脱粘界面超声检测信号的小波多分辨率分析与重构  

Multi-resolution analysis and reconstruction of ultrasonic testing signal in adhesive multilayered structure by wavelet transform

作　　者：张建生[1] 李明轩[1] 

机构地区：[1]中国科学院声学研究所,北京100080

出　　处：《声学学报》2001年第3期231-238,共8页Acta Acustica

摘　　要：针对钢－橡胶分层粘接结构的超声检测回波信号，利用小波变换的多分辨率时频特性提出了小波特征参数提取算法，据此在对检测信号进行的时间－尺度分布分析基础上，重构出脱粘界面回波信号的时域和频域特征。实验检测结果表明本文方法在现代工业ＮＤＴ＆Ｅ中的应用有着可喜的前景。The ultrasonic testing signal of multilayered steel-rubber bonded structure, which recorded by our efficient testing systems, was studied by wavelet transform. The characterizations of debond at interface of steel-rubber or rubber-rubber were identified, extracted and synthesized. The results show the model and algorithm is good for NDT & NDE in industry application.

关 键 词：钢-橡胶多层粘接结构 超声检测信号 脱粘界面 小波变换 多分辨率 特征提取 NDT&E 

分 类 号：TB559[理学—物理]