摘要
由于现行方法在压力容器疲劳裂纹无损检测中应用效果不佳,检测准确性较低,并且时效性较差,无法达到预期的检测效果,为此提出基于超声导波技术的压力容器疲劳裂纹无损检测方法。通过对压力容器疲劳裂纹超声导波无损测量,获得超声导波信号,采用ICA算法从混合信号中提取到裂纹超声导波信号,通过对超声导波信号傅里叶变换,提取疲劳裂纹特征,识别检测压力容器疲劳裂纹。经实验证明,设计方法检测与实际交并比在0.9以上,检测时延不超过20 ms,检测准确性和时效性良好,适用于压力容器疲劳裂纹无损检测。
Due to the poor application effect,low accuracy and poor timeliness of the current method in the nondestructive testing of pressure vessel fatigue cracks,a nondestructive testing method for pressure vessel fatigue cracks based on ultrasonic guided wave technology was proposed,The ultrasonic guided wave signal was obtained by nondestructive measurement of the fatigue crack of the pressure vessel,and the ultrasonic guided wave signal was extracted from the mixed signal by ICA algorithm,The characteristics of the fatigue crack were extracted by Fourier transform of the ultrasonic guided wave signal,and the fatigue crack of the pressure vessel was identified and detected,The experimental results show that the design method is more than 0,9,the detection delay is less than 20ms,the detection accuracy and timeliness are good,and it is suitable for non-destructive detection of fatigue cracks in pressure vessels,
作者
罗沅富
Luo Yuanfu(Guangzhou Academy Of Special Equipment And Testing,Guangzhou Guangdong 510000,China)
出处
《机械管理开发》
2025年第5期269-271,274,共4页
Mechanical Management and Development
关键词
超声导波技术
压力容器
疲劳裂纹
ICA算法
傅里叶变换
ultrasonic guided wave technology
pressure vessel
fatigue crack
ICA algorithm
fourier transform
