Aerospatiale Societe Nationale Industrielle

Jean-Charles Anifrani

Christian Le Floc'h

Christian M Le Floc'H

Bernard Souillard

Didier Sornette

A process for the predictive determination in the pre-critical range of the load at rupture of a structure, comprising subjecting the structure to a stress of the same type as the load and for a time according to a predetermined law, whilst recording the acoustical activity generated by the resulting damage, until a predetermined stress threshold is reached. A correlation is maintained between the registered acoustic emission and the relation ##EQU1## in which: ##EQU2## is the variation of acoustic energy generated by the damage, t is time,

Process for the predictive determination in the precritical regime of

Method for predictive determination of load, simple or combined, at rupture, of a structure, which includes subjecting the structure to a stress which is equivalent to the load; recording acoustic activity generated by damages suffered in the structure, up until a pre-determined stress threshold; and determining the predictive value of the load at rupture using the recorded acoustic emission based on a relationship linking time to the load.

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Saint Medard en Jalles, France

Jean-Charles Anifrani