In Situ Guided Wave Structural Health Monitoring System

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,628.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
NNC05CA40C
Award Id:
72665
Agency Tracking Number:
041194
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
15400 Calhoun Drive, Suite 400, Rockville, MD, 20855
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
161911532
Principal Investigator:
George Zhao
(301) 294-5232
xzhao@i-a-i.com
Business Contact:
Mark James
Contracts Manager
(301) 294-5221
mjames@i-a-i.com
Research Institute:
n/a
Abstract
Corrosion and fatigue induced metal-loss and cracks are common problems for missiles and aircraft structures. A wide range of field conditions such as humidity, temperature, stress, cathode potential, and coating conditions, etc. all contributes to the electrochemical reaction between the incipient corrosive agent molecule and the structural metal matrix. The weakened inter-atomic force leads to the material loss, pits or crack growth and eventually structural failure. We propose a new approach to detect and characterize the corrosion and cracks in missile and aircraft structures. The technique consists of very small, low cost guided wave leave-in-place health monitoring sensors known as piezo-disks, innovative Correlation Analysis Technique (CAT) for fast defect sizing and localization, and a miniaturized local computing device with data acquisition and processing capabilities and wireless module for remote monitoring. It is envisioned the total cost of this system will be less than $1500.

* information listed above is at the time of submission.

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