摘要
本文将模糊检测技术用于增强强散射材料的超声探伤信号，这里非缺陷散射体引起的结构噪声对缺陷回波干扰较大。我们在模糊检测中选择了互相关、相位差及分数维作为信号的特征量。实验结果表明，这种新方法较之常用的相关检测具有更好的性能。
Abstract: Fuzzy logic detection has been applied to the signal enhancement of ultrasonic flaw echoes from the structure noise due to nonflaw related scattering of ultrasound in highly scattering materials.Cross-correlation, phase difference and fractianal dimension are used as signal characteristics in fuzzy logic detection. Experimental results show that this new method has better performance than the commonly used correlation detection.
出处
《声学学报》
EI
CSCD
北大核心
1997年第5期408-413,共6页
Acta Acustica
基金
国家自然科学基金
关键词
强散射材料
超声探伤信号
模糊检测
Acoustic noise
Acoustic wave scattering
Fuzzy control
Ultrasonic applications
Ultrasonic measurement
