×

Methods and systems for inspection of composite irregularities

  • US 9,595,092 B2
  • Filed: 05/10/2013
  • Issued: 03/14/2017
  • Est. Priority Date: 05/10/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method of inspecting a composite structure, said method comprising:

  • acquiring an ultrasound B-scan cross-sectional image of a depth of the composite structure, wherein the depth of the composite structure is defined by at least a first ply and a second ply laid up on the first ply, the cross-sectional ultrasound B-scan image representing intensity information of a plurality of A-scan ultrasound waves plotted in grayscale;

    transforming the acquired ultrasound B-scan cross-sectional image into a binary image;

    determining a first boundary line between the first ply and the second ply based at least partially on a position of each of a plurality of data points plotted in the binary image;

    calculating a vertical height as a difference between a minimum vertical location and a maximum vertical location of the first boundary line determined in the binary image;

    characterizing, based on the binary image, presence of a wrinkle and associated wrinkle height relative to the depth of the composite structure acquired from the binary image of the ultrasound B-scan cross-sectional image, wherein the wrinkle is characterized when the calculated vertical height of the first boundary line determined in the binary image is greater than a predetermined threshold; and

    displaying a virtual representation of the characterized wrinkle on the acquired binary image of the ultrasound B-scan cross-sectional image.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×