Performance Evaluation of CPCs Using Corrosion Sensors - Laboratory and Field Studies

Abstract

SUMMARY: (1) It was determined that impedance based coating degradation sensors can be successfully used to detect coating failure and assess the performance of CPCs in coastal environments. (2) Laboratory tests showed that the changes associated with coating failure are more pronounced at lower measurement frequencies. (3) The sensitivity of the sensor was found to be dependent on the performance of the CPC; better sensitivity was found in case of better performing CPCs. (4) The changes in impedance parameters measured during the wet part of the exposure cycle were found to correlate well with visual observations of surface corrosion. In some cases, recovery of the impedance values during the dry part of the cycle was observed.

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Document Details

Document Type
Technical Report
Publication Date
Feb 04, 2009
Accession Number
ADA508829

Entities

People

  • Marta A. Jakab

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Condition Based Maintenance
  • Corrosion
  • Corrosion Inhibition
  • Data Acquisition
  • Data Storage Systems
  • Data Transmission
  • Degradation
  • Detectors
  • Environment
  • Field Tests
  • Laboratory Tests
  • Networks
  • Phase
  • Sensor Networks
  • Test And Evaluation
  • Wireless Sensor Networks

Readers

  • Fluid Dynamics.
  • Materials Science and Engineering.