Impact Loading on Nanocomposites in Thermal Environment

Procedia IUTAM Pub Date : 2017-01-01 DOI:10.1016/j.piutam.2017.06.022

G. Balaganeshan , M. Pushparaja , R. Velmurugan , N.K. Gupta

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引用次数: 13

Abstract

This study investigates energy absorption of thermally loaded composites and nanocomposites laminates during impact loading. The laminates are prepared by glass fiber/epoxy with and without nano particles in the matrix system. Nano clay and carbon nano tube are used as filliers in the epoxy matrix. The composites specimens are subjected to impact loading at 0° C, 30° C and 60° C temperature environments. A gas gun impact testing facility is used for propelling the projectile of mass 7.6 g and diameter 9.5 mm with hemi spherical nose. The initial and residual velocities of projectile are predicted to find the energy absorbing capacity of laminates. The energy absorption and delamination area of the specimens are analyzed and discussed for the laminates with and without clay. Also, the ballistic limit is predicted for the specimens of nanocomposites made with glass fibers and epoxy matrix, and the effect of temperature on impact resistance is discussed. Analytical model is developed and the energy absorption characteristics are also studied.

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热环境下纳米复合材料的冲击载荷研究

研究了热载荷复合材料和纳米复合材料层合板在冲击载荷过程中的能量吸收。用玻璃纤维/环氧树脂制备复合材料，在基体体系中添加和不添加纳米颗粒。采用纳米粘土和碳纳米管作为环氧树脂基体的填料。复合材料试样在0°C、30°C和60°C的温度环境下进行冲击加载。采用气枪冲击试验装置，对质量7.6 g、直径9.5 mm、弹头为半球形的弹丸进行推进。通过对弹丸初始速度和剩余速度的预测，确定了层合板的吸能能力。对含粘土和不含粘土层合板的吸能和分层面积进行了分析和讨论。预测了玻璃纤维和环氧基纳米复合材料试样的抗冲击极限，并讨论了温度对抗冲击性能的影响。建立了分析模型，并对其能量吸收特性进行了研究。

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