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Assessing the Effects of Varying Temperature and Relative Humidity Levels on the Fatigue Performance of Flax FRP Composites

Abstract (2025)
Author(s)

V.P. Perruchoud (TU Delft - Bio-based Structures & Materials)

RC Alderliesten (TU Delft - Group Alderliesten)

Yasmine Mosleh (TU Delft - Bio-based Structures & Materials)

Research Group
Bio-based Structures & Materials
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Publication Year
2025
Language
English
Research Group
Bio-based Structures & Materials
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. @en
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Abstract

This study investigates the effects of hygrothermal conditions on the fatigue performance of flax FRP composites. Cross-ply laminates were tested in tension-tension fatigue in five different hygrothermal conditions. Humidity was initially expected to enhance fatigue life at 30% RH and reduce it at 90% RH relative to the reference 50% RH, based on the modulus variations observed in quasi-static tests. However, experimental results indicated the opposite trend, with a remarkable ~10-fold increase in fatigue life under high-humidity conditions. Temperature effects were also found to have a significant impact but only at high temperature and high stresses displayed by a change of the S-N curve slope.

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File under embargo until 18-12-2025