Monitoring uniform and localized corrosion in reinforced mortar using high-frequency guided longitudinal waves

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

Research output: Contribution to journalArticlepeer-review

Abstract

High-frequency guided longitudinal waves have been used in a through-transmission arrangement to monitor reinforced mortar specimens undergoing both accelerated uniform and localized corrosion. High-frequency guided longitudinal waves were chosen because they have the fastest propagation velocity and lowest theoretical attenuation for the rebar/mortar system. This makes the modes easily discernible and gives them the ability to travel over long distances. The energy of the high-frequency longitudinal waves is located primarily in the center of the rebar, leading to less leakage into the surrounding mortar. The results indicate that the guided mechanical waves are sensitive to both forms of corrosion attack in the form of attenuation, with less sensitivity at higher frequencies. Also promising is the ability to discern uniform corrosion from localized corrosion in a through-transmission arrangement by examination of the frequency domain.

Original languageEnglish (US)
Article number69321F
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6932
DOIs
StatePublished - Jun 2 2008

Keywords

  • Corrosion durability
  • Guided waves
  • Reinforced concrete
  • Reinforced mortar

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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