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Dynamic Strain and Crack Monitoring Sensor

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
77778
Program Year/Program:
2006 / SBIR
Agency Tracking Number:
054894
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
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2006
Title: Dynamic Strain and Crack Monitoring Sensor
Agency: NASA
Contract: NND06AA30C
Award Amount: $69,960.00
 

Abstract:

The development of condition-based monitoring sensor network systems has the potential to provide an enhanced aircraft safety by real time assessment of the aircraft's structural integrity. Los Gatos Research proposes to develop a structural health monitoring sensor system, capable of simultaneously monitoring dynamic strain and structural damages in aircraft components in real time. Our novel sensor technology offers a number of advantages including compactness (0.2mm x 5mm x 5mm), lightweight (few grams), low cost, and fast response (milliseconds). We achieve this by fabricating Bragg gratings on stress-sensitive polymer planar waveguides on a flexible substrate, which is capable of measuring stress, strain, and temperature, and monitoring damages in advanced material structures. In Phase I, using a DFB laser with a feedback control we will demonstrate the sensor's capability to measure both static and dynamic strain with large dynamic range, high accuracy and high sensitivity. In addition, combing the low-cost laser-based demodulation technique and an acousto-ultrasonic method we will demonstrate the polymer gratings' capability to monitor ultrasonic stress waves indicating the presence and severity of damages in a metal structure, when the structure is probed by an ultrasonic wave generation actuator device.

Principal Investigator:

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

Business Contact:

Anthony O'Keefe
president
6509657772
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