高应变速率冲击下的聚丙烯纳米复合材料:表征、失效模式和建模

IF 0.3 Q4 MULTIDISCIPLINARY SCIENCES Momona Ethiopian Journal of Science Pub Date : 2018-05-17 DOI:10.4314/MEJS.V10I1.3
Shishay Amare Gebremeskel, Neelanchali Asija, H. Chouhan, N. Bhatnagar
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引用次数: 1

摘要

作为开发轻质纤维增强聚合物(FRP)复合材料防弹衣的一大挑战,候选基体聚合物在高应变速率冲击下的表征是本研究的重点。聚丙烯(PP)和具有1-5%重量NC(纳米粘土)片的纳米复合材料是考虑的候选者。在表征阶段,进行了高应变速率冲击和准静态载荷试验,以得出极限(失效)响应。随后,对材料系统进行比较,以指定一种矩阵配置。在准静态和动态负载下,观察到随着纳米颗粒重量百分比的增加,力学性能增强。还尝试观察分散的外加失效模式,开发新的失效模量模型和评估峰值强度值。关键词:纳米复合材料;冲击行为;分析模型;聚丙烯;失效模式。
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Polypropylene nano-composites at high strain rate impacts: Characterization, failure modes, and modeling
As a major challenge, development of light-weight fibre reinforced polymer (FRP) composite body armour, characterization of candidate matrix polymers at high strain rate impact is the focus in this research. Polypropylene (PP) and the nano-composites with 1-5% by weight of NC (nanoclay) platelets are the candidates considered. In the characterization phase, high strain rate impact and quasi-static loading tests were performed to figure out the limiting (failure) responses. Comparison between the material systems is, subsequently, made to nominate one matrix configuration. Enhancements of mechanical properties with increase in weight percentage of the nanoparticles are observed at both quasi-static and dynamic loadings. Observations of dispersed imposed failure modes, development of novel model for failure modulus and evaluation of peak strength values are also attempted. Keywords : Nano-composite, Impact behaviour, Analytical modelling, Polypropylene, Failure mode.
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来源期刊
Momona Ethiopian Journal of Science
Momona Ethiopian Journal of Science MULTIDISCIPLINARY SCIENCES-
自引率
0.00%
发文量
13
审稿时长
12 weeks
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