公开(公告)号：US20240264092A1

公开(公告)日：2024-08-08

申请号：US18105299

申请日：2023-02-03

申请人： RAYTHEON TECHNOLOGIES CORPORATION

发明人： Jeremiah C. Lee ,  Paul Attridge ,  Zaffir A. Chaudhry ,  Scott Goyette ,  Gregory S. Hagen ,  David L. Lincoln ,  Kin Gwn Lore

IPC分类号： G01N21/95 ,  G01N21/88 ,  G06F18/2135 ,  G06T7/00

CPC分类号： G01N21/9515 ,  G01N21/8851 ,  G06F18/2135 ,  G06T7/0004 ,  G01N2021/1765 ,  G01N2021/8861 ,  G01N2021/8887 ,  G06T2207/20081 ,  G06T2207/20084

摘要： Methods of inspecting fan blades of a gas turbine engine for abnormalities are disclosed. One method utilizes a neural network to determine whether a photographic image of at least one fan blade depicts an abnormality of the at least one fan blade. Another method uses a dimensional reduction technique on one or more first photographic images that depict at least one first fan blade to obtain basis vectors, utilizes the basis vectors to obtain a reconstructed version of a second photographic image that depicts at least one second fan blade, and determines whether the at least one second fan blade includes an abnormality based on a difference between the second photographic image and the reconstructed version of the second photographic image. Another method determines whether a fan blade includes an abnormality based on contrast differences between adjacent areas of an image.