Nondestructive Detection of Fiber Waviness in Laminates

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-10-C-0190
Agency Tracking Number: N093-174-0592
Amount: $149,484.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2009
Solicitation Topic Code: N093-174
Solicitation Number: 2009.3
Small Business Information
Numerical Technology Company
120 Annie Cook Way, Roswell, GA, 30076
DUNS: 153339671
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Andrew Makeev
 President
 (404) 840-2378
 andrew.makeev@aerospace.gatech.edu
Business Contact
 Andrew Makeev
Title: President
Phone: (404) 840-2378
Email: andrew.makeev@aerospace.gatech.edu
Research Institution
N/A
Abstract
The Numerical Technology Company and North Star Imaging (NSI) team in this project to develop and verify a Computed Tomography (CT) based technology for accurate three-dimensional measurement and characterization of fiber waviness (wrinkles) in fiberglass/epoxy and carbon/epoxy composite structures. This team is supported by Bell Helicopter Textron who will provide the composite structures for the technology verification. The nondestructive evaluation (NDE) technology will enable: (a) ability to measure wrinkles and porosity in large structures and thick parts such as spars and yokes; and (b) automated three-dimensional wrinkle characterization. Wrinkles and porosity defects as well as their combinations contribute to structural failure. Ability to capture the shape of small wrinkles embedded deep inside a thick glass/epoxy structure as well as detect multiple wrinkles through the thickness will be verified. As wrinkle geometry and porosity distributions in the fatigue-critical composite parts are three-dimensional, accurate 3D measurement ability will be developed. The defect measurements will also converted into 3D finite element models for assessment of effects of the manufacturing defects on structural performance.

* information listed above is at the time of submission.

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