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Acoustic emission for diagnosing the incipient generation of flaws within solid materials, the natural environment, and manmade structures
by
G. Paparo
IDAC (CNR)
Coauthors: S. Guarniere, A. Bottari, A. Marino, A. Teramo (Di.C.T.A), G. P. Gregori (IDAC (CNR))
Acoustic emission (AE) is an effective diagnostic tool for monitoring the initial stages of the strain of solid materials, within natural environment and manmade structures. Independent of AE intensity and damping, the AE pace characterizes the space distribution of AE sources. It is possible to test the hypotheses dealing with the prime mechanisms that lead to micro-flaws. This can be detected by a non-destructive method, in terms of passive observation. The detected time scale is much shorter than every other micro-deformation monitoring. The frequency sequence of the observed AE bursts denotes a process of coalescence of lesser flaws into progressively larger ones. Applications deal with metal fatigue, concrete ageing, conservation of the cultural heritage, laboratory investigations on concrete specimens of different composition, evaluation of the seismic vulnerability of reinforced concrete, etc.
Date received: September 6, 2004
Copyright © 2004 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # caon-33.