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Using local stiffness indicator to examine the effect of honeycombs on the flexural stiffness of reinforced concrete beams
Measurement (2015)
Abstract

Experimental modal analysis was performed on RC beams with honeycombs. The mode shapes were extracted, and the eigenvectors were used in determining the mode shape equations using nonlinear regression. The equation used in the regression was the generalized solution of transverse vibration of a Bernoulli-Euler prismatic beam. By utilizing the regressed phase variable, the global flexural stiffness was evaluated. It was observed that the global stiffness dropped with increasing volumes of the honeycombs in the beam. The results were compared with values computed using the secant modulus from the load-deflection plot obtained upon loading at each load stage and the trend was similar. The local stiffness indicator was used successfully to locate the region of the honeycombs. (C) 2015 Elsevier Ltd. All rights reserved. Link to Full-Text Articles : http://www.sciencedirect.com/science/article/pii/S0263224115000068

Keywords
  • flexural strength,
  • honeycomb,
  • local stiffness indicator,
  • reinforced concrete beam,
  • modal test data,
  • damage detection,
  • crack location,
  • rc beams,
  • identification,
  • parameters,
  • localization,
  • enhancement,
  • laplacian,
  • shapes
Publication Date
March, 2015
Publisher Statement
Ca8yp Times Cited:0 Cited References Count:46
Citation Information
"Using local stiffness indicator to examine the effect of honeycombs on the flexural stiffness of reinforced concrete beams" Measurement Vol. 64 (2015)
Available at: http://works.bepress.com/facultyofengineering_universityofmalaya/174/