Moderate speed impact damage to 2D-braided glass-carbon composites
Moderate speed impact damage to 2D-braided glass-carbon composites
复制标题
二维编织玻碳复合材料的中速冲击损伤
DOI：
10.1016/j.compstruct.2011.12.026
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发表时间：
2012
影响因子：
6.3
通讯作者：
Sutcliffe M
中科院分区：
文献类型：
--
作者：
Sutcliffe M
用质量为12.5和44.5g的冲击器对不同碳含量的混杂玻璃-碳二维编织复合材料进行了气枪冲击，冲击能量高达50 J。超声C扫描检测到的损伤面积与冲击能量大致呈线性关系，在相同的冲击能量下，冲击器越轻，损伤面积越大。远端侧玻璃丝束的变白区域与测量的C扫描损坏区域相对应。X射线成像显示，在撞击能量相同的情况下，撞击物质量越大，破坏越严重。具有更多玻璃含量的编织物具有适度的密度增加、模量降低以及冲击部位处的C-扫描面积和凹痕深度减少，特别是在较高冲击能量下。发现冲击损伤显著降低抗压强度，在最大冲击能量下降低高达26%。
Hybrid glass–carbon 2D braided composites with varying carbon contents are impacted using a gas gun by impactors of masses 12.5 and 44.5g, at impact energies up to 50J. The damage area detected by ultrasound C-scan is found to increase roughly linearly with impact energy, and is larger for the lighter impactor at the same impact energy. The area of whitening of the glass tows on the distal side corresponds with the measured C-scan damage area. X-ray imaging shows more intense damage, at the same impact energy, for a higher-mass impactor. Braids with more glass content have a modest increase in density, decrease in modulus, and reduction in the C-scan area and dent depth at the impact site, particularly at the higher impact energies. Impact damage is found to reduce significantly the compressive strength, giving up to a 26% reduction at the maximum impact energy.