509657780
a.okeefe@lgrinc.com
Small Business Information at Submission:

Los Gatos Research
67 East Evelyn Avenue, Suite 3 Mountain View, CA 94041

EIN/Tax ID: 770358688
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No