Investigation of mechanical properties and elucidation of factors affecting wood-based structural panels under embedment stress with a circular dowel II: detailed observation for plywood and OSB using DIC and CT scanning

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 6 Comparisons of density-change probabilities in each region

Layer	d (mm)	Step	Change in density	A	B	C	D	E
(a)
Strong	5.2	PD	Void	0.9	0.2	0	0	0
		PD	Densified	0.9	0.6	0	0	0
		UD	Void	1	0.4	0.8	0	0
		UD	Densified	1	0.9	0.6	0	0
	12	PD	Void	1	0	0	0	0.1
		PD	Densified	1	0.1	0	0	0
		UD	Void	1	0.4	0.7	0.2	0.3
		UD	Densified	1	0.5	0.5	0.1	0.1
Weak	5.2	PD	Void	0.8	0.3	0.2	0.2	0
		PD	Densified	0.9	0	0	0	0
		UD	Void	1	0.3	1	0.9	0.3
		UD	Densified	0.9	0.2	1	0.7	0.1
	12	PD	Void	1	0	0	0	0
		PD	Densified	0.9	0.1	0	0	0
		UD	Void	1	0.1	1	0.5	0.3
		UD	Densified	1	0.6	0.8	0.5	0.1
(b)
Outer	5.2	PD	Void	1	0.125	0.375	0.25	0.125
		PD	Densified	0.5	0.25	0	0.25	0.125
		UD	Void	1	0.625	0.875	0.625	0.75
		UD	Densified	0.5	0.125	0.125	0.25	0.25
	12	PD	Void	1	0	0	0	0.125
		PD	Densified	0.375	0	0	0	0
		UD	Void	1	0	0	0	0.125
		UD	Densified	0.375	0	0	0	0
Inner	5.2	PD	Void	1	0.25	0.5	0.25	0.25
		PD	Densified	0.75	0	0.25	0.25	0
		UD	Void	1	0.5	0.75	0.25	0.25
		UD	Densified	0.75	0	0.5	0.75	0
	12	PD	Void	1	0	0.25	0.25	0
		PD	Densified	1	0	0	0	0
		UD	Void	0.75	0	0.75	0.5	0
		UD	Densified	0.75	0	0.5	0.25	0