Finite element mesh generation for composites with ply waviness based on X-ray computed tomography

Authors:  Gennadiy Nikishkov, Yuri Nikishkov, Andrew Makeev

Abstract: 
A method for automated generation of finite element meshes for unidirectional composites with waviness defects is proposed. Images used as input for mesh generation are recorded with X-ray computed micro-tomography. Quality and contrast of the scanned images is such that fiber directions cannot be detected everywhere. To generate finite elements mesh that follow fiber directions it is suggested to interpolate available fiber slope data using radial basis functions and to create mesh nodes by integrating ordinary differential equations for fiber slopes. Examples demonstrate practical steps of detecting waviness from volume slice images and generation of meshes that model waviness defects with acceptable accuracy.

Keywords:
Ply waviness
Composite materials
X-ray computed tomography
Image analysis
Mesh generation
Finite element mesh

Published in: Advances Engineering Software (Volume 58, March 2013)

Publisher: Elsevier

ISSN Information: 0965-9978

Finite element mesh generation for composites with ply waviness based on X-ray computed tomography

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