Meso research on the fiber orientation distribution of aramid fiber‐reinforced rubber composite

Abstract

Aramid fiber-reinforced rubber composites (AFRCs) have attracted considerable attention due to their excellent mechanical properties. These mechanical properties provide the composites with a certain degree of anisotropy due to the fiber orientation distribution (FOD) in the AFRCs, thereby allowing them to flexibly meet requirements based on different scenarios. However, the quantitative determination of FOD in AFRCs continues to be a challenge. In this study, the triple ion-beam cutting technique was proposed to obtain high-quality polished cross-sections of the AFRCs. An image processing technique was used to separate the rubber matrix and the fiber in the optical micrograph. The fiber orientation information was extracted based on the shape of the fiber section. The FODs of the AFRCs were described using the probability function. Finally, the mechanical property was evaluated using a 2D finite element analysis. The agreement between the experimental and numerical results validated the effectiveness of the proposed method.

Effects of printing direction on quasi‐static and dynamic compressive behavior of 3D printed short fiber reinforced polyamide‐based composites

“…Heller et al 29 found a similar result.) Furthermore, it is well known that highly oriented fibers in samples can result in anisotropic mechanical properties, 30,31 so different printing directions that orient fibers in different directions significantly affect mechanical properties of the material.…”

“…Heller et al 29 found a similar result.) Furthermore, it is well known that highly oriented fibers in samples can result in anisotropic mechanical properties, 30,31 so different printing directions that orient fibers in different directions significantly affect mechanical properties of the material. These differences in compressive behavior could be attributed to the different direction of short fibers in specimens printed in different printing directions as described previously.…”