NDLI: Nondestructive measurement of cross-sectional shape of a tree trunk

Content Provider	Springer Nature Link
Author	Koizumi, Akio Ikeda, Keisuke Sawata, Kei Hirai, Takuro
Copyright Year	2011
Abstract	To evaluate windthrow resistance with respect to stem breakage, a nondestructive method for determining the shape of trunk cross sections was developed. In this method, the coordinates of multiple gauge points set on the perimeter of a trunk are calculated by measuring the distances between them. The shape between the gauge points is generated with the use of a profile gauge placed between them. Measurement tests were conducted using profile gauges with lengths of 300 and 900 mm on model specimens with four shape patterns and four different diameters. The accuracy of the estimation was verified by comparing the section modulus calculated for the generated image and for the photograph. The average ratio of section modulus (generated/photo) for all specimens was 0.994, which indicates that the proposed method is highly accurate. The section moduli of hollow trunks can be evaluated using the profile method together with the drill resistance technique on the condition that 26% of the trunk diameter could be drilled without skew.
Starting Page	276
Ending Page	281
Page Count	6
File Format	PDF
ISSN	14350211
Journal	Journal of Wood Science
Volume Number	57
Issue Number	4
e-ISSN	16114663
Language	English
Publisher	Springer Japan
Publisher Date	2011-05-20
Publisher Place	Japan
Access Restriction	Subscribed
Subject Keyword	Nondestructive evaluation Section modulus Windthrow resistance Tree trunk Drill resistance technique Wood Science & Technology Materials Science Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Biomaterials Forestry

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