Fracture of carbon fibers

Beaumont P.W.R. and Anstice P.D. (1980). A failure analysis of the micro-mechanisms of fracture of carbon fiber and glass fiber composites in monotonic loading. J. Mater. Sci. 15, 2691-2635. 

Mullin J.V. and Mazzio V.F. (1972). The effects of matrix and interface modification on local fractures of carbon fibers in epoxy. J. Mech. Phys. Solids 20, 391—400. 

Figure 8. (a) Schematic structure of carbon fibers and (b) an SEMof a Melblon 3100 fiber showing the fiber and internal structure of a fracture. 

Davies, P. Kausch, H.H., Williams, J.G. and 29 other researchers (1992). Round-robin interlaminar fracture testing of carbon fiber reinforced epoxy and PEEK composites. Composites Sci. Technol. 43, 129-136. 

Harris B., Beaumont P.W.R. and Moncunill de Ferran E. (1971). Strength and fracture toughness of carbon fiber polyester composites. J. Mater. Sci. 6, 238-251. 

Fig. 7.8. (a) Normalized impact fracture toughness and (b) interlaminar shear strength (ILSS) of carbon fiber-epoxy matrix composites as a function of glycidyl acrylate/methyl acrylate (GA/MA) interlayer... 

Fig, 7.16, Impact fracture toughness (O) and interlaminar shear strength (ILSS, ) of carbon fiber-epoxy matrix composites with varying number of nylon sheets as delamination promoters. After Havre (1977). 

Bader M.G., Bailey J.E. and Bell 1. (1973). The effect of fiber-matrix interface strength on the impact and fracture properties of carbon fiber-reinforced epoxy resin composites. J. Phys. D Appi. Phvs. 6, 572-586. 

Favre J.P. (1977). Improving the fracture energy of carbon fiber reinforced plastics by delamination promoters. J. Mater. Sci. 12, 43-50. 

Effect of through-the-thickness stitches on flexural strength and Mode I interlaminar fracture toughness of carbon fiber-epoxy matrix composites manufactured using unidirectional prepregs". 

Kalnin, I. L., and H. Jager (1985). Carbon fiber surfaces—characterization, modification and effect on the fracture behavior of carbon fiber-polymer composites, pp. 62—77. In Fitzer E., ed. Carbon Fibers and Their Composites. Springer-Verlag, New York. 

In the case of good adhesion between fiber and matrix, brittle fracture of the fibers is observed. A further disadvantageous behavior was found in composites used in ultracentrifuges running at high temperature (60). Internal fracturing destroyed the integrity of the matrix, and loss of matrix as carbon dust was observed. These observations led to systematic studies of carbon/carbon composites with hybrid matrices (34). 

The MMD (Mixed Mode Disk) specimen was proposed to investigate the modes I+II fracture behavior of the adhesive interface between concrete and carbon fiber sheets. This specimen, which consists of two concrete blocks inserted carbon fiber sheets and steel jigs, is basically similar to the Arcan specimen, as shown in Fig. 3 [12]. However, the evaluation formula for the Arcan specimen can not be directly applied to the MMD specimen owing to the difference of geometries and the existence of carbon fiber sheets. For the present specimen, the adhesive region was set to be smaller than the face of... 

The production of carbon fibers or filaments by decomposing a hydrocarbon gas over a transition metal catalyst has been the subject of extensive research. The product consists of filaments with diameters in the range of 1-100 pm and lengths up to 100 mm. In microstructure, it is different from traditional carbon fibers, resulting in a sword and sheath fracture mode without catastrophic failure. Since, in addition, these fibers are produced in a single step with no really expensive processing, they are attractive candidates for reinforcing composites. 

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