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:
Aug. 02, 2005
Filed:
Jul. 11, 2002
Pascal Dublineau, Saulveur de Landermont, FR;
Michel Buge, Saint Sebastien sur Loire, FR;
Alain Porte, Colomiers, FR;
Pascal Dublineau, Saulveur de Landermont, FR;
Michel Buge, Saint Sebastien sur Loire, FR;
Alain Porte, Colomiers, FR;
Airbus France, Toulouse Cedex, FR;
Abstract
A process is described for the production of holes, particularly of micro-perforations, in a composite material, constituted by fibers embedded in a resinous matrix, characterized in that it consists in a preliminary step of carrying out on a specimen of the composite material, with the help of a laser beam, tests consisting in adjusting the duration of illumination at a predetermined place on the specimen, as well as the focusing and power of said laser beam, so as to confine the temperature in the mass of the material to a range of temperatures both greater than the thermal decomposition temperature of the matrix resin and below the temperature of altering the physical properties of the fibers, so as to carry out the elimination of the resin without affecting the physical integrity of the fibers, then in reproducing on the material () to be treated, at each position of a perforation to be made, the operating conditions of the laser () so as to constitute in said material a through passage, as a result of only the local burning of the resin of the matrix of the composite material.