Analysis of Factors Influencing the Bonding Performance at the FFRP-Timber Interface
Yuanyuan Xia, Weilong Zhang, Jianbo Tian, Yangyang Xia
TL;DR
This study examines how adhesive and FFRP thickness affect bonding performance between flax fiber reinforced polymer and timber.
Contribution
The paper reveals the bonding mechanism and effects of adhesive and FFRP thickness on interfacial performance through shear tests.
Findings
Increasing adhesive thickness reduces peak interfacial shear stress by up to 68.6%.
Strain transfer efficiency peaks at 30 fiber layers in the FFRP laminate.
Stress distribution patterns shift from loaded to free end as load increases.
Abstract
Flax Fiber Reinforced Polymer (FFRP), as a green material with nonlinear large deformation characteristics, is used in the reinforcement of timber structures. Due to the similar elastic moduli of FFRP, adhesive, and timber, stress concentration at the interface is significantly reduced, demonstrating favorable interfacial performance. This study investigates the effects of adhesive layer thickness and FFRP laminate thickness on the strain distribution, bond-slip relationship, and stress distribution at the FFRP-timber interface through two different types of single-lap shear tests, thereby revealing the bonding mechanism at the FFRP-timber interface. The results show that both the ultimate load and the ultimate strain at the loaded end decrease with increasing adhesive thickness. For instance, increasing the adhesive thickness from 0.5 mm to 3 mm led to a 68.6% reduction in peak…
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Taxonomy
TopicsWood Treatment and Properties · Bamboo properties and applications · Natural Fiber Reinforced Composites