Modelling the Bending Behaviour of Novel Fibre-Reinforced Sandwich Structures with Polyurethane Foam Core

Weißenborn, Oliver; Geller, Sirko; Jaschinski, J.; Gude, Μaik

doi:10.1088/1757-899x/416/1/012073

Cited by 1 publication

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By manipulating the pressure conditions during the process, the pore content in the face sheets can be influenced. A roving impregnation of 84% and thus a pore volume of 16% were achieved at 770 kg/m 3 foam density [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Studies conducted by Hopmann et al [16,17] and Weißenborn et al [14,15] showed an uncontrolled penetration of foam pores into the face sheets that lower the mechanical performance. Furthermore, relatively high foam densities (e.g., 770 kg/m 3 [14,15]) are necessary for sandwich manufacturing, which decreases the potential of being light weight. This leads to the need for a more efficient and robust one-step manufacturing technology for a CFRP sandwich structure production.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Direct Sandwich Composite Molding (D-SCM) Process: Sandwich Manufacturing and Characterization

et al. 2022

View full text Add to dashboard Cite

Sandwich structures benefit from the geometrical stiffening effect due to their high cross-sectional area moment of inertia. Transferred to carbon fiber-reinforced plastic (CFRP) components, the needed amount of carbon fiber (CF) material can be reduced and with it the CO2 footprint. The combination of a light foam core with continuous fiber-reinforced face sheets is a suitable material combination for lightweight design. Traditionally, CFRP sandwich structures with a foam core are manufactured in a two-step process by combining a prefabricated foam core with fiber-reinforced face sheets. However, in addition to the reduction in the used CFRP material, manufacturing processes with a high efficiency are needed. The objective of this paper is the sandwich manufacturing and characterization by using the Direct Sandwich Composite Molding (D-SCM) process for the one-step production of CFRP sandwich structures. The D-SCM process utilizes the resulting foaming pressure during the reactive polyurethane (PUR) foam system expansion for the impregnation of the CF-reinforced face sheets. The results of this work show that the production of sandwich structures with the novel D-SCM process strategy is feasible in one single manufacturing step and achieves good impregnation qualities. The foam density and morphology significantly influence the core shear properties and thus the component behavior under a bending load.

show abstract

Section: Introductionmentioning

confidence: 99%