UGR
  |
> >
Acoustics and Diagnostic of Materials and Structures
(Ref. TEP-232)
23
marzo
2019
marzo 2019
<- ->
L M X J V S D
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31

Motivation

The cost of any forest plantation is directly related to the quality of its wood, which depends on several variables such as the density, orientation of the fibers, mechanical resistance to traction and compression, rigidity, etc. Its evaluation in tstanding ree is a crucial aspect in this process, because besides valuing the platation economically, it can help to make decisions on the moment of cutting the trees.

 

Method

The ultrasound method (UT) is a non-destructive and fast inspection procedure, whose usefulness for the evaluation of tree wood has been widely demonstrated. Using an acquisition and analysis system, the wave generated by a hammer impact can be recorded on a input sensor. This signal is picked up by another sensor at a certain distance (output sensor). With these signals it is possible to separate the propagation modes and determine their propagation speed, which is directly related to the mechanical properties of the wood in the tree.

Services offered

  • Measurement of axial and transversal velocities.
  • Correlation of velocities with the mechanical properties of standing tree wood.
  • Detection of internal defects of the standing log.
  • Studies to monitor the quality of the wood over the years of a plantation.
Desarrollado por: