Compression after impact strength of a buckling resistant tow steered panel
Compression after impact strength of a buckling resistant tow steered panel
复制标题
抗屈曲牵引面板冲击后的压缩强度
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
B. Kim
中科院分区：
文献类型：
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作者：
A. Rhead;R. Butler;Wenli Liu;S. Hallett;B. Kim
一种新型的纤维转向（连续丝束剪切 (CTS)），可消除其他纤维转向技术中发现的制造缺陷，例如最近开发了丝束重叠、丝束间隙和丝束起皱。通过使用 CTS 在平面内引导纤维，可以实现具有更高屈曲能力的结构，从而实现更轻的设计质量。这种最小质量 CTS 层压板的最佳设计是使用无限条带程序 VICONOPT 生产的。由此产生的纤维取向和质量在这些优化层压板宽度上的分布导致支撑附近的高应力区域。这些区域对 CTS 层压板的完整性至关重要，但存在因几乎不可见的冲击损坏 (BVID) 导致抗压强度降低的风险。因此，本文通过实验测试结合独特的分析方法，探讨了近支撑冲击损伤对 CTS 板抗压强度的影响。结果表明，失效应变与工业直光纤替代品相匹配，但低于设计失效应变。因此，CTS 层压板还有进一步优化的空间，以提高损伤容限。
A novel form of fiber steering (Continuous Tow Shearing (CTS)) which eliminates manufacturing defects found in other steered fiber techniques, e.g. tow-overlaps, tow gaps and tow wrinkling, has recently been developed. By using CTS to steer fibers in-plane, structures with improved buckling capacity can be achieved leading to lower mass designs. Such optimal designs for minimum mass CTS laminates have been produced using the infinite strip program VICONOPT. The resulting distribution of fiber orientation and mass across the width of these optimized laminates results in regions of high stress near supports. These regions, which are vital to the integrity of the CTS laminate, are at risk of reduction in compressive strength caused by Barely Visible Impact Damage (BVID). Hence, using experimental tests combined with a unique analytical approach, the paper explores the effect of near support impact damage on the compressive strength of CTS panels. Results indicate a failure strain that matches industrial straight fiber alternatives but that is below the design failure strain. Hence there is scope for further optimization of CTS laminates for improved damage tolerance.
优化的纤维转向和层堆叠，用于弹性定制、耐损伤层压板
DOI：
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发表时间：
2013
期刊：
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影响因子：
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作者：
Liu, W.
通讯作者：
Liu, W.