Evaluation of Magnetostrictive Transducers for Guided Wave Monitoring of Pressurized Pipe at 200?C

[+] Author and Article Information
Sergey Vinogradov

Southwest Research Institute, 6220 Culebra Road San Antonio, TX 78238

Thomas Eason

BP Products North America, 150 W. Warrenville Rd., Naperville, IL 60563

Mark Lozev

BP Products North America, 150 W. Warrenville Rd., Naperville, IL 60563

1Corresponding author.

ASME doi:10.1115/1.4038726 History: Received August 14, 2017; Revised December 06, 2017


Many piping networks in processing plants, such as refineries, chemical plants, and electric power generation plants, are operated at elevated temperatures (= 250°F or 121°C). Failure of these insulated high temperature pipes can cause a major disruption of plant operation. In addition to inspection during the regular plant shutdowns, processing industries are looking for ways to inspect and monitor these pipelines on-line to ensure safe operation of the plants.

Permanent monitoring of high temperature structures would require addressing the following technical problems: supporting the sensor functionality at high temperatures, ensuring the probe durability, and maintaining good coupling of the probe to the structure. In this work, a probe utilizing magnetostrictive transduction was tested on a mockup at 200°C and produced a steady high amplitude signal over a period of 270 days. Probe performance parameters such as signal to noise ratio, data reproducibility, and sensitivity to anomalies are discussed.

Copyright (c) 2017 by ASME
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