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sigwinch28
2 days ago
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Spanish track was fractured before high-speed trai...
Measurement trains filled with cameras and LIDAR
For example, in the U.K.:
https://en.wikipedia.org/wiki/New_Measurement_Train
jen729w
2 days ago
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https://en.wikipedia.org/wiki/Doctor_Yellow
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user_7832
2 days ago
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LIDAR is good, but as another commenter pointed out, Ultrasonic Flaw Detection (USFD) is the gold standard for crack/flaw detection.
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For example, in the U.K.:
https://en.wikipedia.org/wiki/New_Measurement_Train