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In Situ Evaluation of 3-D Woven Composite Structural Performance Using Fiber…

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2002 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
3TEX, Inc.
109 MacKenan Drive Cary, NC -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2002
Title: In Situ Evaluation of 3-D Woven Composite Structural Performance Using Fiber Optic Sensors
Agency / Branch: DOD / USAF
Contract: F49620-03-C-0006
Award Amount: $250,000.00


"Three-dimensional textile reinforcement architectures with straight in-plane fibers and optimized through thickness fiber content are considered as efficient solutions for the next generation of light weight, damage tolerant, high strength compositesallowing for cost-effective manufacturing solutions. The 3-D weaving process is gentle to the fibers, thus making automated fiber optic sensor insertion feasible. 3-D woven preforms do not allow delamination, thus providing a safe environment for embeddedfiber opric sensors. Principal objectives of the project are (i) develop commercial, automated placement of fiber optic sensors into 3-D woven fabric preforms; (ii) develop resin infusion techniques suitable for processing composite structures withembedded optical sensors; (iii) demonstrate the functionality of embedded sensors in the 3-D woven composite panels with open holes and composite bolted joints, and (iv) validate some of the advanced 3-D stress/strain and failure analysis tools bycomparison with embedded fiber optic sensor data. The effort will include specific modification of current 3-D weaving processes, development of suitable and reliable sensor connectors, manufacturing of open hole and bolted joint composite specimens, theirmechanical testing, and comparison of theoretical versus experimental results. Success of these efforts will validate applicability of fiber optic sensors to continuous health monitoring of composite structures."

Principal Investigator:

Alexander Bogdanovich
Vice President Res., Dev. & Eng.

Business Contact:

R.Bradley Lienhart
President & CEO
Small Business Information at Submission:

3Tex Engineered Fiber Products
109 MacKenan Drive Cary, NC 27511

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
University of Dayton Research Institute
Aerospace Mechanics Division, 300 College Park
Dayton, OH 45469
Contact: Thomas J. Whitney
Contact Phone: (937) 229-3010
RI Type: Nonprofit college or university