摘要
在应用冲击反射法进行无损估计时 ,应力波波速测量是一项非常重要的工作。本文研究了时间延迟估计方法中用互功率谱的相位谱进行时间延迟估计的算法 ,并将其应用到波速估计中 。
Measurement of wave speed is very important when impact-echo method is applied to NDE of concrete structure.Time delay estimation algorithm which is based on phase spectrum of cross power spectrum density is studied in the paper.The algorithm has been applied to wave speed evaluation and satisfactory results are obtained.
出处
《振动与冲击》
EI
CSCD
北大核心
2003年第4期102-103,104,共3页
Journal of Vibration and Shock
基金
交通部"通达计划"(编号 :95 - 0 6 - 0 2 - 0 4 )资助
