SYSTEMS AND METHODS FOR AUTOMATIC ALIGNMENT AND FOCUSING OF LIGHT IN LASER ULTRASOUND TESTING
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) direc...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
07.05.2020
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Subjects | |
Online Access | Get full text |
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Summary: | 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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Bibliography: | Application Number: US201816183229 |