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Table 6 Coefficients of the regression model for bending strength estimation (Eq. 4)

From: Use of non-destructive test methods on Irish hardwood standing trees and small-diameter round timber for prediction of mechanical properties

Variable

a

b

c

d

e

f

R2

P value

Vel0 TreeSonic

0.0049

4.60

10.18

− 5.04

− 0.21

56.11

0.44

0.002

Edyn0 TreeSonic

0.0015

6.28

4.63

− 7.82

− 0.21

62.95

0.47

0.001

Vel0 MTG

0.0091

5.46

8.46

− 4.28

0.20

42.90

0.46

0.001

Edyn0 MTG

0.0021

7.26

5.02

− 5.09

− 0.18

57.65

0.48

0.001

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Annals of Forest Science

ISSN: 1297-966X