Damage Prediction in Woven and Non-woven Fabric Composites

Abstract

This chapter presents a step-by-step review on different damage prediction approaches for woven and non-woven fabric composites. First, the characteristics of woven and nonwoven fabrics are distinguished one from another, suggesting more complex analyses required for non-woven fabrics. Then, the subsequent subsections are geared toward a comparison of different approaches utilized in predicting the mechanical behavior and damage mechanisms of these composites at various material scales including micro, meso, and macro. The merits and demerits of each approach with regard to practicality, accuracy, effectiveness, and characterization expense are discussed. Moreover, using recent experimental evidences, the chapter aims to highlight a number of inherent complexities in the interlaced architecture of woven composites, which may not be precisely taken into account by the damage models originally developed for non-woven and unidirectional composites. Finally, two illustrative examples on the effect of the aforementioned complexities on the mechanical behavior of woven composites are presented in more detail, through some recent works of the authors.

Analysis of a two-way tension-shear coupling in woven fabrics under combined loading tests: Global to local transformation of non-orthogonal normalized forces and displacements

“…Among different types of composite reinforcements, woven fabrics have gradually become a material of choice by designers, owing to their high formability, stiffer out-of-plane behavior, and superior delamination resistance compared to unidirectional composite reinforcements [1,2]. Considering this premise, fundamental knowledge and understanding of woven fabrics' forming processes and deformation mechanisms are essential for taking full advantage of their performance in high-volume productions [3].…”

Mechanical Lock Joint for Effective In-Plane Application of Concentrated Loads to Thin Polymer Matrix Laminates

“…A UD laminate can be considered as such, while a laminate reinforced with symmetric fabrics cannot. Application of the Hashin type failure criteria to predict the damage onset in fabric reinforced laminates was questioned in [ 34 , 38 , 39 ]. Furthermore, it was shown that the application of much simpler maximum stress criterion (which is similar to the maximum strain criterion), yielded better results.…”

Touch Position Detection in Electrical Tomography Tactile Sensors Through Quadratic Classifier

“…The sensor is manufactured as a combination between 3 materials (Figure 2). A honeycomb mesh is placed between a highly conductive bottom fabric material from Less EFM [31] and a highresistance piezoresistive fabric material from Eeonyx Corp [32]. By placing the honeycomb mesh, we ensure the top and bottom layer are in contact only when a input touch is applied over the sensor.…”