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Transients in circular symmetry; estimation of transverse wave propagation velocity

Axmon, Joakim LU and Sandsten, Maria LU (2000) 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop p.212-216
Abstract
The response of a tree trunk to a hammer blow, measured by sensors positioned around the excited cross section, consists of two kinds of transient mechanical waves: longitudinal P- and transverse S-waves. The aim of this paper is to extract the velocity of the S-waves, using a filtering structure that emphasizes the waves heading in one of the directions along the circumference. By this approach, a more robust estimate of the delay between the channels, compared to, e.g., using the pure discrete Radon transform, is obtained. The method is applied to recordings of a large number of trees, and estimated velocities are reported.
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author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop. SAM 2000
pages
212 - 216
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
2000 IEEE Sensor Array and Multichannel Signal Processing Workshop
conference location
Cambridge, MA, United States
conference dates
2000-03-17 - 2000-03-17
external identifiers
  • scopus:3242701382
ISBN
0-7803-6339-6
DOI
10.1109/SAM.2000.878000
language
English
LU publication?
yes
id
26e74c07-a4b4-4b38-b941-3f08f2433f0c
date added to LUP
2018-03-23 16:07:20
date last changed
2021-01-04 13:29:08
@inproceedings{26e74c07-a4b4-4b38-b941-3f08f2433f0c,
  abstract     = {The response of a tree trunk to a hammer blow, measured by sensors positioned around the excited cross section, consists of two kinds of transient mechanical waves: longitudinal P- and transverse S-waves. The aim of this paper is to extract the velocity of the S-waves, using a filtering structure that emphasizes the waves heading in one of the directions along the circumference. By this approach, a more robust estimate of the delay between the channels, compared to, e.g., using the pure discrete Radon transform, is obtained. The method is applied to recordings of a large number of trees, and estimated velocities are reported.},
  author       = {Axmon, Joakim and Sandsten, Maria},
  booktitle    = {Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop. SAM 2000},
  isbn         = {0-7803-6339-6},
  language     = {eng},
  pages        = {212--216},
  publisher    = {IEEE - Institute of Electrical and Electronics Engineers Inc.},
  title        = {Transients in circular symmetry; estimation of transverse wave propagation velocity},
  url          = {http://dx.doi.org/10.1109/SAM.2000.878000},
  doi          = {10.1109/SAM.2000.878000},
  year         = {2000},
}