Paper Title:
Simultaneous Application of Coda Waves Interferometry (CWI) and Nonlinear Resonance (NR) to Detect Damage in Polymer Concrete
  Abstract

In this study, we present the characterisation of damage in polymer concrete using coda waves interferometry (CWI). The latter takes into account the multi-scattered acoustic waves, whose travelling distances are considerably longer than the one corresponding to the direct wave (emitter-receiver direct distance). Experimentally, we prove that CWI is not always appropriate to detect damage. Therefore, we propose an original approach through which the interaction CWI with damage is optimised. This is done using nonlinear resonance (NR) method, where bending modes are excited, at the time when acoustic waves are multi-scattered. Experiments show an important increase in the sensitivity to damage with interesting perspectives in terms of damage location and characterisation.

  Info
Periodical
Advanced Materials Research (Volumes 314-316)
Chapter
Mechanical Behavior & Fracture
Edited by
Jian Gao
Pages
883-889
DOI
10.4028/www.scientific.net/AMR.314-316.883
Citation
S. Toumi, M. Bentahar, C. Mechri, F. Boubenider, R. El Guerjouma, "Simultaneous Application of Coda Waves Interferometry (CWI) and Nonlinear Resonance (NR) to Detect Damage in Polymer Concrete", Advanced Materials Research, Vols. 314-316, pp. 883-889, 2011
Online since
August 2011
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Price
$32.00
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