Characterization of steel-concrete interface bonding conditions using attenuation characteristics of guided waves

Homin Song, John S. Popovics

Research output: Contribution to journalArticle

Abstract

This paper presents an air-coupled ultrasonic nondestructive evaluation approach based on the attenuation characteristics of guided waves to characterize interface bonding conditions of steel-clad concrete structures. Analytical guided wave modal solutions for various interface bonding conditions are obtained using the global matrix technique. The analytical results indicate that attenuation behavior of the fundamental symmetric (S0) guided wave mode is sensitive to interface bonding condition. A signal processing scheme is proposed to extract a dimensionless damage index, the normalized S0 mode magnitude, which reflects the attenuation behavior of the S0 mode. A series of numerical simulations are performed to verify the utility of the parameter to characterize interface bond condition. The feasibility of the testing approach is then established by experiments on steel-clad concrete specimens with different interface bonding conditions. The numerical simulation and experimental results demonstrate that interface bonding conditions of steel-clad concrete structures can be quantitatively evaluated using the proposed approach.

Original languageEnglish (US)
Pages (from-to)111-124
Number of pages14
JournalCement and Concrete Composites
Volume83
DOIs
StatePublished - Oct 2017

Keywords

  • Air-coupled sensing
  • Attenuation
  • Frequency-wavenumber (f-k) domain signal analysis
  • Global matrix technique
  • Lamb wave
  • Nondestructive testing
  • Ultrasonic scanning

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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