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在很多领域,如汽车,飞机,土木工程及房屋装饰等,随着对复合材料需求的增长,碳纤维已经成为了一种不可或缺的增强材料。这主要归因于其优异的力学性能,如轻质、高硬度、高强度、抗腐蚀、抗疲劳及优异的结构适用性等。黄麻纤维纯天然有着优异的透气性和吸收性。玻璃纤维也是一种重要的纤维而且已经得到了广泛应用。与碳纤维相比,玻璃纤维的力学性能较低而且密度较大,但是同时它也具有低廉的价格。为了充分利用这些纤维的优势,本研究中使用了混杂织物的增强结构,采用碳纤维-玻璃纤维混杂型粗纱布和玻璃纤维-黄麻纤维混杂型粗纱布作为增强结构,以手糊成型的工艺制备了复合材料。对复合材料不同方向的拉伸试验(0°,5°,15°,45°,90°)进行了测试,并使用声发射系统分析了材料的破坏特征。材料的低周疲劳性能也同样进行了分析和研究。
In many fields, such as automobiles, aircraft, civil engineering and house decoration, carbon fiber has become an indispensable reinforcing material as the demand for composite materials increases. This is mainly due to its excellent mechanical properties, such as light weight, high hardness, high strength, corrosion resistance, fatigue resistance and excellent structural suitability. Jute fiber has excellent natural breathability and absorption. Fiberglass is also an important fiber and has been widely used. Compared with carbon fiber, glass fiber mechanical properties lower and denser, but at the same time it also has a low price. In order to make full use of the advantages of these fibers, the reinforced structure of the hybrid fabric was used in this study. The carbon fiber-glass fiber hybrid coarse gauze and the glass fiber-jute fiber hybrid gauze were used as the reinforcement structure. The hand lay- Composites. Tensile tests (0 °, 5 °, 15 °, 45 °, 90 °) in different directions of composite materials were carried out. The damage characteristics of the materials were analyzed by using acoustic emission system. Low-cycle fatigue properties of the material are also analyzed and studied.