Table 8.

Quantitative results of different types of crack testing based on poisson fusion degree.

Reference crack lengths (mm)	1	2	3	7	8	10
Maximum poisson fusion degree	0.035	0.055	0.052	0.045	0.046	0.043
Quantitative lengths (mm)	1.3	1.95	2.98	7.2	8.3	9.7
Quantitative error (%)	0.23	−0.03	−0.01	0.03	0.04	−0.03
Mean absolute error	0.198
Mean squared error	0.043