The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 1999
Filed:
Apr. 02, 1998
Applicant:
Inventors:
Jean-Charles Anifrani, Saint Medard en Jalles, FR;
Christian Le Floc'h, Blanquefort, FR;
Assignee:
Aerospatiale Societe Nationale Industrielle, Paris Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73587 ; 73801 ;
Abstract
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,