Estimation of general corrosion damage to steel reinforced mortar using frequency sweeps of guided mechanical waves

Benjamin L. Ervin, Jennifer T. Bernhard, Daniel A. Kuchma, Henrique Reis

Research output: Contribution to journalReview article

Abstract

A frequency sweep from 50 to 200 kHz of guided mechanical waves has been conducted to detect and assess general corrosion damage in steel reinforced mortar specimens with seeded defects and in specimens undergoing accelerated corrosion using impressed current. The sweep was conducted by primarily invoking the fundamental longitudinal mode of propagation, ie the L(0,1) mode. The change in waveform energy (indicative of attenuation) at different frequencies is presented and discussed in terms of general corrosion damage. The isolated effects of rebar surrounded by water and mortar are also discussed. Experimental results indicate that general corrosion damage can be detected and evaluated by invoking the fundamental longitudinal mode of propagation. Results are presented and discussed within the framework of a corrosion process degradation model and service life. A review and discussion of the corrosion process and service life analysis of reinforced concrete is also presented.

Original languageEnglish (US)
Pages (from-to)682-692
Number of pages11
JournalInsight: Non-Destructive Testing and Condition Monitoring
Volume48
Issue number11
DOIs
StatePublished - Nov 1 2006

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ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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