Comparison of strain measurement techniques for the characterization of brittle, cementitious matrix composites

D. Arboleda, S. Yuan, J. Giancaspro, A. Nanni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Five strain measurement methodologies are described and experimentally compared based on their performance to measure axial strain of brittle matrix composite materials under uniaxial tensile loading, and setup requirements.A clip-on extensometer, electrical strain gages, a laser extensometer, and two Digital Image Correlation (DIC) techniques (edge detection of a painted rectangle and speckle interferometry), are the focus of this investigation. The composite is a novel, fabric-reinforced cementitious matrix (FRCM) system intended for strengthening concrete structures. Instrumentation is not standardized for testing of FRCM materials, so this study is particularly relevant for this field. Results indicate that for this class of composite, both the laser and clip-on extensometers arewell suited for strain measurement,while strain gage measurements are only valid prior to the onset of cracking. Poor results obtained using the DIC technologies are likely attributable to out-of-plane displacement due to specimen curvature and fiber straightening during testing.

Original languageEnglish (US)
Title of host publicationResearch and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013
PublisherTaylor and Francis - Balkema
Pages1567-1572
Number of pages6
ISBN (Print)9781138000612
DOIs
StatePublished - Jan 1 2013
Event5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013 - Cape Town, South Africa
Duration: Sep 2 2013Sep 4 2013

Publication series

NameResearch and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013

Other

Other5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013
CountrySouth Africa
CityCape Town
Period9/2/139/4/13

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering

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  • Cite this

    Arboleda, D., Yuan, S., Giancaspro, J., & Nanni, A. (2013). Comparison of strain measurement techniques for the characterization of brittle, cementitious matrix composites. In Research and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013 (pp. 1567-1572). (Research and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013). Taylor and Francis - Balkema. https://doi.org/10.1201/b15963-282