Development and Analysis of a Sustainable Interlayer Hybrid Unidirectional Laminate Reinforced with Glass and Flax Fibres
York Schwieger, Usama Qayyum, Giovanni Pietro Terrasi
TL;DR
This study explores a sustainable hybrid laminate using glass and flax fibers to achieve pseudo-ductile behavior in tensile tests.
Contribution
A new sustainable fiber combination is proposed to achieve pseudo-ductile behavior with reduced environmental impact.
Findings
Repeatable pseudo-ductile stress–strain behavior was achieved with an average strain of 0.52%.
The load reserve after delamination averaged 145.5 MPa, with fiber optic sensors verifying the damage process.
An analytical model was modified to better predict the behavior by neglecting the Weibull strength distribution.
Abstract
In this study, a new fibre combination for an interlayer hybrid fibre-reinforced polymer laminate was investigated to achieve pseudo-ductile behaviour in tensile tests. The chosen high-strain fibre for this purpose was S-Glass, and the low-strain fibre was flax. These materials were chosen because of their relatively low environmental impact compared to carbon/carbon and carbon/glass hybrids. An analytical model was used to find an ideal combination of the two materials. With that model, the expected stress–strain relation could also be predicted analytically. The modelling was based on preliminary tensile tests of the two basic components investigated in this research: unidirectional laminates reinforced with either flax fibres or S-Glass fibres. Hybrid specimens were then designed, produced in a heat-assisted pressing process, and subjected to tensile tests. The strain measurement was…
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Taxonomy
TopicsMechanical Behavior of Composites · Natural Fiber Reinforced Composites · Structural Behavior of Reinforced Concrete