pages
202
ISBN
9781786300195

One of the issues in structural health control is the early detection of damage before it leads to ruin. In this context, acoustic emission is a technique well adapted to monitoring, in real time, the health of a structure or the materials that constitute it. Indeed, the mechanisms of damage are accompanied by energy release […]

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One of the issues in structural health control is the early detection of damage before it leads to ruin. In this context, acoustic emission is a technique well adapted to monitoring, in real time, the health of a structure or the materials that constitute it. Indeed, the mechanisms of damage are accompanied by energy release in the form of acoustic waves. Sensors on the surface of laboratory structures or specimens record AE signals.

This book begins with a description of acoustic emission and its main characteristics, and part of the book is dedicated to the identification of the acoustic signature of the different damage mechanisms occurring in organic matrix composite materials (OMC), as well as in ceramic matrix composite materials (CMC). The authors present not only the contributions of this approach, but also the main difficulties and limitations. Finally, life expectancy forecasts using AE for long-term tests are discussed.

1. Acoustic Emission: Definition and Overview.
2. Identification of the Acoustic Signature of Damage Mechanisms.
3. Lifetime Estimation.

Nathalie Godin

Nathalie Godin est maître de conférences à l’INSA de Lyon. Elle a plus de 20 ans d’expérience dans le domaine de l’émission acoustique et de l’étude des mécanismes d’endommagement des matériaux composites.

Pascal Reynaud

Pascal Reynaud est chargé de recherche CNRS à l’INSA de Lyon depuis 1992. Ses travaux portent principalement sur le comportement et l’endommagement des composites à matrice céramique.

Gilbert Fantozzi

Gilbert Fantozzi est professeur émérite à l’INSA de Lyon. Il est spécialiste dans le domaine de l’élaboration des matériaux céramiques, ainsi que du comportement thermomécanique et des relations microstructure-propriétés des céramiques.