THE QUASI-STATIC APPROXIMATION FOR CRACKED INTERFACES IN LAYERED SYSTEMS

机译：分层系统中裂纹界面的准静态逼近

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For the last two decades the quasi-static approximation (QSA) has been the most commonly used approach for describing the interaction of ultrasonic waves with imperfect interfaces. The QSA is a low-frequency approximation and it can be used when the thickness of the interface is much smaller than the wavelength of the waves used to inspect the interface. Its most complete formulation has been presented by Baik and Thompson, and models the real interfacial imperfections as continuous, uniform distributions of springs and masses along the interface plane (see Fig 1).

机译：在过去的二十年中，准静态逼近（QSA）是描述超声波与不完善界面相互作用的最常用方法。 QSA是一种低频近似，可以在界面的厚度远小于用于检查界面的波的波长时使用。 Baik和Thompson提出了最完整的公式，并将真实的界面缺陷建模为沿界面平面连续分布的弹簧和质量均匀分布（见图1）。

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来源
《Annual Symposium on Quantitative Nondestructive Evaluation; 19980719-24; Snowbird,UT(US)》|1998年|P.1471-1478|共8页
会议地点 SnowbirdUT(US)
作者
C. Pecorari; P. Kelly;
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Institute for Advanced Materials European Commission PO Box 2, 1755 ZG Petten (NL);

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原文格式 PDF
正文语种 eng
中图分类无损探伤仪器;
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THE QUASI-STATIC APPROXIMATION FOR CRACKED INTERFACES IN LAYERED SYSTEMS

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