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Dispersion curves for a natural fibre composite panel: Experimental and numerical investigation

机译:天然纤维复合板的色散曲线:实验和数值研究

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摘要

The design of orthotropic panels, in which some mechanical properties are associated to high degrees of uncertainty, such as for the natural fibres, is very arduous and often techniques that give local information are needed. In this paper a unidirectional flax-polyethylene panel is experimentally and numerically investigated. Experimentally, for a given distance source-receiver, the group velocities are obtained by processing the guided waves time-transient signals via a time-frequency transform leading to an estimation of the dispersion curves for different fibre directions and frequencies. Test results are then compared and used to validate numerical ones, obtained by means of both Finite Element and Wave Finite Element models. (C) 2018 Elsevier Masson SAS. All rights reserved.
机译:正交各向异性板的设计非常艰巨,其中一些机械性能与高度不确定性相关,例如天然纤维,这种设计非常艰巨,并且经常需要提供局部信息的技术。在本文中,对单向亚麻-聚乙烯面板进行了实验和数值研究。实验上,对于给定的距离源-接收器,通过对时波信号进行时频变换处理来获得导波组的速度,从而估算出不同光纤方向和频率的色散曲线。然后将测试结果进行比较,并用于验证通过有限元和波动有限元模型获得的数值结果。 (C)2018 Elsevier Masson SAS。版权所有。

著录项

  • 来源
    《Aerospace science and technology》 |2018年第11期|304-311|共8页
  • 作者

    Petrone Giuseppe;

  • 作者单位

    Univ Naples Federico II, Dept Ind Engn, Aerosp Sect, PASTA Lab,Lab Promoting Experience Aeronaut Struc, Via Claudio 21, I-80125 Naples, Italy;

  • 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

    Natural fibres; Lamb waves; Experiments; Modelling;

    机译:天然纤维;兰姆波;实验;建模;

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