Correlation analysis of 2D tomographic images for flaw detection in pavements

Kyle Hoegh, Lev Khazanovich

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Ultrasonic tomography is an emerging method of nondestructive concrete pavement diagnostics which can be used for improved quality assurance/quality control during concrete pavement construction and assist in rehabilitation decision making. Detection of flaws using ultrasonic tomography requires significant effort and user expertise. To address these limitations, a quantitative method for determining the presence of defects in concrete pavements was developed. The proposed method is an adaptation of the recently developed impact-echo signature analysis method (IESA), which is used for comparison of impact-echo signals. The proposed two-dimensional ultrasonic tomography signature analysis (2D-UTSA) method was used to compare two-dimensional B-scans obtained using a commercial test system in field trials at the Minnesota Rd. Research Facility and the Federal Aviation Administration's National Airport Pavement Test Facility. Analysis of the results showed that the 2D-UTSA method is capable of identifying subsurface defects.

Original languageEnglish (US)
Pages (from-to)247-255
Number of pages9
JournalJournal of Testing and Evaluation
Issue number2
StatePublished - Mar 2012


  • ASR
  • Airport pavement
  • Delamination
  • Deterioration
  • Diagnostics
  • Infrastructure
  • NDT


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