The influence of fibre irregularity on the tensile properties of carbon and glass fibres

Thermal and chemical treatments of recycled carbon fibres for improved adhesion to polymeric matrix

“…Therefore, comparing the results of Figure 5 and Table 4, it is possible to observe the direct correlation between the level of damage and defect accumulation on the fibres and the value of , indicating an increased brittleness arising from the larger number of defects produced by these treatments. 34 Once the value of is known, it is possible to plot the fibre strength as a function of the fibre length for a value of F ¼ 0.5. The results obtained for RCF are reported in Figure 8, showing a very good agreement between experimental data and Weibull model prediction.…”

Recycling of carbon fibre reinforced epoxy resin composites under various oxygen concentrations in nitrogen–oxygen atmosphere

“…The shape factor ˇ reflect the discreteness of tensile strength of carbon fibres. Tensile strength of virgin fibres had large value of ˇ, indicating they has lower dispersity and higher stability and reliability than those of recycled fibres [23]. The size on the origin carbon fibre has been removed during pyrolysis.…”

The Influence of Sample Preparation on the Strength Results ofa Pan-based Carbon Fiber

“…The Weibull Modulus for each configuration tested was calculated according to Eq. (8). The results obtained are summarized in Table 2.…”

“…Most analyses extrapolate fiber mean strength and strength distribution data obtained at longer lengths [5]. The authors [5] consider that the most appropriate extrapolation to short lengths is performed by means of a linear logarithmic dependence of gauge length with the tensile strength, however, in many cases, extrapolating fiber mean strength and strength distribution data obtained at long gauge lengths overestimates the fiber strength at short gauge lengths [8] and has to be examined extremely carefully [5].…”