强度与环境
彊度與環境
강도여배경
STRUCTURE & ENVIRONMENT ENGINEERING
2013年
3期
31-35
,共5页
声-超声技术%Lamb波%时频特性%小波再分配尺度谱
聲-超聲技術%Lamb波%時頻特性%小波再分配呎度譜
성-초성기술%Lamb파%시빈특성%소파재분배척도보
acousto-ultrasonic technique%lamb waves%time-frequency characteristics%wavelet reassignment scalogram
基于声—超声技术，对铝板中Lamb波的时频特性进行理论和实验研究，采用小波再分配尺度谱方法对铝板中Lamb波的时频特性进行实验研究和深入探讨，并对铝板中有无模拟损伤的情况做了对比研究和分析，研究相应Lamb波的信号特征，从而实现了铝板结构损伤监测的定性研究。
基于聲—超聲技術，對鋁闆中Lamb波的時頻特性進行理論和實驗研究，採用小波再分配呎度譜方法對鋁闆中Lamb波的時頻特性進行實驗研究和深入探討，併對鋁闆中有無模擬損傷的情況做瞭對比研究和分析，研究相應Lamb波的信號特徵，從而實現瞭鋁闆結構損傷鑑測的定性研究。
기우성—초성기술，대려판중Lamb파적시빈특성진행이론화실험연구，채용소파재분배척도보방법대려판중Lamb파적시빈특성진행실험연구화심입탐토，병대려판중유무모의손상적정황주료대비연구화분석，연구상응Lamb파적신호특정，종이실현료려판결구손상감측적정성연구。
Based on acousto-ultrasonic technique, experimental studies are performed to explore the characteristics of the lamb wave produced in the aluminum plate. Mainly, the wavelet reassignment scalogram analysis is utilized to investigate the propagation characteristic of the lamb wave. Various comparing experiments and theoretical study are performed on the aluminum plates with and without artificial crack damage respectively. Some valuable results are obtained, and this provides some referable basis for further application research of acoustic-ultrasonic technique with respect to the area of the structure health monitoring.
