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Dissertation/Thesis Abstract

Structural analysis and testing of a carbon-composite wing using fiber Bragg gratings
by Nicolas, Matthew James, M.S., Mississippi State University, 2013, 89; 1536133
Abstract (Summary)

The objective of this study was to determine the deflected wing shape and the out-of-plane loads of a large-scale carbon-composite wing of an ultralight aerial vehicle using Fiber Bragg Grating (FBG) technology. The composite wing was instrumented with an optical fiber on its top and bottom surfaces positioned over the main spar, resulting in approximately 780 strain sensors bonded to the wings. The strain data from the FBGs was compared to that obtained from four conventional strain gages, and was used to obtain the out-of-plane loads as well as the wing shape at various load levels using NASA-developed real-time load and displacement algorithms. The composite wing measured 5.5 meters and was fabricated from laminated carbon uniaxial and biaxial prepreg fabric with varying laminate ply patterns and wall thickness dimensions. A three-tier whiffletree system was used to load the wing in a manner consistent with an in-flight loading condition.

Indexing (document details)
Advisor: Sullivan, Rani W.
Commitee: Myers, Oliver J., Rais-Rohani, Masoud, Richards, William L.
School: Mississippi State University
Department: Aerospace Engineering
School Location: United States -- Mississippi
Source: MAI 51/05M(E), Masters Abstracts International
Subjects: Aerospace engineering
Keywords: Composite aircraft wing, Fiber Bragg gratings, Operational loads, Out-of-plane deflection, Wing shape
Publication Number: 1536133
ISBN: 978-1-303-03797-9
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