摘要
用散射理论阐明了钢管混凝土中缺陷处透射脉冲频谱变化的机理 .论述了小波分析应用于钢管混凝土完整性检测的依据 ,给出了透射信号频谱变化的特征指标 ,并通过模型试验证实了理论分析的正确性 .通过钢管混凝土表面波检测信号的多尺度小波分析 。
The frequency variation mechanism of transmission impulse resulted from defects in steel-tube-concrete is presented by using dispersion theory. The foundation of applying wavelet theory to analyze the signal of the integrity detection for the steel-tube-concrete is developed. The characteristic values that can express the frequency variation of transmission wave are presented and validated by model tests. By decomposing multi-resolution wavelet to analyze the surface wave detection signal of steel-tube-concrete, the foundation of quantitatively evaluating the defect size is obtained.
出处
《华中科技大学学报（城市科学版）》
CAS
2003年第4期28-30,共3页
Journal of Huazhong University of Science and Technology
关键词
钢管混凝土
完整性检测
透射信号频谱
散射理论
表面波检测
steel-tube-concrete
integrity detection
wavelet analysis
dispersion theory
surface wave detection
