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首页> 外文会议>International Conference on "Advancements in Aeromechanical Materials for Manufacturing" >Evaluation of tensile, flexural and impact strength of gongura fiber reinforced epoxy composite
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Evaluation of tensile, flexural and impact strength of gongura fiber reinforced epoxy composite

机译：巩膜纤维增强环氧复合材料拉伸，弯曲和冲击强度评价

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摘要

Polymer materials have wide range of applications but as the strength of pure polymers is less than metals, composite materials are preferred. Composite materials comprise of polymers and fiber materials. Synthetic fibers used in the composites have more weight, prone to thermal damages. To overcome this problem natural fibers are used in the composite materials. The natural fibers have almost equal strength to the synthetics. In this work, the mechanical properties of the gongura fiber reinforced epoxy composites are evaluated. The fibers are extracted and they are tested to find the tensile strength and the chemical compositions. The composite specimens are prepared by using the epoxy resin and gongura fibers by hand layup process in cold press moulds. The specimens are then cut according to the ASTM standards for the strength evaluation and the tensile, flexural and the impact strengths of the composite are found. The variation of the strength according to the amount of fiber content present in the composite matrix is analysed. The specimens are prepared with the fiber content with 10%, 15% and 20% of the total weight. From the test results it is found that the tensile strength and the flexural strength increases with the increase in the fiber content. In case of the impact strength the value increased from 10% to 15% but it decreased in the 20% sample. The orientation of the fibers in the composite also plays a major role in the determination of the strength and the properties can be improved by evaluating the strength according to the angular alignment of the fibers. The gongura fibers can also be used along with the synthetic fibers as hybrid composites.
机译：聚合物材料具有广泛的应用，但随着纯聚合物的强度小于金属，优选复合材料。复合材料包括聚合物和纤维材料。复合材料中使用的合成纤维具有更多的重量，容易出现热损坏。为了克服这种问题，本体纤维用于复合材料。天然纤维对合成具有几乎相同的强度。在这项工作中，评估了巩固纤维增强环氧复合材料的力学性能。提取纤维并测试它们以找到拉伸强度和化学组合物。通过在冷压模具中使用环氧树脂和巩固纤维使用环氧树脂和巩固纤维制备复合样品。然后根据强度评价的ASTM标准切割样品，并发现复合材料的拉伸，弯曲和冲击强度。分析了根据复合基质中存在的纤维含量的强度的变化。标本用纤维含量制备，纤维含量为10％，15％和20％的总重量。从测试结果开始，发现拉伸强度和弯曲强度随比纤维含量的增加而增加。在冲击强度的情况下，值从10％增加到15％，但在20％样品中降低。复合材料中的纤维的取向也在测定强度的测定中起主要作用，并且可以通过根据纤维的角度对准来评估强度来改善性能。巩固纤维也可以与合成纤维一起使用，作为杂化复合材料。

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