Dissemin is shutting down on January 1st, 2025

Published in

Elsevier, Composites Part A: Applied Science and Manufacturing, (81), p. 98-104, 2016

DOI: 10.1016/j.compositesa.2015.10.027

Links

Tools

Export citation

Search in Google Scholar

A Hybrid Numerical and Imaging Approach for Characterizing Defects in Composite Structures

Journal article published in 2015 by Rani F. Elhajjar ORCID, Seyedmohammad S. Shams, Gabor J. Kemeny, Gina Stuessy
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Orange circle
Postprint: archiving restricted
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

In this study, a hybrid approach coupling hyperspectral near infrared imaging with a progressive finite element method is proposed for characterization of the elastic and failure response of composites with non-uniform variations of the wrinkles profile through the thickness and across the structure dimensions. In this approach, hyperspectral near infrared spectroscopy is used to create a 3D profile of the surface resin pockets with the capability of measuring resin thickness from approximately 125 to 2500 μm. These resin pockets are directly correlated to underlying ply level wrinkling as confirmed by optical microscopy. The 3D mapped resin plane obtained from the hyperspectral imaging is used to morph a ply-by-ply finite element model of a carbon-fiber/epoxy resin laminated plate using a progressive damage failure methodology. The results show the capability of the hybrid method to predict the structural response in laminated composites containing spatially distributed and non-uniform ply-level wrinkling.