2D finite element modeling of the non-collinear mixing method for detection and characterization of closed cracks
2D finite element modeling of the non-collinear mixing method for detection and characterization of closed cracks
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DOI：
10.1016/j.ndteint.2015.08.001
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发表时间：
2015-12-01
影响因子：
4.2
通讯作者：
Bacon, C.
中科院分区：
文献类型：
--
作者：
Blanloeuil, P.;Meziane, A.;Bacon, C.
非共线混合技术适用于检测和表征的封闭裂纹。该方法是基于两个斜入射产生的横波的非线性相互作用，这将导致一个纵波的散射。一个有限元模型被用来证明其应用于一个封闭的裂纹。接触声学非线性模型采用库仑摩擦单边接触定律。该方法被证明是有效的和有前途的应用时，一个封闭的裂纹。纵波的散射还使我们能够对裂纹进行成像，给出其位置和尺寸。(C)2015爱思唯尔有限公司版权所有。
The non-collinear mixing technique is applied for detection and characterization of closed cracks. The method is based on the nonlinear interaction of two shear waves generated with an oblique incidence, which leads to the scattering of a longitudinal wave. A Finite Element model is used to demonstrate its application to a closed crack. Contact acoustic nonlinearity is modeled using unilateral contact law with Coulomb's friction. The method is shown to be effective and promising when applied to a closed crack. Scattering of the longitudinal wave also enables us to image the crack, giving its position and size. (C) 2015 Elsevier Ltd. All rights reserved.