Ultrasonic transducer arrangement

摘要

An ultrasonic transducer arrangement for inspecting a pipe to fitting weld with restricted scanning access. A TOFD ultrasonic send transducer is mounted adjacent one end of a frame. A TOFD ultrasonic receive transducer is mounted on the frame and spaced linearly apart from and aligned with the TOFD send transducer. The TOFD send and receive transducers are each positioned at an angle that matches the external radius of curvature of the pipe. A phased array curved, wedge, send/receive transducer is mounted on the frame and spaced radially apart from the TOFD transducers.

主权项

1. An ultrasonic transducer arrangement for inspecting a pipe to fitting weld where scanning is restricted on the fitting side, comprising:
a. a frame; b. a first transducer being a phased array curved wedge ultrasonic, send/receive transducer mounted on the frame; c. a second transducer being an ultrasonic, send transducer mounted adjacent one end of the frame and spaced linearly and radially apart from the phased array wedge transducer; and d. a third transducer being an ultrasonic, receive transducer mounted on the frame spaced linearly apart from and aligned with the send transducer to receive signals from the send transducer, the third transducer being wedge shaped and having a narrow end and a wide end opposite the narrow end, wherein the narrow end of the third transducer is angled toward the second transducer.