Detection of Bridge-Deck Delamination Using Full Ultrasonic Waveform Tomography

A two-dimensional (2D) time-domain waveform tomography technique is presented for detection of delamination in concrete bridge decks. Measured ultrasonic surface wave fields were inverted using a full waveform inversion (FWI) technique, based on a finite-difference solution of 2D elastic wave equations and Gauss–Newton inversion method. The FWI was applied to both synthetic and real experimental data sets. The real experimental data set was collected on a validation concrete slab using an ultrasonic shear-wave tomography system. The inversion results showed that the waveform analysis was able to delineate delamination zones, including a real delamination at a depth of 80 mm.

• Record URL:
  https://doi.org/10.1061/(ASCE)IS.1943-555X.0000323
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10760342
• Supplemental Notes:
  • © 2016 American Society of Civil Engineers.
• Authors:
  • Nguyen, Trung Dung
  • Tran, Khiem T
  • Gucunski, Nenad
• Publication Date: 2017-6

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 04016027
• Serial:
  • Journal of Infrastructure Systems
  • Volume: 23
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers
  • ISSN: 1076-0342
  • EISSN: 1943-555X
  • Serial URL: http://ascelibrary.org/journal/jitse4

Subject/Index Terms

• TRT Terms: Bridge decks; Delamination; Tomography; Ultrasonic detectors
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01605268
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Jul 12 2016 3:03PM