US 9,811,900 B2
Automatic detection of defects in composite structures using NDT methods
Joseph W. Maresca, Jr., Sunnyvale, CA (US); Wilhelmina C. Leuschen, Kennewick, WA (US); and Marissa L. Ammer, Kennewick, WA (US)
Assigned to KURION, INC., Irvine, CA (US)
Filed by Kurion, Inc., Irvine, CA (US)
Filed on Jul. 18, 2016, as Appl. No. 15/213,135.
Application 15/213,135 is a continuation of application No. 13/631,795, filed on Sep. 28, 2012, granted, now 9,488,592.
Claims priority of provisional application 61/540,463, filed on Sep. 28, 2011.
Prior Publication US 2016/0328835 A1, Nov. 10, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 7/18 (2006.01); G06T 7/00 (2017.01); G01N 21/88 (2006.01); G06T 5/00 (2006.01); G06T 5/20 (2006.01); H04N 5/33 (2006.01); G01N 25/72 (2006.01); G01N 21/84 (2006.01)
CPC G06T 7/001 (2013.01) [G01N 21/8851 (2013.01); G01N 25/72 (2013.01); G06T 5/002 (2013.01); G06T 5/20 (2013.01); H04N 5/33 (2013.01); G01N 2021/8472 (2013.01); G06T 2207/10016 (2013.01); G06T 2207/10048 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for detection of defects, comprising:
positioning an infrared camera at a known distance from a structure;
positioning a heat source over an area of interest;
applying heat from the heat source onto the area of interest resulting in a change in temperature of the area of interest;
removing the heat source from the area of interest;
collecting a data set of infrared images from the area of interest heated by the heat source, including:
collecting a first set of the infrared images within a first time period after removing the heat from the area of interest;
collecting a second set of the infrared images within a second time period after removing the heat from the area of interest, wherein the second time period is after the first time period;
processing a data set including the first set of the infrared images and the second set of infrared images; and
identifying differences between the first set of infrared images and second set of infrared images wherein:
the differences represent a defect in the structure,
the defect in the structure is least one of a fluid ingress and disband, and
the defect in the structure is determined based on one or more of the second set of infrared images.