Experimental and analytical characterization of multidimensionally braided graphite/epoxy composites

Finite element modeling and experimental validation of 2D reinforcement braided thin wall structures under internal pressure at various braid angles

“…Many scientists have studied the mechanical properties of braiding and its application in the pressure vessels. Crane and Camponeschi [1] characterized the mechanical properties of a graphite fibre system braided into panels in which two braid parameters could be investigated. The variables investigated included the effect of edge condition and braid pattern on the tensile, compressive and flexural properties of the braided panels.…”

A review on the impact tension behaviors of textile structural composites

“…They can be manufactured into any complex geometrical shape parts, where many mechanical processing and joint can be left out. At the same time, three-dimensional braided composites have rather high delamination resistance and impact damage tolerance [24][25][26][27][28]. Threedimensional braided composites were developed quickly during recent decades because their manufacture process and mechanical properties are much better than two-dimensional laminar composites.…”

“…Li et al developed a series of three-dimensional braided structures such as three-dimensional square structure [33] and three-dimensional five directions structure [34] after 2000. Crane and Camponeschi [35] found that the tension and compression properties of threedimensional braided composites were lower, because most of fiber bundles were curve and they were not along the forced direction. They also found that the braiding angle and fiber bundles size in three-dimensional composites had obvious influence on the Young's modulus and strength of composites.…”

Influence of electrospun nanofibers on the interlaminar properties of unidirectional epoxy resin/glass fiber composite laminates

“…The present study is focused on interleaving epoxy resin based composite laminates with nanofibers, following the idea and the patent of Dzenis [10], who added Polybenzimidazole (PBI) nanofibers to ply-to-ply interfaces and registered a significant improvement in fracture toughness of the whole laminate. While reinforcing fracture toughness of composites, it is shown that nanofibrous reinforces with a proper thickness, does not cause any reduction of in-plane mechanical properties of the laminates [11,12], while other methods such as Z-pin and fiber braiding can decrease these properties significantly [13][14][15][16].…”

“…Nanofibers with a proper thickness are shown not only to reinforce fracture toughness of composites, but also to not cause any reduction of in-plane mechanical properties of the laminates, 11,12 while other methods such as Z-pin and fiber braiding can decrease these properties significantly. [13][14][15][16] Since the patent of Dzenis and Reneker, several papers can be found on composite laminates interleaved with electrospun nanofibers: [17][18][19][20][21][22][23][24][25][26] many polymers have been used and tested so far, [17][18][19][20][21] and Nylon 6,6 was proved to be the most suitable for the purpose of reinforcing epoxy-based composites, due to its good mechanical properties, processability, and high melting temperature, which allows the nanofibers to maintain their morphology during the most common composite's curing processes. 27,28 In the present study, thin Nylon 6,6 nanofibrous sheets have been interleaved into glass fibers/epoxy resin composite laminates with the purpose of investigating the effect of the interleave and, eventually, the mechanism that the nanofibers play into the interface when the sample is loaded under Mode I and Mode II fracture mechanics.…”