Table 7.

Selected stiffnesses in DW samples with no perforation and with different flute orientations.

	DW-0-F-00	DW-0-F-15	DW-0-F-30	DW-0-F-45	DW-0-F-60	DW-0-F-75	DW-0-F-90
$A_{11}$ (MPa mm)	3313.8	3250.6	3090.4	2955.2	2912.0	2939.7	2967.5
$A_{22}$ (MPa mm)	2967.5	2939.7	2912.0	2955.3	3090.4	3250.6	3313.8
$A_{33}$ (MPa mm)	1077.8	1127.5	1225.3	1275.9	1225.3	1127.5	1077.8
$D_{11}$ (MPa mm3)	20,242	19,610	17,980	16,221	15,123	14,662	14,556
$D_{22}$ (MPa mm3)	14,556	14,662	15,123	16,220	17,980	19,610	20,242
$D_{33}$ (MPa mm3)	5778.6	6071.8	6634.3	6910.6	6634.3	6071.8	5778.6
$R_{44}$ (MPa mm)	233.13	240.21	246.71	257.56	247.51	242.88	242.28
$R_{55}$ (MPa mm)	242.28	242.88	247.51	257.43	246.71	240.21	233.13