公开(公告)号：US20220018810A1

公开(公告)日：2022-01-20

申请号：US17365553

申请日：2021-07-01

Applicant: THE BOEING COMPANY

Inventor： Jill P. BINGHAM ,  Gary E. GEORGESON ,  Barry A. FETZER

IPC: G01N29/04 ,  G01N29/06

Abstract: The present disclosure provides for characterizing internal structures via ultrasound by inducing an ultrasonic test wave in a component; developing a test signature based on measured propagation of the ultrasonic test wave through the component; characterizing an internal feature of the component based a comparison between the test signature and a baseline signature for the component; and providing an indication of the internal feature as characterized. In some aspects, the ultrasonic test wave is induced by a laser inducer and/or received by a laser interferometer. The test signature includes one or more of: frequency responses, amplitude responses, and times of flight. The test signature can be used to identify changes in a component over time, verify similarity between different components, monitor thermal processes, and verify an identify of a component.

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.