FIELD: physics.
SUBSTANCE: method involves emitting ultrasonic signals from the interior of the pipe towards its wall (1); receiving backscattered signals from the wall, multiple signals being emitted and received, having their main directions distributed within a plane (4) perpendicular to the pipe axis; processing the multiple emitted and received signals, using an imaging process based on transmission times between emission and reception of the emitted and backscattered signals.
EFFECT: improved inspection of the state of a pipe.
14 cl, 2 dwg
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