Research on the Distribution Rule of Percussion Response Pulse Width in Coin-Tap Test

Table 4

Calculated values of tapping response pulse width at different positions in the defective area.

	Pulse width (ms)
Serial number	1	2	3	4	5	6	7	8	9
(mm)	8	6	4	2	0	2	4	6	8
Defect 1			0.080	0.189	0.225	0.189	0.080
Defect 2	0.349	0.620	0.814	0.930	0.969	0.930	0.814	0.620	0.349
Defect 3	0.162	0.288	0.378	0.432	0.450	0.432	0.378	0.288	0.162