Patent ID: 9182218
Filing Date: 2015-11-10
Classification: G01B,G01N

Abstract:
1. A method for automatically detecting and characterizing a resin flash on a surface of a composite part comprising a matrix formed from a transparent or scattering resin and a fibrous reinforcement, the method comprising: a) obtaining a geometric definition of a zone of a part to be tested; b) obtaining a file, referred to as a criteria file, comprising values of resin thickness tolerances corresponding to the zone to be tested; c) illuminating a portion, referred to as a measurement point, of the surface of the zone to be tested using a laser source having a low temporal coherence; d) measuring a resin thickness at the measuring point using an optical coherence tomography approach; e) recording the resin thickness measured in step d) and spatial coordinates of the measurement point; f) moving the laser source to another measurement point and repeating steps c) to f) so as to carry out a scan until the zone to be tested has been entirely covered; and g) comparing a resin thickness variation profile of the zone to be tested with the criteria file.