Electromagnetic health monitoring system for composite materials

A model of electromagnetic behavior o f composite materials such as carbon epoxy or glass epoxy structures has been developed. Based on this model, an electromagnetic method to evaluate the electric conductivity and the electric polarization of this type of material, by measurement of magnetic and electric components of an incident electromagnetic field crossing through the material, has been also developed. A Health Monitoring System (HMS) derived from this technique is presented, which allows to detect and characterize a wide variety of defects inside composite structures. The HMS is constituted of emitting and receiving networks sensitive to magnetic or electric fields, integrated into the composite structure. This system delivers electric images in which the damages can be detected and localized. Various electric images obtained by each type of measurement (magnetic and electric) and related to structures including various damages such as impact delamination, fiber breaking, local burning and liquid ingress, are presented and compared to images resulting from classical ultrasonic NDE. The complementary of the present technique with acousto-ultrasonic technique based on Lamb waves propagation, and the interest of combining them in a unique integrated system is evoked

Photomécanique

Issu du Congrès Photomécanique 2004 (Jun. 2004, Albi, France)National audienc

Imagery and quantitative mapping of electromagnetic phenomena using infrared thermography

Communication to : 'Journees Maxwell', Bordeaux (France), May 10-12, 1993SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1993 n.73 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Permanent monitoring of damaging impacts by a piezoelectric sensor based integrated system

Communication to : Journees techniques GAMI-CETIM 'Les applications de la thermographie dans les industries mecaniques', Senlis (France), 22-23 juin 1999Available from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1999 n.212 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc

Health monitoring system for composite material using electromagnetic field measurement

Communication to : SPIE's 9th annual international symposium on smart structures and materials, San Diego (USA), March 17-21, 2002Available from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.2002 n.127 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc

A new concept for structural health monitoring applied to composite material Part.1 : theoretical considerations

Communication to : 1st European workshop on structural health monitoring, Cachan (France), July 10-12, 2002SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.2002 n.118 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

A new concept for structural health monitoring applied to composite material Part.II : experimental validation

Communication to : 1st European workshop on structural health monitoring, Cachan (France), July 10-12, 2002Available from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.2002 n.119 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc

Structural health monitoring for composite structures

Communication to : 15th Brazilian congress of mechanical engineering - Aguas de Lindoia, Sao Paulo (Bresil), 22-26 novembre 1999SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : 2001 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc