0Cr17Ni4Cu4Nb不锈钢早期损伤非线性驻波法检测

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (13) : 151-157.

论文

颜丙生1，杨明超1，赵俊杰1，汤宝平2，刘自然1

作者信息 +

0Cr17Ni4Cu4Nb stainless steel early damage detection using nonlinear standing wave method

YAN Bingsheng1, YANG Mingchao1, ZHAO Junjie1, TANG Baoping2, LIU Ziran1

Author information +

文章历史 +

摘要

针对非线性超声纵波检测中信号幅值较低、二次谐波不易被有效激发且易受干扰的问题，提出非线性驻波检测方法。分别对0Cr17Ni4Cu4Nb马氏体不锈钢拉伸试件进行非线性超声纵波法和非线性驻波法检测，检测结果表明，相比于非线性超声纵波法，非线性驻波法能够提升信号幅值，有效激发材料内部由于非线性相互作用产生的二次谐波，提高超声信号的信噪比和频谱的频率分辨率，且试验结果与有限元仿真结果基本一致。对0Cr17Ni4Cu4Nb马氏体不锈钢三点弯曲疲劳试件进行非线性驻波检测，在疲劳寿命50%以前，不同疲劳应力下归一化超声非线性系数均随疲劳寿命增加而增大。因此，非线性驻波法能够更好的检测0Cr17Ni4Cu4Nb不锈钢早期损伤。

Abstract

Here, Aiming at problems of lower signal amplitude and secondary harmonic waves being uneasy to be effectively excited and easy to be interfered in nonlinear ultrasonic longitudinal wave detection, a nonlinear standing wave detection method was proposed. The nonlinear ultrasonic longitudinal wave method and the nonlinear standing wave one were used to detect 0Cr17Ni4Cu4Nb martensitic stainless steel tensile specimens, respectively. The detection results showed that compared to the nonlinear ultrasonic longitudinal wave method, the nonlinear standing wave one can raise signal amplitude, effectively excite secondary harmonic waves generated due to non-linear interaction inside material, and improve signal-to-noise ratio of ultrasonic signals and frequency resolution of frequency spectra; the test results are basically consistent to the finite element simulation ones. Three-point bending fatigue specimens of 0Cr17Ni4Cu4Nb martensitic stainless steel were detected with the nonlinear standing wave method. It was shown that when the fatigue time is smaller than the fatigue life of 50%, normalized ultrasonic nonlinear coefficients increase with increase in fatigue life under different fatigue stresses; so the nonlinear standing wave method can better detect early damage of 0Cr17Ni4Cu4Nb stainless steel.

导出引用

颜丙生1，杨明超1，赵俊杰1，汤宝平2，刘自然1. 0Cr17Ni4Cu4Nb不锈钢早期损伤非线性驻波法检测[J]. 振动与冲击, 2019, 38(13): 151-157

YAN Bingsheng1, YANG Mingchao1, ZHAO Junjie1, TANG Baoping2, LIU Ziran1. 0Cr17Ni4Cu4Nb stainless steel early damage detection using nonlinear standing wave method[J]. Journal of Vibration and Shock, 2019, 38(13): 151-157

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