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不同增强材料的环氧复合材料的低速冲击响应与拉伸强度

Low Velocity Impact Response and Tensile Strength of Epoxy Composites with Different Reinforcing Materials.

作者信息

Sławski Sebastian, Szymiczek Małgorzata, Kaczmarczyk Jarosław, Domin Jarosław, Świtoński Eugeniusz

机构信息

Department of Theoretical and Applied Mechanics, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland.

Department of Mechatronics, Silesian University of Technology, Akademicka 10a, 44-100 Gliwice, Poland.

出版信息

Materials (Basel). 2020 Jul 8;13(14):3059. doi: 10.3390/ma13143059.

DOI:10.3390/ma13143059
PMID:32650554
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7412279/
Abstract

This paper presents the results of research concerning multilayered epoxy composites reinforced with different materials. The strength of multilayered composites depends, to a large extent, on the reinforcing material. The authors decided to compare the low velocity impact response and perform tensile strength tests on several composites, to ascertain the mechanical properties of the prepared composites. Five different reinforcing materials were provided for the research (two fabrics made from aramid fibers, two fabrics made from carbon fibers and one fabric made from polyethylene fibers). The composites were manufactured by the vacuum supported hand laminating method. The low velocity impact response tests were conducted with the use of a pneumatic launcher. Three strikers with different geometry (conical striker, hemispherical striker and ogival striker) were used. A comparison of the resulting damage to the composites after the impact of the strikers was based on the images obtained using an optical microscope; tensile tests were also performed. The experimental investigation showed significant differences in the mechanical properties of the composites, depending on the applied reinforcing material. It was found that, as a result of the impacts, less damage occurred in the composites which were characterized by a lower Young's modulus and a higher tensile strength.

摘要

本文介绍了关于不同材料增强的多层环氧复合材料的研究结果。多层复合材料的强度在很大程度上取决于增强材料。作者决定比较几种复合材料的低速冲击响应并进行拉伸强度测试，以确定所制备复合材料的力学性能。为该研究提供了五种不同的增强材料（两种由芳纶纤维制成的织物、两种由碳纤维制成的织物和一种由聚乙烯纤维制成的织物）。复合材料采用真空辅助手糊成型法制造。低速冲击响应测试使用气动发射器进行。使用了三种不同几何形状的撞针（圆锥形撞针、半球形撞针和卵形撞针）。基于使用光学显微镜获得的图像，对撞针冲击后复合材料产生的损伤进行了比较；还进行了拉伸测试。实验研究表明，取决于所应用的增强材料，复合材料的力学性能存在显著差异。研究发现，由于冲击，在具有较低杨氏模量和较高拉伸强度的复合材料中发生的损伤较少。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fcce/7412279/825b303f625a/materials-13-03059-g015.jpg
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