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      https://www.ias.ac.in/article/fulltext/sadh/033/06/0767-0779

    • Keywords

       

      Digital image correlation technology; crack observation; masonry structure; deformation measurement.

    • Abstract

       

      The detection of crack development in a masonry wall forms an important study for investigating the earthquake resistance capability of the masonry structures. Traditionally, inspecting the structure and documenting the findings were done manually. The procedures are time-consuming, and the results are sometimes inaccurate. Therefore, the digital image correlation (DIC) technique is developed to identify the strain and crack variations. This technique is non-destructive for inspecting the whole displacement and strain field. Tests on two masonry wall samples were performed to verify the performance of the digital image correlation method. The phenomena of micro cracks, strain concentration situation and nonuniform deformation distribution which could not have been observed preciously by manual inspection are successfully identified using DIC. The crack formation tendencies on masonry wall can be observed at an earlier stage by this proposed method. These results show a great application potential of the DIC technique for various situations such as inspecting shrinkage-induced cracks in fresh concrete, masonry and reinforced concrete structures, and safety of bridges.

    • Author Affiliations

       

      Shih-Heng Tung1 Ming-Hsiang Shih2 Wen-Pei Sung3

      1. Department of Civil and Environmental Engineering, National University of Kaohsiung, Kaohsiung 811, Taiwan
      2. Department of Construction Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 824, Taiwan
      3. Department of Landscape Design and Management, National Chin-Yi University of Technology, Taichung 411, Taiwan
    • Dates

       
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