The majority of piping networks in processing plants, such as refineries, chemical plants, and electric power generation plants, are operated at elevated temperatures (≥ 250° F 121° C). Failure of these insulated high temperature pipelines generally causes a major disruption of plant operation. In addition to inspection during the regular plant shutdowns, the processing industries are looking for ways to inspect and/or 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. They are: (1) supporting the sensor functionality at high temperatures (2) ensuring the probe durability and (3) maintaining good coupling of the probe to the structure. In this work, results of the probe testing utilizing magnetostrictive transduction will be presented.
 Cawley, P., Cegla, F., Galvagni, A., “Guided waves for NDT and permanently-installed monitoring,” INSIGHT, 2012, Vol: 54, Pages: 594-601, ISSN: 1354-2575.
 Joseph L. Rose, 2002, "A Baseline and Vision of Ultrasonic Guided Wave Inspection Potential," Journal of Pressure Vessel Technology Vol. 124, PP.273-282.
 Mudge, P. J. "Field application of the Teletest long-range ultrasonic testing technique." Insight (2001).
 H. Kwun, S. Kim, and G. Light. "The Magnetostrictive Sensor Technology for Long Range Guided Wave Testing and Monitoring of Structures," Materials Evaluation, Vol. 61, No. 1, 2003.
 S. Vinogradov, C. Duffer, G. Light, “Magnetostrictive Sensing Probes for Guided Wave Testing of High Temperature Pipes,” in Materials Evaluation Vol. 72, No 6, June 2014, pp 803-811.
 Vinogradov, S., “Method and System for Generating and Receiving Torsional Guided waves in a Structure,” U.S. Patent 7,821,258, B2, October 26, 2010.
 S. Vinogradov, A. Cobb, and G. Light, “Magnetostrictive Transducers (MsT) Utilizing Reversed Wiedemann Effect”, 43rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Volume 36.
 A.J. Croxford, P.D. Wilcox, B. Drinkwater, G. Konstantinidis, “Strategies for guided-wave structural health monitoring,” Proceedings of the Royal Society, 463 (2087) (2007), pp. 2961–2981.
54 Page Views
0 PDF Downloads
0 Facebook Shares