Inspection of concrete-metal rod interface using guided waves

Won Bae Na, Tribikram Kundu, Mohammad R. Ehsani

Research output: Contribution to journalArticlepeer-review


The feasibility of detecting interface degradation and separation of steel rebars in concrete beams using Lamb waves is investigated in this paper. It is shown that Lamb waves can easily detect these defects. A special coupler between the steel rebar and ultrasonic transducers has been used to launch non-axisymmetric guided waves in the steel rebar. This investigation shows that the Lamb wave inspection technique is an efficient and effective tool for health monitoring of reinforced concrete structures because the Lamb wave can propagate a long distance along the reinforcing steel bars embedded in concrete as the guided wave and is sensitive to the interface debonding between the steel rebar and concrete.

Original languageEnglish (US)
Pages (from-to)59-64
Number of pages6
JournalAmerican Society of Mechanical Engineers (Publication) NDE
StatePublished - 2000

ASJC Scopus subject areas

  • Mechanical Engineering


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