New trends in non-destructive evaluation in relation to the smart materials concept

Abstract

Periodical maintenance NDE-based inspections are today of a general acceptance for almost all complex technological structures. Nevertheless, the idea that the integrated and continuous sensing techniques can optimize the operating conditions is now in progress. Different aspects of this evolution towards health monitoring are discussed in relation with the smart materials concept through a non-exhaustive review of some realizations or experiences essentially focused on the field of sensitive materials. Piezoelectric implant technique and in situ electric resistance measurements on carbon epoxy composites are presented with more details. Finally, by extension, it seems useful to introduce the adaptive materials-based new concept of 'health saving'.