A dual-function inductive sensor for imaging steel, corrosion products and graphite based materials

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

  • Authors:
  • G. Miller
  • P. Gaydecki
  • M. Zaid
  • B. Fernandes
  • V. Torres


An inductive sensor is described that combines both Q-detection and heterodyne technology. By exploiting the change in amplitude and frequency of the received signals, it may be used for imaging steel reinforcement bars, surface corrosion and, generally, materials with different permeability and conductivity ratios. Real time digital signal processing is used to improve the signal to noise ratio of the sensor and to provide a feedback stabilization mechanism for the reduction of long-term drift.

Bibliographical metadata

Original languageEnglish
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation Volume 24
Number of pages8
Publication statusPublished - 9 Apr 2005
EventReview of Progress in Quantitative Nondestructive Evaluation - Golden, CO, United States
Event duration: 25 Jul 200430 Jul 2004


ConferenceReview of Progress in Quantitative Nondestructive Evaluation
CountryUnited States
CityGolden, CO