Flexural Performance of CFRP-Bamboo Scrimber Composite Beams
- Xizhi Wu1,2, Xueyou Huang3, Xianjun Li1,*, Yiqiang Wu1
1 College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410082, China.
2 Yihua Life Science and Technology Co., Ltd., Shantou, 515000, China.
3 Hunan Special Equipment Inspection and Testing Institute, Changsha, 410082, China.
* Corresponding Author: Xianjun Li. Email: lxjmu@163.com.
(This article belongs to this Special Issue: Bio-composite Materials and Structures)
2 Yihua Life Science and Technology Co., Ltd., Shantou, 515000, China.
3 Hunan Special Equipment Inspection and Testing Institute, Changsha, 410082, China.
* Corresponding Author: Xianjun Li. Email: lxjmu@163.com.
(This article belongs to this Special Issue: Bio-composite Materials and Structures)
Abstract
This study presents a new structure made up of bamboo scrimber and
carbon fiber reinforced polymer (CFRP) to address the low stiffness and strength
of bamboo scrimbers. Three-point bending test and finite element model were
conducted to study the failure mode, strain-displacement relationship,
load-displacement relationship and relationships between strain distribution,
contact pressure and deflection, and adhesive debonding. The results indicated
that the flexural modulus and static flexural strength of the composite beams were
effectively increased thanks to the CFRP sheets. The flexural modulus of the
composite specimens were 2.33-2.94 times that of bamboo scrimber beams, and
the flexural strength were 1.49-1.58 times that of bamboo scrimber beams.
Adhesive debonding had a great influence on the strain distribution and deflection
of the composite specimens. It was an important factor for the failure of the
CFRP-bamboo scrimber composite specimens. According to the finite element
simulation, the strain distribution, contact pressure and deflection also greatly
changed with the adhesive debonding. After complete peeling, the deflection of
the specimen was 3.09 times that of the unpeeled because it was no longer an
integral beam.
Keywords
Bamboo scrimber; carbon fiber reinforced polymer (CFRP); flexural performance; adhesive debonding
Cite This Article
Wu, X., Huang, X., Li, X., Wu, Y. (2019). Flexural Performance of CFRP-Bamboo Scrimber Composite Beams. Journal of Renewable Materials, 7(12), 1295–1307.
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