Monitoring localized corrosion in reinforced mortar using guided mechanical waves

B. L. Ervin, Jennifer Truman Bernhard, D. A. Kuchma, Henrique M Reis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Guided ultrasonic waves were used to monitor reinforced mortar specimens undergoing accelerated localized corrosion. Longitudinal waves were invoked at higher frequencies (2.5-8.5 MHz) where the attenuation is a local minimum. Using a through transmission configuration, collected waveforms showed an increase in attenuation with increased corrosion damage accumulation. Because the induced localized corrosion did not yield a discontinuity nearly perpendicular to the bar axis, the observed increase in attenuation is mainly due to severe scattering of the incident waves, mode conversions, and reflections at the severely tapered cross-section. As evidence of this phenomenon was the inability of pulse-echo testing to detect reflected waveforms for the induced localized corrosion (i.e., severely tapered cross-section) via accelerated corrosion.

Original languageEnglish (US)
Title of host publicationStructural Health Monitoring 2007
Subtitle of host publicationQuantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
EditorsFu-Kuo Chang
PublisherDEStech Publications
Pages516-523
Number of pages8
ISBN (Electronic)9781932078718
StatePublished - Jan 1 2007
Event6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007 - Stanford, United States
Duration: Sep 11 2007Sep 13 2007

Publication series

NameStructural Health Monitoring 2007: Quantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
Volume1

Other

Other6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007
CountryUnited States
CityStanford
Period9/11/079/13/07

ASJC Scopus subject areas

  • Computer Science Applications
  • Health Information Management

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