Photonic Sensor for Nondestructive Testing of Composite Overwrapped Pressure Vessels

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$598,471.00
Award Year:
2010
Program:
SBIR
Phase:
Phase II
Contract:
NNX10CB16C
Award Id:
90766
Agency Tracking Number:
085055
Solicitation Year:
n/a
Solicitation Topic Code:
O3
Solicitation Number:
n/a
Small Business Information
67 East Evelyn Avenue, Suite 3, Mountain View, CA, 94041
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
928805761
Principal Investigator:
An-DienNguyen
Principal Investigator
(650) 650-3459
a.d.nguyen@lgrinc.com
Business Contact:
AnthonyO'Keefe
CEO
(650) 965-7772
a.okeefe@lgrinc.com
Research Institute:
n/a
Abstract
Los Gatos Research proposes to develop a new automated health monitoring sensor system capable of monitoring distributed load and acoustic emission (AE) for rapid inspection of damages in composite overwrapped pressure vessels (COPV). Our novel sensor technology offers a number of advantages including sensor compactness and lightweight with multiplexing capability for load and AE for monitoring and characterizing damages in advanced composite structures and components. We achieve this by employing Bragg grating sensor arrays and using a novel interrogation technique combined with state-of-the-art AE method to detect and pinpoint composite defects in these structures. In Phase I, we have demonstrated the sensor's capability to measure crack-induced acoustic emissions in a composite overwrapped pressure vessel structure loaded up to rupture pressure. In Phase II, the grating sensors, interrogation system, and diagnostic software will be integrated into an automated system, capable of measuring and correlating the load history, acoustic emission activity, and determining the severity of damages and their location in the COPV. This dedicated prototype will include an integrated fiber optic conditioning hardware, state-of-the-art AE hardware and software, and address the power and stability requirements unique to ground based and in-flight studies.

* information listed above is at the time of submission.

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