Crack depth estimation in concrete using energy transmission of surface waves

Sung Woo Shin, Jinying Zhu, Jiyoung Min, John S. Popovics

Research output: Contribution to journalArticlepeer-review


The self-calibrating surface wave transmission method is a promising nondestructive technique for surface-breaking crack depth inspection of concrete. Determination of crack depth using the cut-off frequency in the transmission function (TRF) is difficult, however, in part due to the variability of the measurement data. In this paper, the spectral wave-energy transmission method, which employs the self-calibrating configuration, is proposed for crack-depth estimation in concrete structures. Results from an experimental study carried out on a concrete slab with varying crack (notch) depths are reported. The effectiveness of the proposed method is validated by comparing the conventional time-of-flight and cut-off frequency-based methods. The results show that spectral energy transmission has excellent potential as a practical and reliable inplace nondestructive method for in-place crack depth estimation in concrete structures.

Original languageEnglish (US)
Pages (from-to)510-516
Number of pages7
JournalACI Materials Journal
Issue number5
StatePublished - Sep 2008


  • Crack depth
  • Nondestructive testing
  • Spectral energy transmission
  • Stress waves

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science


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