Electromagnetic localization of defects in carbon epoxy composite materials

Michel B. Lemistre; Remi Gouyon; Daniel L. Balageas

doi:10.1117/12.302540

15 March 1998 Electromagnetic localization of defects in carbon epoxy composite materials

Michel B. Lemistre, Remi Gouyon, Daniel L. Balageas

Proceedings Volume 3399, Process Control and Sensors for Manufacturing; (1998) https://doi.org/10.1117/12.302540
Event: Non-Destructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1998, San Antonio, TX, United States

Abstract

When an imperfectly conductive structure is illuminated by an electromagnetic wave, its response, on the magnetic component, is comparable to a first order integrator, if the skin effect is negligible at the wave frequency. Using this model, we have developed a method and a magnetic prove allowing to build 'electric images' of the defects present in carbon epoxy composite materials, by measurement of magnetic field transmission in these materials. After a presentation of the theory of electromagnetic scattering in a non perfectly conductive materials from M.A. Bethe and K.F. Casey, we demonstrate that it is not necessary to perform the magnetic field attenuation measurement by transmission; we can proceed on one face of the sample, by reflection, obtaining the same result. We present the experimental set up and the magnetic probe developed, we show several images achieved on samples having induced defects and we compare these image with the images achieved by a classical ultrasonic method on the same specimens. Furthermore we present images produced by integration in a structure of a 'sensor-network' based on the principle used by the probe.

Citation Download Citation

Michel B. Lemistre, Remi Gouyon, and Daniel L. Balageas "Electromagnetic localization of defects in carbon epoxy composite materials", Proc. SPIE 3399, Process Control and Sensors for Manufacturing, (15 March 1998); https://doi.org/10.1117/12.302540

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available