Abstract:

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.

Key words: CS;time reversal;singular value decomposition;MUSIC algorithm