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Studies in Stochastic Wave Propagation

Studies in Stochastic Wave Propagation
随机波传播研究
批准号:
8722413
负责人:
Richard Weaver
金额:
$14.0万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1988
资助国家:
美国
项目状态:
已结题
起止时间:
1988-07-15 至 1991-06-30

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中文摘要
翻译
本研究的目的是从理论上和实验上研究相干波和非相干波(扩散波)在随机介质和扩散介质中的演化、输运和衰减。它涉及两项卓有成效的NSF赞助的研究的二维扩展,即随机介质中的一维相干波传播,并应用于声发射源表征,声发射接收器校准和通过内摩擦表征材料。非相干波将上述特性扩展到具有明显微观结构效应的实际材料中。这些研究结果将增加我们对真实材料中波传播的理解,并立即应用于无损评估和声发射技术。
英文摘要
The purpose of this research is to study theoretically and experimentally the evolution, transport and decay of coherent and incoherent waves (diffused waves) in random and diffused media. It involves a two-dimensional extension of two highly fruitful NSF sponsored research on one-dimensional coherent wave propagation in random media with applications to acoustic emission source characterization, to acoustic emission receiver calibration and to material characterization through internal friction. The incoherent wave will extend the above to practical materials with pronounced microstructural effects. The results of these studies will add to our understanding on wave propagation in real materials with immediate applications to nondestructive evaluation and acoustic emission techniques.
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会议论文
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国内基金
海外基金
Development of a Linear Stochastic Model for Wind Field Reconstruction from Limited Measurement Data
  • 批准号:
    --
  • 项目类别:
    --
  • 资助金额:
    40万元
  • 批准年份:
    2020
  • 负责人:
    Vikrant Gupta
  • 依托单位:
基于梯度增强Stochastic Co-Kriging的CFD非嵌入式不确定性量化方法研究