Tensile strength of hybrid composites

Development and Assessment of Polymeric Laminate Blended Composites Reinforced with Bi-Woven Aramidic Fiber

“…According to this theory there is a matrix zone around each filament affected by stress concentration. If the distances between filaments are small enough, the zones join together and form a percolation network, which increase the tensile modulus [11,13,[19][20][21][22][23][24][25][26][27][28][29].…”

“…Yet, much remains to be described in terms of fundamental understanding of ageing and degradation mechanisms in the fields of the repair, strengthening and retrofit of concrete structures. The main short-term damage mechanisms of HFRP composites are known better, while there are many gaps regarding the long-term projections for these mechanisms [16][17][18][19][20][21][22][23][24][25][26][27][28][29]. The effects of coupling constraints are seldom taken into account especially in the field of engineering applications.…”

A statistical analysis of the tensile failure and hybrid effect of an intraply hybrid composite

“…The first observation of the hybrid effect is credited to Hayashi [1]. Later experimental studies [2][3][4][5] have already verified the existence of the hybrid effect. Clearly, the hybrid effect must be quantified in order to explore the excellent properties offered by hybrids and to reveal the laws governing the synergistic effect which is closely related to stochastic flaws and microdamage mechanisms in composites.…”

“…A theory of intraply hybrid composites was introduced with the paper of Zweben [4]. In Zweben's analysis, the failure criterion of an initial low elongation (LE) fiber break followed by at least one of the neighboring overstressed high-elongation (HE) fiber failures was discussed.…”

“…It should be noted that we have not accounted for the hybrid effect induced by the residual thermal strain which is about 10 percent of the failure strain[2][3][4]. If this value is considered, the hybrid effect should be modified to R / = 40.1%.…”