Advanced

Damage Identification in Concrete using Impact Non-Linear Reverberation Spectroscopy

Dahlén, Unn LU ; Rydén, Nils LU and Jakobsson, Andreas LU (2015) In Ndt & e International 75. p.15-25
Abstract
High amplitude non-linear acoustic methods have shown potential for the identification of micro damage in brittle materials such as concrete. Commonly, these methods evaluate a non-linearity parameter from the relative change in frequency and attenuation with strain amplitude. Here, a novel attenuation model is introduced to describe the free reverberation from a standard impact resonance frequency test, together with an algorithm for estimating the unknown model coefficients. The non-linear variation can hereby by analyzed over a wider dynamic range as compared to conventional methods. The experimental measurement is simple and fully compatible with the standardized free-free linear impact frequency test.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
on-destructive testing, Impact method, Reverberation spectroscopy
in
Ndt & e International
volume
75
pages
15 - 25
publisher
Elsevier
external identifiers
  • wos:000360864800003
  • scopus:84962252373
ISSN
0963-8695
DOI
10.1016/j.ndteint.2015.04.002
language
English
LU publication?
yes
id
68e1f1ca-54e6-4961-999f-e31b78d2daae (old id 7766732)
date added to LUP
2015-09-09 12:33:18
date last changed
2017-09-10 03:01:08
@article{68e1f1ca-54e6-4961-999f-e31b78d2daae,
  abstract     = {High amplitude non-linear acoustic methods have shown potential for the identification of micro damage in brittle materials such as concrete. Commonly, these methods evaluate a non-linearity parameter from the relative change in frequency and attenuation with strain amplitude. Here, a novel attenuation model is introduced to describe the free reverberation from a standard impact resonance frequency test, together with an algorithm for estimating the unknown model coefficients. The non-linear variation can hereby by analyzed over a wider dynamic range as compared to conventional methods. The experimental measurement is simple and fully compatible with the standardized free-free linear impact frequency test.},
  author       = {Dahlén, Unn and Rydén, Nils and Jakobsson, Andreas},
  issn         = {0963-8695},
  keyword      = {on-destructive testing,Impact method,Reverberation spectroscopy},
  language     = {eng},
  pages        = {15--25},
  publisher    = {Elsevier},
  series       = {Ndt & e International},
  title        = {Damage Identification in Concrete using Impact Non-Linear Reverberation Spectroscopy},
  url          = {http://dx.doi.org/10.1016/j.ndteint.2015.04.002},
  volume       = {75},
  year         = {2015},
}