Defect location of grouting sleeve connection detect using Lamb wave time reversal method
In view of the defect location of grouting sleeve connector in prefabricated buildings,the finite element model of grouting sleeve structure is established,and the propagation rule of grouting sleeve structure is studied by Lamb wave.On the basis of determining the best excitation signal,the damage defect location of the grouting material was detected.Moreover the damage-free and damaged measuring areas were set.The results show that the focusing peak in the damaged area decreased by 11.70%compared with the average value of the focusing peak in the undamaged area,which shows the judgment of the Lamb wave time reversal method.It is effective in locate the defects of grouting sleeve and has good application prospect in the field of structural nondestructive testing.
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