Three-Dimensional Health Monitoring of Sandwich Composites

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,994.00
Award Year:
2008
Program:
SBIR
Phase:
Phase I
Contract:
NNX08CB21P
Award Id:
87971
Agency Tracking Number:
074021
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2525 Arapahoe Avenue, Bldg. E4, #262, Boulder, CO, 80302
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
112811364
Principal Investigator:
Dr. Robert Owen
Principal Investigator
(303) 530-1248
rowen@extremediagnostics.com
Business Contact:
Dr. Robert Owen
Principal Scientist
(303) 530-1248
rowen@extremediagnostics.com
Research Institution:
n/a
Abstract
This SBIR project delivers a single-chip structural health-monitoring (SHM) system that uses the impedance method to monitor bulk interiors and wave propagation methods to assess surfaces. This Three-Dimensional Health Monitoring (3DHM) unit supports nondestructive evaluation (NDE) systems and evaluates hard shell composites that include sandwich structures. Implications of the innovation Increasingly demanding weight and performance needs move manufacturers to the use of composite materials. New systems are needed to detect incipient damage in composites and identify aging-related hazards before they become critical. Three-dimensional health analyzers that actively examine both bulk interiors and large-scale surface areas address a major problem domain; however, no practical system exists. We address this deficiency by building on our existing SHM system. Technical objectives 3DHM leverages our previous NASA research in SHM. Our current prototype takes the form of a single custom printed circuit board, and is a TRL 5 unit. We have demonstrated bulk interior and limited surface area coverage in Boeing thermal protection system (TPS) tests and on wind turbine bladesýýboth feature composite materials. We extend our surface coverage by adding wave propagation SHM. Our sensor validation includes computer modeling that generates virtual (simulated) data. Research description Phase 1 establishes feasibility for a single-chip approach that combines the impedance method and wave propagation, and demonstrates damage detection on a model composite. Phase 2 completes, validates and demonstrates single chip operation, and delivers an operational unit. Anticipated results Phase 1 establishes 3DHM feasibility by developing a detailed chip development and verification roadmap. Phase 2 delivers an operational unit that monitors and assesses bulk interiors and surfaces of hard shell composites that include sandwich structures.

* information listed above is at the time of submission.

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