SBIR Phase I: Photonic Sensors for Nondestructive Evaluation Applications

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: 0711269
Agency Tracking Number: 0711269
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: EL
Solicitation Number: NSF 06-598
Small Business Information
DUNS: 928805761
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 An-Dien Nguyen
 (650) 965-3459
Business Contact
 An-Dien Nguyen
Title: PhD
Phone: (650) 965-3459
Research Institution
This Small Business Innovation Research (SBIR) Phase I research project will support the development of a nondestructive inspection and evaluation sensor system, capable of measuring state of strain of advanced materials and structures as well as detecting and locating damages in these materials and structures. The proposed sensors consist of an array of stress sensitive Bragg gratings fabricated in a rosette configuration, which are capable of measuring state of strain, stress, and detecting damage presence and location in advanced structures. In Phase I, the sensor's capability to measure state of strain with large dynamic range, high accuracy and high sensitivity will be demonstrated. In addition, an ultrasonic method we will be used to demonstrate the sensor' capability to detect stress waves indicating the presence and location of damages in a metal structure. The grating rosette sensor, light source, and data acquisition will be controlled by an automated system, capable of determining the state of strain as well as the severity and locations of damages present in the advanced materials and structures. This novel NDE sensor system will offer significant cost saving for both the aviation and civil engineering industries by providing a cost-effective solution for damage evaluation and structural failure analysis in aerospace and civil advanced structures. Advances in the ultrasonic wave sensor technology will permit researchers to utilize this technology to better understand degradation mechanism leading to material failure in large and complex structures. The low-cost, high sensitivity sensor technology will improve public safety as a result of cost-effective structural and material condition evaluation and diagnostics.

* information listed above is at the time of submission.

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