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The research process and methodology of the ultrasonic examination by the University of Michigan researcher Dr Floyd Firestone in 1940, was patented the first practical ultrasonic test, with the theme "Defect Check and Detectors". In fact, the applications of welding defects ultrasound inspection are the oldest and most commonly used inspection techniques.

The research process and methodology of the ultrasonic examination by the University of Michigan researcher Dr Floyd Firestone in 1940, was patented the first practical ultrasonic test, with the theme "Defect Check and Detectors". In fact, the applications of welding defects ultrasound inspection are the oldest and most commonly used inspection techniques.

The research process and methodology of the ultrasonic examination by the University of Michigan researcher Dr Floyd Firestone in 1940, was patented the first practical ultrasonic test, with the theme "Defect Check and Detectors". In fact, the applications of welding defects ultrasound inspection are the oldest and most commonly used inspection techniques.

The research process and methodology of the ultrasonic examination by the University of Michigan researcher Dr Floyd Firestone in 1940, was patented the first practical ultrasonic test, with the theme "Defect Check and Detectors". In fact, the applications of welding defects ultrasound inspection are the oldest and most commonly used inspection techniques.