Flexural behaviour of corrugated panels of self-reinforced polypropylene hybridised with carbon fibre: An experimental and modelling study

Abstract

The present work investigates the influence of the laminate layup on the flexural properties and failure mechanisms of corrugated panels made of self-reinforced polypropylene (SRPP) hybridised with carbon fibre. The influence of the layup on the stiffness and strength of the corrugated hybrid composite panels was much less important than the carbon fibre content. The experimental program was complemented by finite element analysis. The model revealed the importance of SRPP's non-linear behaviour and difference in tensile and compressive behaviour in controlling the flexural properties of corrugated panels. The compressive behaviour of SRPP was characterised to provide reliable input data for the model.

Commercial self-reinforced composites: A comparative study

“…The bending strengths are significantly lower than the tensile properties. This is expected, as the bending strength is significantly influenced by the compressive strength, which tends to be lower than the tensile strength for polymer fibres and their composites [20,44]. SRPET shows a significantly higher bending/tensile strength ratio compared to other SRCs.…”

“…MPa) is about 1.8 times lower than its tensile strength (168±10 MPa). For Curv, Mesquita et al [44] found that the compressive strength of Curv can be up to 4 times lower than its tensile strength. The other SRPP materials are expected to be in line with the results for Curv,…”

Experimental and numerical study of transverse shear modulus for bioinspired glass fiber‐reinforced polymer sandwich core

“…Lt structure with 0 0 orientation has a sizeable energy‐absorbing capacity than traditional honeycombs. The effect of laminate layup on the flexural properties and failure mechanisms of corrugated panels made of self‐reinforced polypropylene (SRPP) hybridized with carbon fiber was investigated by Mesquita et al [ 21 ]…”

“…Lt structure with 0 0 orientation has a sizeable energy-absorbing capacity than traditional honeycombs. The effect of laminate layup on the flexural properties and failure mechanisms of corrugated panels made of self-reinforced polypropylene (SRPP) hybridized with carbon fiber was investigated by Mesquita et al [21] Rebhi et al [22] presented the analytical calculation of the effective shear modulus of composite plates with honeycomb sandwich cores. Schwingshackl et al [23] have shown a dynamic approach to evaluate the transverse shear modulus of the aluminium honeycomb core.…”

Identification and validation of a hyperelastic model for self-reinforced polypropylene draping

“…5, and the tensile stiffness coefficient K t0 and K t are given in Table 1 (5) No experimental data was available for the compressive behaviour (K c ) of SRPP at elevated temperature. It was previously measured that at room temperature K c ≈ K t [41]. However, at elevated temperature SRPP shrinks along the warp and weft axis, and hence is expected to have low compressive modulus.…”