Fibre/matrix stress transfer through a discrete interphase: 2. High volume fraction systems

The effect of temperature on stress transfer between a broken fibre and the adjacent fibres in unidirectional fibre composites

“…Ochiai et al [49] also concluded that the inclusion of such local matrix yielding in the model decreases the SCF in the adjacent fibres and results in a better agreement between the experimental and analytical results. The elasto-plasticity of the matrix has been incorporated into finite element models by other authors [21,22] and led to a significantly lower strain concentration factor in comparison to the elastic case. In contrast, it has been shown elsewhere [23] that matrix plasticity resulted in a slight decrease in the SCF and it was concluded that the SCF was mainly affected by the number of surrounding fibres.…”

“…Nedele et al [18,20] introduced a 3D FE model containing elastic fibres and matrix and reported that the stress concentration factor was not significance in the ultimate failure of a UD composite. In another approaches, Fiedler et al [21] and Lane et al [22] studied the load transfer between a fractured fibre and its surrounding intact fibres through linear elastic and linear elastic-ideal plastic matrices. They [21,22] strongly demonstrated the importance of matrix plasticity on the reinforcing efficiency of a broken fibre and on the SCF values.…”

“…In another approaches, Fiedler et al [21] and Lane et al [22] studied the load transfer between a fractured fibre and its surrounding intact fibres through linear elastic and linear elastic-ideal plastic matrices. They [21,22] strongly demonstrated the importance of matrix plasticity on the reinforcing efficiency of a broken fibre and on the SCF values.…”

“…4. The model is consisted of four quarter fibres of 100 µm long placed at the corners of a rectangular prism similar to the models of Fiedler et al [21] and Lane et al [22]. The properties of the transversely orthotropic carbon fibres (Table 1) used in this study were taken from elsewhere [46] and listed in Table 1.…”

Stochastic modelling of tear behaviour of coated fabrics

“…Using the method of unit cells, Gardner et al [1] and Low et al [2] formulated a micromechanical model to characterize the three-phase composites that contain either a homogeneous interphase [1] or a heterogeneous one with property gradients [9] in the thickness direction. Applying fragmentation tests, Hayes et al [10,11] assessed the effect of interphase on the load transfer from matrix to a single fibre. Usually, these models involve complex FEM analysis, requiring a lot of computing resources when dealing with problems involving complex structures and intricate geometry, or nonlinear phenomena.…”