Comparison of Methods for Estimating Mechanical Properties of Wood by NIR Spectroscopy

Table 4

Summary information (average, standard deviation, maximum, and minimum) for density, modulus of elasticity (MOE), and modulus of rupture (MOR) values for each of the six pine species utilized in this study. One species, Pinus caribaea, included three varieties.

Species	Samples tested	Density (12%)	MOE	MOR
		(kg/m^3)	(MPa)	(MPa)
P. c. bahamensis	47	490, 89	7048, 2668	64, 18.6
		(340, 749)	(2791, 13,791)	(33, 104)
P. c. caribaea	37	445, 65	5930, 2149	55, 15
		(366, 641)	(2883, 10,877)	(26, 96)
P. c. hondurensis	46	507, 112	7027, 2250	59, 13
		(383, 1008)	(3784, 12,130)	(38, 83)
P. chiapensis	50	444, 48	7377, 1431	59, 10
		(360, 551)	(2560, 10,190)	(42, 80)
P. maximinoi	43	522, 72	9011, 2241	68, 14
		(420, 701)	(5641, 14,149)	(47, 103)
P. oocarpa	38	534, 92	7699, 2791	66, 16
		(412, 699)	(4035, 15,433)	(47, 109)
P. taeda	24	515, 73	8015, 2250	61, 14
		(371, 655)	(4219, 11,269)	(36, 88)
P. tecunumanii	49	560, 74	9110, 2448	70, 13
		(464, 785)	(5882, 16,032)	(48, 119)

Note: P. c. = Pinus caribaea variety.