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首页> 外文会议>Annual Symposium on Quantitative Nondestructive Evaluation; 19980719-24; Snowbird,UT(US) >A GENERAL PURPOSE APPROACH TO CALCULATING THE LONGITUDINAL AND FLEXURAL MODES OF MULTI-LAYERED, EMBEDDED, TRANSVERSELY ISOTROPIC CYLINDERS
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A GENERAL PURPOSE APPROACH TO CALCULATING THE LONGITUDINAL AND FLEXURAL MODES OF MULTI-LAYERED, EMBEDDED, TRANSVERSELY ISOTROPIC CYLINDERS

机译：计算多层，嵌入式，横贯各向同性的圆柱体的纵向和挠性模态的通用方法

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摘要

Disperse, the general purpose program developed by the authors for calculating dispersion curves, has been expanded to allow the wave propagation in transversely isotropic cylinders to be modeled. This extension takes advantage of a wave potential method originally developed by Mirsky and the global matrix method originally developed by Knopoff to model axi-symmetric and non-axi-symmetric wave propagation in systems comprised of multiple layers. With this implementation, the wave propagation solution can be obtained even when the structure is immersed in a fluid or embedded within a solid. This flexibility combined with the accuracy of treating materials as transversely isotropic will allow the study of a wide range of systems. Examples of two such systems, a carbon fiber in water and a SiC-C fiber in titanium, have been shown. Tests on these types of systems could be used for both defect detection or for material characterization, such as determining the elastic constants of the fiber or the properties of the interface between the fiber and the surrounding material.
机译：作者开发的用于计算色散曲线的通用程序Disperse已得到扩展，可以对横向各向同性圆柱体中的波传播进行建模。这种扩展利用了Mirsky最初开发的波势方法和Knopoff最初开发的全局矩阵方法来对由多层组成的系统中的轴对称和非轴对称波传播进行建模。通过这种实现，即使将结构浸入流体中或嵌入固体中，也可以获得波传播解决方案。这种灵活性与将材料作为横向各向同性的精度相结合，将可以研究各种各样的系统。已经示出了两个这样的系统的示例，水中的碳纤维和钛的SiC-C纤维。对这些类型的系统的测试可用于缺陷检测或材料表征，例如确定纤维的弹性常数或纤维与周围材料之间的界面性质。

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