Numerical and experimental study on multi-directional SAFT to detect defects inside plain or reinforced concrete

Chung Yue Wang, Shu Tao Liao, Jian Hua Tong, Chin Lung Chiu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This paper discusses the feasibility of detecting defects inside reinforced concrete (RC) structures by using multi-directional Synthetic Aperture Focusing Technique (SAFT) to create an image which contains the comprehensive information about the geometry of possible defects. This is achieved by scanning the structure in multiple directions and processing the response data with SAFT and proposed scheme so that the shape and the position of a defect or defects can be completely described. The demonstration was carried out in numerical and experimental aspects. Furthermore the correlation between the numerical and experimental results was analyzed in this paper.

Original languageEnglish
Pages (from-to)351-359
Number of pages9
JournalConstruction and Building Materials
Volume76
DOIs
StatePublished - 1 Feb 2015

Keywords

  • Defect image
  • Elastic wave
  • Reinforced concrete NDT
  • SAFT

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