Peeling state assessment of wall tiles by non­-destructive hammering test

Abstract

In this report, we made a tile specimen with pseudo floating part and tried to evaluate the correlation between the data obtained from the subsequent test and the floating condition. The results are reported. (1) From the results of the percussion sound test, it was confirmed that the reflected sound of the tile is determined by the energy applied to the tile surface and the state of the repulsive interface. (2) In the impact elastic wave test, it was found that the state of the defect can be evaluated as the thickness and area of the floating portion are larger.