疲劳裂纹水浸式非线性超声混频检测方法研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (14) : 204-210.

论文

吕洪涛1，焦敬品2，王俊涛1，刘志毅1，李锋1，张祥春1，石亮1

作者信息 +

Water immersion nonlinear ultrasonic wave mixing method for fatigue crack inspection

L Hongtao1,JIAO Jingpin2,WANG Juntao1,LIU Zhiyi1,LI Feng1,ZHANG Xiangchun1,SHI Liang1

Author information +

文章历史 +

摘要

本文对钢材试件疲劳裂纹开展水浸式非共线横波混频检测方法研究。利用搭建的水浸式非共线横波混频检测系统和极性反转信号处理方法，进行疲劳裂纹水浸式非共线横波混频检测实验，研究两列非共线横波相互作用角和频率比对混频效应的影响，在此基础上，开展疲劳裂纹二维自动化扫查检测研究。实验结果表明，极性反转法可有效提取检测信号中的混频效应；疲劳裂纹非共线横波混频检测的最佳相互作用角和频率比与经典非线性超声混频理论的谐振条件发生偏移；非共线横波混频二维扫查方法可对试件中疲劳裂纹进行定位和定量检测。研究工作为非共线超声混频检测方法的工程化应用作出了有益探索。

Abstract

The water-immersion non collinear shear wave mixing method was researched for fatigue crack detection in this paper. Using the developed water-immersion non-collinear shear wave mixing detection system and signal processing method of polarity reversal, the experiments of fatigue crack inspection were carried out, and the influence of the two exciting waves’ interaction angle and frequency ratio on wave mixing effect were studied. Then, the two-dimensional automatic scanning inspection was conducted on the sample blocks with fatigue crack. It is shown that the polarity reversal method can be used for wave mixing effect extraction. The optimal interaction angle and frequency ratio in the case of fatigue crack deviate from the resonance conditions. The fatigue cracks in the steel structure can be detected, located and quantified by using the two-dimensional scanning of shear wave mixing. The work makes a beneficial exploration for the engineering application of nonlinear ultrasonic wave mixing.

导出引用

吕洪涛1，焦敬品2，王俊涛1，刘志毅1，李锋1，张祥春1，石亮1. 疲劳裂纹水浸式非线性超声混频检测方法研究[J]. 振动与冲击, 2023, 42(14): 204-210

L Hongtao1,JIAO Jingpin2,WANG Juntao1,LIU Zhiyi1,LI Feng1,ZHANG Xiangchun1,SHI Liang1. Water immersion nonlinear ultrasonic wave mixing method for fatigue crack inspection[J]. Journal of Vibration and Shock, 2023, 42(14): 204-210

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