OBTAINING THE DIMENSIONS AND ORIENTATION OF 2D RECTANGULAR FLAKES FROM SECTIONING EXPERIMENTS IN FLAKE COMPOSITES
Loading...
Date
2022
Authors
Papathanasiou, Thanasis D.
Tsiantis, Andreas
Wang, Yanwei
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Composites Science
Abstract
Recently, we developed and reported the statistical validity of two methods for determining
the planar aspect ratios of two-dimensional (2D) rectangular flakes in composites from the statistics
of intersection lengths: one method is based on the maximum intersection length, and the other
on the average intersection length. In this work, we show that these methods are valid and robust
not only for flakes having isotropic, random in-plane orientations, but for the more general situations
of planar orientations ranging from unidirectional (misalignment angle e = 0), to partially aligned
(0 < e < p/2), to flakes of isotropic, random-in-plane orientations (e = p/2). We prove, by Monte
Carlo simulations and by numerical sectioning experiments, the validity of the proposed methods
for characterizing the extent of the partial alignment (the misalignment angle e) of 2D rectangular
flakes in composites, based again on the statistics of the intersection lengths; this information can be
obtained from cross-sections of composite samples used in optical or electron microscopy or using
tomographic imaging techniques. The performance of these techniques was tested using blind
experiments in numerically sectioned composites which contained up to 106 individual flakes, and
was found to be very good for a wide range of flake aspect ratios.
Description
Keywords
Type of access: Open Access, flake composites, microstructure characterization, sectioning technique, orientation alignment, flake dimensions
Citation
Papathanasiou, T. D., Tsiantis, A., & Wang, Y. (2022). Obtaining the Dimensions and Orientation of 2D Rectangular Flakes from Sectioning Experiments in Flake Composites. Journal of Composites Science, 6(5), 142. https://doi.org/10.3390/jcs6050142