Sensor positioning with non-dispersive guided waves for pipeline corrosion monitoring

摘要

An ultrasonic sensor assembly for testing a pipe includes a first and second transducer rings attached to the pipe and spaced apart along a length of the pipe. The first transducer ring includes a plurality of transmitters for transmitting a wave, such as a non-dispersive guided wave. The first transducer ring transmits the wave along the pipe. The second transducer ring includes a plurality of receivers for receiving the wave. A relative position of the first transducer ring with respect to a circumferential position of the second transducer ring is determined based on characteristics of the wave received by the second transducer ring. A method of positioning the ultrasonic sensor assembly on the pipe is also provided.

主权项

1. An ultrasonic sensor assembly for testing a pipe, the ultrasonic sensor assembly including:
a first transducer ring attached to the pipe and operatively configured to transmit a wave along the pipe; a second transducer ring attached to the pipe and spaced from the first transducer ring along a length of the pipe and operatively configured to receive the wave transmitted from the first transducer and operatively configured to output a signal indicative of characteristics of the wave from the first transducer ring received by the second transducer ring, the second transducer ring being at a circumferential position relative to a circumferential position of the first transducer ring; and a controller operatively connected to the first transducer ring and the second transducer ring and being operatively configured to control the first transducer ring to transmit the wave along the pipe and operatively configured to process the signal from the second transducer ring including determining the relative circumferential position of the first transducer ring with respect to the circumferential position of the second transducer ring, which is a measure of offset circumferential distance of the second transducer ring from longitudinal alignment with the first transducer ring, based on the characteristics of the wave from the first transducer ring received by the second transducer ring.