Flatwise compression properties of trapezoidal lattice-web reinforced foam core sandwich composites

被引:0
|
作者
Shi C. [1 ,2 ]
Wang J. [1 ]
Zhu J. [2 ]
Ni A. [3 ]
Li X. [2 ]
机构
[1] School of Materials Science and Engineering, Wuhan University of Technology, Wuhan
[2] Luoyang Ship Material Research Institute, Luoyang
[3] State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan
关键词
Failure mode; Flatwise compression properties; Lattice-web; Sandwich composite; Specific energy absorption;
D O I
10.13801/j.cnki.fhclxb.20210506.002
中图分类号
学科分类号
摘要
Trapezoidal lattice-web reinforced foam core sandwich composites with different structural parameters were designed and manufactured by the vacuum assisted resin infusion (VARI) process. The failure modes and mechanical properties of the sandwich panels in flatwise compression loading were studied experimentally. Also, the effects of structural parameters (specimen size, lattice-web angle, lattice-web thickness) on specific compression strength, specific compression modulus and specific energy absorption were investigated. The results show that the main failure modes of the lattice-web reinforced sandwich panels are the fracture and buckling of lattice-web, and the synergistic enhancement effect between foam core and lattice-web is revealed. Compared with the control specimen, the specific compression strength, specific compression modulus and specific energy absorption of the sandwich panel with 60° lattice-web increase by 89.4%, 137.9% and 45.2%, respectively. The compression properties increase with the increase of the angle and thickness of lattice-web. The conclusions above provide reference for the design and application of lightweight sandwich composites in the ship and ocean engineering. Copyright ©2022 Acta Materiae Compositae Sinica. All rights reserved.
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页码:590 / 600
页数:10
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