基于共线混频的粘接界面固化非线性超声评价

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (9) : 260-266.

论文

苑博1，税国双1，汪越胜1,2

作者信息 +

Nonlinear ultrasonic evaluation of bonding interface curing based on collinear frequency-mixing

YUAN Bo1, SHUI Guoshuang1, WANG Yuesheng1,2

Author information +

文章历史 +

摘要

共线混频法是一种非常有效的非线性超声检测方法。该方法是利用两列波在介质中的非线性相互作用特性，实现对材料力学性能的无损检测与评价。首先利用有限元软件ABAQUS，对粘接胶层中含随机分布微裂纹的模型进行了共线混频数值模拟，得到了共振波幅值随胶层微裂纹数的变化情况。随后以6061铝合金/改性丙烯酸酯胶/6061铝合金粘接试件为研究对象，采用共线横波和纵波混频检测技术，实验研究了共振波幅值随粘接界面固化时间的变化情况。结果表明，共振波幅值与粘接胶层中随机分布的裂纹数、粘接试件的固化时间之间存在一定的内在联系。随着裂纹数的增加，共振波幅值不断减小；随着固化时间的增加，共振波幅值不断增大，直到固化完成其大小趋于稳定。因此，利用共线混频技术可实现对粘接界面固化过程的有效监测和评价。

Abstract

The collinear wave mixing method is one of the promising non-destructive evaluation methods with nonlinear ultrasonic waves. In this technique, evaluation of the mechanical properties of materials is realized by using the nonlinear interaction between two waves propagating in the medium with damage. The collinear wave mixing detection of bonding specimen with randomly distributed micro-cracks in the adhesive layer was numerically studied using the finite element software ABAQUS; and the variation of resonant wave amplitude with the number of micro-cracks was obtained. Experimental tests were then conducted on the adhesive specimen of aluminum alloy 6061/modified acrylate adhesive/ aluminum alloy 6061; and the variation of resonant wave amplitude with curing time was obtained based on the wave mixing of collinear transverse and longitudinal waves. The results show that there are some internal relations between the amplitude of resonant wave, the number of micro-cracks in the adhesive layer and the curing time of the bonding specimen. The amplitude of resonant wave decreases constantly with the increases of the number of micro-cracks. With increasing curing time, the amplitude of resonant wave increases constantly and tends to be stable until the curing process is completed. Collinear wave mixing technique can be used effectively to monitor and evaluate the curing process of the adhesive.

导出引用

苑博1，税国双1，汪越胜1,2. 基于共线混频的粘接界面固化非线性超声评价[J]. 振动与冲击, 2022, 41(9): 260-266

YUAN Bo1, SHUI Guoshuang1, WANG Yuesheng1,2. Nonlinear ultrasonic evaluation of bonding interface curing based on collinear frequency-mixing[J]. Journal of Vibration and Shock, 2022, 41(9): 260-266

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