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首页> 外文期刊>Key Engineering Materials >TRANSMISSION AND REFLECTION COEFFICIENTS FOR DAMAGE IDENTIFICATION IN 1D ELEMENTS
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TRANSMISSION AND REFLECTION COEFFICIENTS FOR DAMAGE IDENTIFICATION IN 1D ELEMENTS

机译：一维元素中的损伤识别的透射系数和反射系数

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摘要

According to the latest research results presented in the literature changes in propagating waves are one of the most promising parameters for damage identification algorithms. Numerous publications describe methods of damage identification based on the analysis of signals reflected from damage. They also include complicated signal processing techniques. Such methods work well for damage localisation, but it is rather difficult to use them in order to estimate the size of damage. It is natural that propagating wave reflects from any structural discontinuity. The bigger the disturbance the bigger part of a propagating wave reflects from it. The amount of energy reflected and transmitted through any discontinuity can expressed as reflection and transmission coefficients. In the literature different application for these coefficients may be found - the most often cited application is connected with localising changes in the geometry of structures. Changes in the coefficients due to cross section variations in rods and beams or due to existence of stiffeners in plates are well documented. However there are no application of using the reflection and transmission coefficients for damage size identification. For this reason the analysis presented in this paper has been carried out.
机译：根据文献中提供的最新研究结果，传播波的变化是损伤识别算法最有希望的参数之一。许多出版物基于对损坏反映的信号的分析来描述损坏识别的方法。它们还包括复杂的信号处理技术。这样的方法对于损坏的定位很有效，但是要估算损坏的大小很难使用它们。传播的波很自然地从任何结构的不连续性中反射出来。扰动越大，传播波的反射部分就越大。通过任何不连续性反射和传输的能量可以表示为反射和传输系数。在文献中可以找到这些系数的不同应用-最常被引用的应用与结构几何的局部变化有关。充分记录了由于杆和梁的横截面变化或由于板中加劲肋而导致的系数变化。但是，没有应用将反射系数和透射系数用于损伤大小识别的应用。因此，本文进行了分析。

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  • 来源
    《Key Engineering Materials》 |2009年第2009期|95-100|共6页
  • 作者

    Marek Krawczuk; Magdalena Palacz; Arkadiusz Zak; Wieslaw Ostachowicz;

  • 作者单位

    Technical University of Gdansk, Faculty of Electrical and Control Engineering, Narutowicza 11/12, 80-952 Gdansk, Poland;

    Technical University of Gdansk, Faculty of Electrical and Control Engineering, Narutowicza 11/12, 80-952 Gdansk, Poland Polish Academy of Sciences, 14 Fiszera Street, 80-952 Gdansk, Poland;

    Polish Academy of Sciences, 14 Fiszera Street, 80-952 Gdansk, Poland;

    Polish Academy of Sciences, 14 Fiszera Street, 80-952 Gdansk, Poland Gdynia Maritime University, Faculty of Navigation, AI. Zjednoczenia 3, 81-345 Gdynia, Poland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    damage identification; love rod theory; finite element method;

    机译：损坏识别;拉杆理论有限元法;

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