An inexpensive instrument to measure the dynamic response of standing trees to wind loading

A relatively inexpensive caliper type strain-gauge transducer was developed for measuring the dynamic behavior of tree stems and branches subjected to wind loading. Laboratory and field tests showed that the voltage signal produced by the transducer was linearly proportional to the strain it experie...

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Bibliographic Details
Published in:Agricultural and forest meteorology 2005-09, Vol.132 (1), p.78-83
Main Authors: Moore, John R., Gardiner, Barry A., Blackburn, Guy R.A., Brickman, Andrew, Maguire, Douglas A.
Format: Article
Language:English
Subjects:
Agricultural and forest climatology and meteorology. Irrigation. Drainage
Agronomy. Soil science and plant productions
Biological and medical sciences
branches
calipers
dynamic load
Dynamic oscillations
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
measurement
mechanical stress
Strain-gauge transducer
tree damage
tree trunk
trees
wind
Wind loading
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Description
Summary:A relatively inexpensive caliper type strain-gauge transducer was developed for measuring the dynamic behavior of tree stems and branches subjected to wind loading. Laboratory and field tests showed that the voltage signal produced by the transducer was linearly proportional to the strain it experiences, and that in turn this strain was linearly proportional to the displacement of the branches tested. The transducer was also found to be suitable for measuring the dynamic oscillations of trees.
ISSN:0168-1923
1873-2240
DOI:10.1016/j.agrformet.2005.07.007