Damage Detection in Concrete Elements with Surface Wave Measurements

Abstract

The objective of this research was to assess the ability of surface wave measurements and the SASW technique to detect crack damage in beam and column elements. The damage was detected by a change in the surface wave dispersion curve (phase velocity vs frequency) between undamaged and damaged states. To calculate the dispersion curve, the SASW (Spectral Analysis of Surface Waves) technique was used with response records from two locations. Finite element analysis was used to analytically generate the response records. Experimentally, acceleration measurements were taken. Results showed that the SASW method is one potential method to detect cracks.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1992
Accession Number
ADA252576

Entities

People

  • Britt R. Bowen

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Computational Science
  • Damage Detection
  • Discrete Fourier Transforms
  • Elastic Properties
  • Equations Of Motion
  • Finite Element Analysis
  • Fourier Transformation
  • Frequency Domain
  • Mechanics
  • Modal Analysis
  • Modulus Of Elasticity
  • Periodic Variations
  • Power Spectra
  • Resonant Frequency
  • Three Dimensional
  • Wave Propagation

Fields of Study

  • Environmental science

Readers

  • Facility/Structural Engineering.
  • Plasma Physics / Magnetohydrodynamics
  • Surface Coatings Technology.