Electrical impedance changes due to cracks in planar conductive structural elements-Reference-Cited by-同舟云学术

Electrical impedance changes due to cracks in planar conductive structural elements

Published:2015-07-28 Issue:5 Volume:14 Page:489-501
ISSN:1475-9217
Container-title:Structural Health Monitoring
language:en
Short-container-title:Structural Health Monitoring

Author:

Armstrong Terry W¹,Sevostianov Igor¹

Affiliation:

1. Department of Mechanical & Aerospace Engineering, New Mexico State University, Las Cruces, NM, USA

Abstract

Changes in electrical resistivity due to cracks can be used to predict deterioration of mechanical performance caused by accumulation and growth of microcracks in electrically conductive structural elements. In this article, we utilize high-frequency alternating current to improve sensitivity of measurements through skin depth effects. Models for crack-produced changes in high-frequency alternating current are examined, and a method is proposed to correlate changes in resistivity associated with a crack due to skin depth and reactance effects. Note that only resistive impedance is linked to changes in mechanical properties through cross-property connections.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Biophysics

Link

http://journals.sagepub.com/doi/pdf/10.1177/1475921715596221

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