公开(公告)号：US20240328926A1

公开(公告)日：2024-10-03

申请号：US18191788

申请日：2023-03-28

Applicant: THE BOEING COMPANY

Inventor： Marc DUBOIS ,  Jill P. BINGHAM

IPC: G01N21/17

CPC classification number: G01N21/1702 ,  G01N2021/1706 ,  G01N2201/06113 ,  G01N2201/0636 ,  G01N2201/08 ,  G01N2201/10

Abstract: The present disclosure provides for a multiple channel laser ultrasonic system using a single detection laser and a single generation laser for inspecting internal structures. An example system includes a laser generator configured to emit generation laser light, a laser detector configured to emit detection laser light, and a scanning apparatus. The scanning apparatus is configured to receive the generation laser light and the detection laser light, direct the generation laser light and the detection laser light onto a surface of a structure via a plurality of laser ultrasonic channels, and collect reflections of the detection laser light from the surface of the structure via the plurality of laser ultrasonic channels. The system also includes a controller configured to characterize an internal feature of the structure based on the reflections.