Dynamic characterisation and modelling of the orthotropic self-reinforced polypropylene used in alternative FMLs

Strain-rate sensitivity and stress relaxation of hybrid self-reinforced polypropylene composites under bending loads

“…Polymer composites are, nowadays, the preferred choice for many lightweight applications due to their high specific properties in terms of strength/weight and stiffness/weight ratio. However, the main drawback of the fibre-reinforced plastics is their low tensile failure strain and the impact performance, due to the brittleness of the reinforcing fibres and thermoset matrices [1][2][3]. Moreover, the long curing process of the thermoset matrix may make the use of these composites economically not feasible [1].…”

“…However, the main drawback of the fibre-reinforced plastics is their low tensile failure strain and the impact performance, due to the brittleness of the reinforcing fibres and thermoset matrices [1][2][3]. Moreover, the long curing process of the thermoset matrix may make the use of these composites economically not feasible [1]. Therefore, self-reinforced thermoplastic composites (SRCs) that combine oriented polymer fibres or tapes of high ductility and the matrix of the same polymer [4] are a good alternative.…”

Hybrid Sandwich Panels: A Review

“…Independent of core thickness, all the samples exhibited similar type of deformation patterns. Iriondo et al [73] carried out the dynamic characterisation and the modelling of the orthotropic selfreinforced polypropylene used in alternative Fibre Metal Laminates (FMLs). The results have been obtained by the DMA test and by the forced vibration test in order to extent the frequency range studied.…”