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

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

Research output: Contribution to journalConference articlepeer-review


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
StatePublished - 2008
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008 - San Diego, CA, United States
Duration: Mar 10 2008Mar 13 2008


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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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