Invention Grant
- Patent Title: Systems and methods for automatic alignment and focusing of light in laser ultrasound testing
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Application No.: US16183229Application Date: 2018-11-07
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Publication No.: US11073500B2Publication Date: 2021-07-27
- Inventor: Jill P. Bingham , Gary E. Georgeson , William P. Motzer , Alan F. Stewart , Matthew O'Donnell , Ivan Pelivanov
- Applicant: The Boeing Company , University of Washington
- Applicant Address: US IL Chicago; US WA Seattle
- Assignee: The Boeing Company,University of Washington
- Current Assignee: The Boeing Company,University of Washington
- Current Assignee Address: US IL Chicago; US WA Seattle
- Agency: Walters & Wasylyna LLC
- Main IPC: G01N29/22
- IPC: G01N29/22 ; G01N29/24 ; G01N29/265 ; G01N21/17 ; G01N29/11

Abstract:
A method for testing a structure using laser ultrasound includes steps of: (1) directing positioning light on a surface of the structure; (2) determining a spatial location and a spatial orientation of the surface from an evaluation of the positioning light reflected back from the surface; (3) directing pump light onto the surface to generate ultrasonic waves in the structure; (4) selectively locating a probe-light focal point of probe light on the surface, based on the spatial location determined for the surface; (5) selectively angularly orienting the probe light normal to the surface, based on the spatial orientation determined for the surface; and (6) directing the probe light onto the surface to detect a response to the ultrasonic waves.
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