This paper discusses various applications where the ultrasonic weld inspection is carried out in an automated manner. The highest throughput rates are required in pipe mills where the testing systems are part of the production line and should not limit the capacity of the mill. The systems often work in 3-shift operation with a rate of availability of more than 90%. Therefore, robust testing mechanics are combined with sophisticated multi-channel ultrasonic electronics which allow trouble-free operation in an industrial environment with many electro-acoustical noise sources (motors, transformers, welding equipment).
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