The elastic properties of composites reinforced by a transversely isotropic random fibre-network

Abstract

2019. The elastic properties of composites reinforced by a transversely isotropic random fibre-network. Composite Structures 208 , pp.

Auxetic interpenetrating composites: A new approach to non-porous materials with a negative or zero Poisson’s ratio

“…In order to enhance the auxetic behaviour (i.e., a large negative Poisson's ratio), a relatively high value of ⁄ is desired. The elastic properties of composites can be significantly affected by the Poisson's ratio of the matrix material [15][16][17], but are less sensitive to that of the reinforcement material (this may be because the volume fraction of the latter is usually much smaller). As almost all the singlephase solid isotropic materials have a positive Poisson's ratio, a very small Poisson's ratio is desired for the matrix material in order to enhance the auxetic behaviour of the composites.…”

“…With the advance in materials syntheses, experimental measurements and computational simulations, it has been recognised that Poisson's ratio is related to the densification, connectivity, ductility and the toughness of solid materials [14]. It has also been found that the elastic properties of a composite material can be largely affected, thus tuned by the Poisson ratios of the constituent materials [15][16][17]. Cellular materials are often used as filler in sandwich structures.…”

“…When high stiffness/weight ratio, high strength and energy absorption are all demanded, solid composite materials may be a good choice. Compared to the conventional particle reinforced and unidirectional fibre reinforced composites [31][32][33][34], interpenetrating phase composites (IPCs) reinforced by a self-connected network rather than by separated particles or fibres, have been demonstrated to have much better mechanical and physical properties [16,17,[35][36][37][38] than those of their conventional counterparts. When a self-connected auxetic lattice structure or fibre-network is embedded as reinforcement in a matrix with a low positive Poisson's ratio, the composite would have the potential to exhibit auxetic behaviour.…”

Elastic properties and multi-scale design of long carbon fiber nonwoven reinforced plane-based isotropic composite

“…Many scholars have systematically studied the mechanical properties of discontinuous fiber reinforced composite through theoretical, experimental and numerical simulation methods [7,8]. The mean field inclusion method [9,10] or the micromechanical method [11,12] was adopted to predict the elastic modulus of discontinuous fiber reinforced composites.…”

Influence of quadrat characteristics on the evolution of the dispersion effect for fiber–water dispersions

“…9 Natural and manmade fibers are manipulated by methods such as aligning, the formation of random networks, 10 knitting, 11 braiding, 12 weaving 13 and being applied to three-dimensional structures, 14 and are incorporated into the design of various structures to endow different abilities to the materials. Among these structures, random network structures based on mixed fibers provide high filterability, isotropic mechanical properties 15 and uniform density. 16 Therefore, determining how to control and form a uniform fiber network structure to optimize the desirable properties is significant for materials because the fiber dispersion effect is directly related to the final properties of the materials.…”