A simple anisotropy correction procedure for acoustic wood tomography
Open Access
- 1 August 2006
- journal article
- Published by Walter de Gruyter GmbH in Holzforschung
- Vol. 60 (5), 567-573
- https://doi.org/10.1515/hf.2006.094
Abstract
Anisotropy of acoustic propagation velocities is a ubiquitous feature of wood. This needs to be considered for successful application of travel time tomography, an increasingly popular technique for non-destructive testing of living trees. We have developed a simple correction scheme that removes first-order anisotropy effects. The corrected travel-time data can be inverted with isotropic inversion codes that are commercially available. Using a numerical experiment, we demonstrate the consequences of ignoring anisotropy effects and outline the performance of our correction scheme. The new technique has been applied to two spruce samples. Subsequent inspection of the samples revealed a good match with the tomograms.Keywords
This publication has 11 references indexed in Scilit:
- Modeling three-dimensional elastic wave propagation in circular cylindrical structures using a finite-difference approachThe Journal of the Acoustical Society of America, 2004
- FEASIBILITY OF ULTRASONIC TOMOGRAPHY FOR NONDESTRUCTIVE TESTING OF DECAY ON LIVING TREESResearch in Nondestructive Evaluation, 2004
- Stochastic regularization: Smoothness or similarity?Geophysical Research Letters, 1998
- Systematic errors in seismic crosshole data: Application of the coupled inverse techniqueGeophysical Research Letters, 1996
- Traveltime computation in transversely isotropic mediaGeophysics, 1994
- Traveltime tomography in anisotropic media-II. ApplicationGeophysical Journal International, 1992
- Seismic traveltime inversion for 2-D crustal velocity structureGeophysical Journal International, 1992
- A dynamic programming approach to first arrival traveltime computation in media with arbitrarily distributed velocitiesGeophysics, 1992
- Ray tracing in factorized anisotropic inhomogeneous mediaGeophysical Journal International, 1989
- Weak elastic anisotropyGeophysics, 1986