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Nanotubes Could Strengthen Aircraft Skins

机译：纳米管可以增强飞机蒙皮

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Engineers at the Massachusetts Institute of Technology (MIT) are employing carbon nanotubes to stitch together materials that could be used to construct aircraft skins 10 times stronger than current methods. Additionally, advanced composites reinforced with nanotubes would be more than a million times more electrically conductive, "meaning aircraft built with such materials would have greater protection against damage from lightening," says Brian Wardle, an assistant professor in MIT's Department of Aeronautics and Astronautics. Wardle, who spearheaded the effort to write a theoretical paper that will appear in the Journal of Composite Materials, explains that current materials are made up of layers, or plies, of carbon fibers that are held together with a polymer glue thatrncan crack, leading the plies to separate. Past efforts to reinforce the layers by braiding, stitching or weaving the plies together have been "problematic," because the stitches or pins can damage the plies themselves. By using nanotubes to connect the plies, engineers would be placing "the strongest fibers known to humankind in the place where the composite is weakest, and where they're needed most" Wardle says. He adds that the nanotubes should only add "a few percent" to the cost of composites "while providing substantial improvements in bulk multifunctional properties."
机译：麻省理工学院（MIT）的工程师正在使用碳纳米管将材料缝合在一起，这些材料可用来制造比目前方法坚固10倍的飞机蒙皮。麻省理工学院航空与航天系的助理教授布莱恩·沃德尔说，用纳米管增强的先进复合材料的导电性将高出一百万倍，“这意味着用这种材料制造的飞机将具有更好的保护，免受闪电的损害。” Wardle率先撰写了一篇理论文章，并将发表在《复合材料杂志》上。他解释说，当前的材料由碳纤维的层或层组成，这些层或层由碳纤维和能破裂的聚合物胶粘在一起，导致分开。过去通过编织，缝合或编织层片来加强层的努力是“有问题的”，因为针迹或别针会损坏层片本身。通过使用纳米管连接帘布层，工程师将把“人类已知的最坚固的纤维放在复合材料最弱，最需要的地方”。他补充说，纳米管仅应在复合材料的成本上增加“百分之几”，同时又要提供整体多功能性能的实质性改进。

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    《Aviation maintenance》 |2009年第4期|9-9|共1页
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