Flexural Characteristics of Bio-Based Sandwich Beams Made of Paper Honeycomb Cores and Flax FRP Skins
Date
2022-07-18T14:21:36Z
Authors
Yuchen, Fu
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Abstract
Sandwich structures have been used for building applications as building envelope and cladding systems. The sandwich structures used today are made of conventional synthetic Fiber Reinforced Polymer (FRP), such as glass fiber and carbon fiber, and synthetic foam core. With the increasing of environmental consciousness, it is important to develop sustainable building materials to replace conventional building materials. The use of bio-based materials for construction is a good way to improve the sustainability of buildings. However, bio-based sandwich structure has not been widely used today. Therefore, it is essential to investigate and understand the characteristics of structures made with bio-based materials. In this study, a total of 6 groups of large-scale bio-based sandwich beams made of flax FRP skins and two types of paper honeycomb core were studied.
Description
In this study, a total of 6 groups of large-scale bio-based sandwich beams made of flax FRP skins and two types of paper honeycomb core were studied. Three identical sandwich beams for each group were tested to obtain the experimental results. The parameters of the tests were skin thickness (1,2 and 3 layers of flax FRP) and core types (namely, hollow and foam-filled). Each specimen was 1200 mm long, 100 mm wide and approximately 80 mm thick and was tested by three-point bending. The failure modes were observed, and the test data were collected and processed. The test results were shown by load-deflection diagrams, and moment-curvature diagrams.
Keywords
Sandwich beams, Bio-based materials, Paper Honeycomb, Flax FRP