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

Table 2

Pulse width measurement results at different points 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			0.167	0.188	0.230	0.188	0.167
Defect 2	0.563	0.688	0.813	0.875	0.938	0.896	0.813	0.646	0.542
Defect 3	0.271	0.313	0.375	0.438	0.459	0.438	0.396	0.292	0.250