Dynamic Strain and Crack Monitoring Sensor

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$556,537.00
Award Year:
2007
Program:
SBIR
Phase:
Phase II
Contract:
NND07AA04C
Agency Tracking Number:
054894
Solicitation Year:
2005
Solicitation Topic Code:
A2.09
Solicitation Number:
n/a
Small Business Information
Los Gatos Research
67 East Evelyn Avenue, Suite 3, Mountain View, CA, 94041-1518
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
928805761
Principal Investigator:
An-Dien Nguyen
Principal Investigator
(650) 965-3459
a.d.nguyen@lgrinc.com
Business Contact:
Anthony O'Keefe
president
(650) 965-3459
a.okeefe@lgrinc.com
Research Institution:
n/a
Abstract
Los Gatos Research proposes to develop a new automated vehicle health monitoring sensor system capable of measuring loads and detecting crack, corrosion, and disbonding in advanced aerospace structures using a novel lock-in laser interrogation technique combined with a Bragg grating array (BGA) technology for strain and guided Lamb wave (GLW) sensing. Los Gatos Research's novel sensor instrumentation offers a number of advantages including sensor compactness (0.2mm x 0.2mm x 10mm), lightweight (few grams), remote data acquisition capability, low-cost, and low power consumption. The inherently reliable lock-in laser demodulation technique permit simultaneous measurements of strain, temperature, and acoustic fields with high resolution and high sensitivity. In Phase I, we have demonstrated feasibility by building a prototype instrument capable of measuring static and dynamic strain, temperature, and ultrasonic waves using a lock-in laser demodulation technique and a fiber Bragg grating array sensor network. In Phase II, LGR will deliver to NASA a rugged, compact, multi-channel instrument optimized for vehicle health monitoring studies including strain, temperature, and crack monitoring with high precision, high resolution, and high sensitivity. This dedicated prototype will include an integrated microcontroller, operate unattended, and address the power and stability requirements unique to in-flight studies.

* information listed above is at the time of submission.

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