Acoustic emission signal source localization on plywood surface with cross-correlation method

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 The data processing results of sound source for point D

Acoustic emission (AE) source	Actual coordinates (X_i, 0)	The time difference of AE signal, µs	Coordinates after calculating (X′_i, 0)	Absolute error (X″_i, 0)	Relative error, %
C	−15	63.453	−14.958	0.042	0.280
	−15	62.643	−14.767	0.233	1.553
	−15	62.834	−14.812	0.188	1.253
	−15	63.525	−14.975	0.025	0.167
	−15	62.889	−14.825	0.175	1.167
D	−5	21.155	−4.987	0.013	0.260
	−5	21.261	−5.012	0.012	0.240
	−5	22.072	−5.203	0.203	4.060
	−5	21.580	−5.087	0.087	1.740
	−5	21.732	−5.123	0.123	2.460
O	0	0.110	0.026	0.026	–
	0	0	0	0
	0	0.687	0.162	0.162
	0	0.106	0.025	0.025
	0	0.369	0.087	0.087
E	5	21.609	5.094	0.094	1.880
	5	35.069	8.267	3.267	65.340
	5	21.011	4.953	0.047	0.940
	5	21.261	5.012	0.012	0.240
	5	21.346	5.032	0.032	0.640
F	10	37.084	8.742	1.258	12.580
	10	42.234	9.956	0.044	0.440
	10	41.942	9.887	0.113	1.130
	10	42.145	9.935	0.065	0.650
	10	41.895	9.876	0.124	1.240
G	17	72.268	17.036	0.036	0.211
	17	56.271	13.265	3.735	21.971
	17	73.622	17.355	0.355	2.088
	17	73.202	17.256	0.256	1.506
	17	74.826	17.639	0.639	3.759