Ultrasonic guided waves for steel bar concrete interface testing

Won Bae Na, Tribikram Kundu, Mohammad R. Ehsani

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

The feasibility of detecting and quantifying delamination at the interface between steel bar and concrete using ultrasonic guided waves is investigated in this paper. These waves can propagate a long distance along the reinforcing steel bar or concrete beam as guided waves and are sensitive to the interface bonding condition between the steel bar and concrete. The traditional ultrasonic methods are good for detecting large voids in concrete but not very efficient for detecting delamination at the interface between concrete and steel bar since they use reflection, transmission and scattering of longitudinal waves by internal discontinuities. In this study, special solid couplers between the steel bar (or concrete beam) and ultrasonic transducers have been used to launch flexural cylindrical guided waves (or lamb waves) in the steel bar (or concrete). This investigation shows that the guided wave testing technique is an efficient and effective tool for health monitoring of reinforced concrete structures.

Original languageEnglish (US)
Pages (from-to)437-444
Number of pages8
JournalMaterials Evaluation
Volume60
Issue number3
StatePublished - 2002

Fingerprint

Guided electromagnetic wave propagation
Steel
Ultrasonic waves
Concretes
Testing
Delamination
Ultrasonic transducers
Wave transmission
Concrete construction
Surface waves
Reinforced concrete
Ultrasonics
Health
Scattering
Monitoring

Keywords

  • Cylindrical guided waves
  • Delamination
  • Lamb waves
  • Nondestructive testing
  • Reinforced concrete
  • Steel bar
  • Ultrasonic waves

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

Cite this

Ultrasonic guided waves for steel bar concrete interface testing. / Na, Won Bae; Kundu, Tribikram; Ehsani, Mohammad R.

In: Materials Evaluation, Vol. 60, No. 3, 2002, p. 437-444.

Research output: Contribution to journalArticle

Na, Won Bae ; Kundu, Tribikram ; Ehsani, Mohammad R. / Ultrasonic guided waves for steel bar concrete interface testing. In: Materials Evaluation. 2002 ; Vol. 60, No. 3. pp. 437-444.
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