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A smart multifunctional polymer nanocomposites layer for the estimation of low-velocity impact damage in composite structures

机译：智能多功能聚合物纳米复合材料层，用于估计复合结构中的低速冲击损伤

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摘要

A new smart polymer nanocomposite layer, based on semiconductor Cu_2S nanoparticles embedded into an amorphous polystyrene matrix, was developed for the detection of low-velocity impact damage on composite structures. This material exhibits a combination of optical and electro-magnetic properties, in way that it can be employed to visualize in quick and effective manner barely visible impact damage (BVID). In particular, based on the phenomenon of the photoluminescence, this layer showed specific light emission in the visible range of the electromagnetic spectrum under UV-light excitation at different wavelength. The results of a series of low-velocity impact tests illustrated a visible contrast colour on the damaged area, representing the flaw. In fact, the study of the optical characteristics of this smart material is of particular benefit for fast, cost-effective and in situ damage identification. Hence, once the impact location has been determined, the detailed information of the damage can be further investigated by others non-destructive techniques.
机译：开发了一种新的智能聚合物纳米复合材料层，其基于嵌入无定形聚苯乙烯基质中的半导体Cu_2S纳米颗粒，用于检测复合材料结构的低速冲击损伤。该材料具有光学和电磁特性的组合，可用于以快速有效的方式可视化几乎看不见的冲击损伤（BVID）。特别地，基于光致发光现象，该层在不同波长的紫外光激发下在电磁光谱的可见范围内显示出特定的光发射。一系列低速冲击试验的结果表明，在受损区域上可见的对比色表示缺陷。实际上，对这种智能材料的光学特性的研究对于快速，经济高效地进行原位损伤识别特别有用。因此，一旦确定了撞击位置，就可以通过其他非破坏性技术进一步研究损伤的详细信息。

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  • 来源
    《Composite Structures》 |2010年第8期|p.1913-1919|共7页
  • 作者

    F. Capezzuto; F. Ciampa; G. Carotenuto; M. Meo; Eva Milella; F. Nicolais;

  • 作者单位

    Institute of Composite and Biomedical Materials (IMCB-CNR), National Research Council, Piazzale Tecchio, 80 - 80125 Napoli, Italy;

    Material Research Centre, Department of Mechanical Engineering, University of Bath, Bath, UK;

    Institute of Composite and Biomedical Materials (IMCB-CNR), National Research Council, Piazzale Tecchio, 80 - 80125 Napoli, Italy;

    Material Research Centre, Department of Mechanical Engineering, University of Bath, Bath, UK;

    IMAST s.car.l. - Technology Cluster, P.le E. Fermi, 1 - 80055 Portici (Napoli), Italy;

    Dipartimento di Scienza delta Comunicazione, Universita di Salerno, Via Ponte don Melillo, I-84084, Fisciano, Salerno;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nanocomposites; smart layer; low-velocity impact; fluorescence;

    机译：纳米复合材料智能层低速冲击;萤光;

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