摘要
综述了线性及非线性谱分析方法在超声无损检测中的应用 ,给出了快速傅里叶变换及自回归谱分析的基本原理 ,对若干实验结果进行了分析讨论。指出了未来研究的方向。
A review is given of both linear and nonlinear methods of spectral analysis for ultrasonic nondestructive testing. The principle of fast Fourier transform and autoregressive spectral analysis are presented. The results obtained by experiments are discussed. Some suggestions are made of promising directions for future research.
出处
《无损检测》
2001年第2期85-88,共4页
Nondestructive Testing
基金
国家自然科学基金资助项目! (1960 40 10 )
关键词
超声检测
信号处理
傅里叶变换
频谱分析
无损检测
Ultrasonic testing
Signal processing
Model
Fourier transform
Spectral analysis
