摘要
非线性超声混频无损检测技术是一种新兴的有效的无损检测手段,能够灵活地进行波型转换、选择入射频率、调整混频的传播方向和调整混合区域,具有抗干扰能力强、检测方法灵活度高的独特优势,近年来得到了广泛关注。首先,主要针对体波混合和Lamb波混合的情形,梳理了该技术的理论成果和应用现状;然后,阐述了三阶非线性下混频技术的新成果;最后,提出了值得进一步研究的问题,为该技术的推广应用提供参考。
It is widely concerned in recent years that the nonlinear ultrasonic frequency-mixing nondestructive testing technology, an emerging effective detecting means, can flexibly convert wave modes, select incident frequencies, adjust propagation directions of the mixed frequencies and control mixed areas, with the unique advantages of strong anti-interference performance and high flexibility of detection. To begin with, this paper reviews the current development in theory and application of this technology involving bulk wave mixing and Lamb wave mixing. In addition, the new achievements of the frequency-mixing technology considering cubic nonlinearity are expounded. Lastly, some problems worthy of further study are raised, which is of reference value for promotion and application of this technology.
作者
刘希强
王黎
张瑰
马茹飞
LIU Xiqiang;WANG Li;ZHANG Gui;MA Rufei(Army Engineering University of PLA,Nanjing 210007,China)
出处
《陆军工程大学学报》
2022年第6期73-82,共10页
Journal of Army Engineering University of PLA
基金
军内科研项目(KYJBJQZL1908,JBLZJJ2001)。
关键词
无损检测
超声混频技术
共振条件
微损伤
三阶非线性
nondestructive testing
ultrasonic frequency-mixing technology
resonance condition
micro-damage
cubic nonlinearity
