摘要
将时间逆转多重信号分类算法应用于混凝土结构内部损伤检测中,由换能器单元发射的信号和接收的损伤回波信号构建传递矩阵,并通过对传递矩阵奇异值分解后得到的奇异值反映了损伤的数量与损伤的程度,奇异向量则包含了损伤信息,基于多重信号分类算法结合奇异向量对CS内部结构成像并实现损伤定位,通过数值仿真和实验验证了时间逆转成像方法用于CS损伤检测的可行性,实现了损伤的准确定位。
The time reversal multiple signal classification algorithm can be applied to the damage detection of concrete structure. The transfer matrix is constructed though the transmitted signals and scatter signals obtained by transducer arrays,and then decomposed to get the singular value that reflects the damage quantity and the singular vectors contain the damage information. The concrete structure is imaged by MUSIC algorithm. Numerical simulation and experiments verify the feasibility of the time reversal imaging method for accurate damage detection of concrete structure.
出处
《电子科技》
2015年第12期18-21,共4页
Electronic Science and Technology
基金
国家自然科学基金资助项目(11272138
11402101)
高等学校博士学科点专项科研基金资助项目(20123227130002)
